Calculating Weight Watchers Daily Smartpoints

Weight Watchers Daily SmartPoints Calculator :root { –primary-color: #004a99; –success-color: #28a745; –background-color: #f8f9fa; –text-color: #333; –input-border-color: #ccc; –card-background: #fff; –shadow: 0 2px 5px rgba(0,0,0,0.1); } body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background-color: var(–background-color); color: var(–text-color); line-height: 1.6; margin: 0; padding: 0; } .container { max-width: 1000px; margin: 20px auto; padding: 20px; background-color: var(–card-background); border-radius: 8px; box-shadow: var(–shadow); } h1, h2, h3 { color: var(–primary-color); text-align: center; margin-bottom: 20px; } h1 { font-size: 2.5em; } h2 { font-size: 1.8em; margin-top: 30px; border-bottom: 2px solid var(–primary-color); padding-bottom: 10px; } h3 { font-size: 1.4em; margin-top: 25px; } .calculator-wrapper { background-color: var(–card-background); padding: 30px; border-radius: 8px; box-shadow: var(–shadow); margin-bottom: 40px; } .input-group { margin-bottom: 20px; display: flex; flex-direction: column; align-items: stretch; } .input-group label { display: block; margin-bottom: 8px; font-weight: bold; color: var(–primary-color); } .input-group input[type="number"], .input-group select { width: 100%; padding: 12px; border: 1px solid var(–input-border-color); border-radius: 4px; box-sizing: border-box; font-size: 1em; } .input-group input[type="number"]:focus, .input-group select:focus { border-color: var(–primary-color); outline: none; box-shadow: 0 0 0 3px rgba(0, 74, 153, 0.2); } .helper-text { font-size: 0.85em; color: #666; margin-top: 5px; } .error-message { color: #dc3545; font-size: 0.85em; margin-top: 5px; height: 1.2em; } .button-group { display: flex; justify-content: space-between; margin-top: 25px; gap: 10px; } .button-group button { flex: 1; padding: 12px 20px; border: none; border-radius: 5px; cursor: pointer; font-size: 1.1em; font-weight: bold; transition: background-color 0.3s ease; } .btn-calculate { background-color: var(–primary-color); color: white; } .btn-calculate:hover { background-color: #003366; } .btn-reset { background-color: #6c757d; color: white; } .btn-reset:hover { background-color: #5a6268; } .btn-copy { background-color: var(–success-color); color: white; margin-top: 10px; } .btn-copy:hover { background-color: #218838; } .results-wrapper { margin-top: 30px; padding: 25px; background-color: #e9ecef; border-radius: 8px; box-shadow: inset 0 1px 3px rgba(0,0,0,0.05); } .results-wrapper h3 { margin-top: 0; color: var(–primary-color); } .primary-result { font-size: 2.2em; font-weight: bold; color: var(–success-color); text-align: center; margin: 10px 0 20px 0; background-color: #d4edda; padding: 15px; border-radius: 5px; border: 1px solid var(–success-color); } .intermediate-results div { display: flex; justify-content: space-between; margin-bottom: 10px; font-size: 1.1em; } .intermediate-results span:first-child { font-weight: bold; } .formula-explanation { font-size: 0.95em; color: #555; margin-top: 15px; border-top: 1px dashed #ccc; padding-top: 15px; } table { width: 100%; border-collapse: collapse; margin-top: 25px; box-shadow: var(–shadow); } thead { background-color: var(–primary-color); color: white; } th, td { padding: 12px 15px; text-align: left; border: 1px solid #ddd; } tbody tr:nth-child(even) { background-color: #f2f2f2; } caption { font-size: 1.1em; font-weight: bold; color: var(–primary-color); margin-bottom: 10px; text-align: left; } canvas { display: block; margin: 25px auto 0 auto; max-width: 100%; background-color: var(–card-background); border-radius: 8px; box-shadow: var(–shadow); } .chart-label { text-align: center; font-size: 0.9em; color: #666; margin-top: 10px; } .article-content { margin-top: 40px; background-color: var(–card-background); padding: 30px; border-radius: 8px; box-shadow: var(–shadow); } .article-content h2 { text-align: left; margin-top: 0; } .article-content p, .article-content ul, .article-content ol { margin-bottom: 20px; font-size: 1.1em; } .article-content ul, .article-content ol { padding-left: 25px; } .article-content li { margin-bottom: 10px; } .article-content strong { color: var(–primary-color); } .article-content a { color: var(–primary-color); text-decoration: none; font-weight: bold; } .article-content a:hover { text-decoration: underline; } .faq-section h3 { text-align: left; cursor: pointer; margin-bottom: 10px; font-size: 1.3em; } .faq-section p { display: none; margin-left: 20px; font-style: italic; color: #555; } .faq-section .active { display: block; } .related-links ul { list-style: none; padding: 0; } .related-links li { margin-bottom: 15px; } .related-links a { font-weight: bold; } .related-links span { font-size: 0.9em; color: #666; display: block; margin-top: 5px; }

Weight Watchers Daily SmartPoints Calculator

Easily calculate your personalized daily SmartPoints allowance.

Your Daily SmartPoints

Enter your current weight in kilograms.
Enter your height in centimeters.
Enter your age in years.
Female Male
Select your gender.
Sedentary (little to no exercise) Lightly Active (light exercise/sports 1-3 days/week) Moderately Active (moderate exercise/sports 3-5 days/week) Very Active (hard exercise/sports 6-7 days/week) Extra Active (very hard exercise/sports & physical job)
Choose the option that best describes your lifestyle.

Your SmartPoints Calculation Results

Basal Metabolic Rate (BMR):
Total Daily Energy Expenditure (TDEE):
Points Adjustment:
Formula Used: Your Daily SmartPoints are calculated based on your Basal Metabolic Rate (BMR) and activity level. BMR is the energy your body burns at rest. TDEE (Total Daily Energy Expenditure) is your BMR multiplied by an activity factor. Your SmartPoints allowance is then derived from your TDEE, aiming for a calorie deficit for weight loss while ensuring adequate nutrition. The exact Weight Watchers algorithm is proprietary, but this calculator uses a standard BMR formula (Mifflin-St Jeor) and a TDEE multiplier, then estimates a reasonable points value.

Calculation Components Table

Component Value Unit
Weight kg
Height cm
Age years
Gender
Activity Level
Basal Metabolic Rate (BMR) kcal/day
Total Daily Energy Expenditure (TDEE) kcal/day
Estimated Daily SmartPoints points
Points Adjustment (for deficit) points

SmartPoints vs. Energy Expenditure

Comparison of estimated Daily SmartPoints and TDEE across different activity levels.

What is Calculating Weight Watchers Daily SmartPoints?

Calculating Weight Watchers Daily SmartPoints refers to the process of determining your personalized daily point allowance within the Weight Watchers (now WW) program. WW uses a points system designed to guide members towards healthier food choices by assigning a point value to foods based on their nutritional content, primarily focusing on calories, saturated fat, sugar, and protein. The Daily SmartPoints allowance is the target number of points you should aim to consume each day to achieve your weight loss goals. It's not a rigid diet but a flexible framework that encourages mindful eating and sustainable weight management.

Who should use it? Anyone enrolled in a WW program that utilizes the SmartPoints system should be interested in calculating their Daily SmartPoints. This includes individuals looking to lose weight, maintain their current weight, or simply adopt healthier eating habits. Understanding your daily allowance empowers you to make informed food choices, plan meals effectively, and stay within your personalized budget for balanced nutrition and successful progress toward your wellness objectives.

Common misconceptions: A frequent misconception is that SmartPoints are solely based on calories. While calories are a significant factor, the algorithm also accounts for saturated fat, sugar, and protein, aiming to nudge users towards foods that are more nutrient-dense and less processed. Another myth is that all 'healthy' foods have zero points; in reality, even fruits and vegetables, while often low in points and high in nutrients, contribute to your daily allowance, encouraging portion control and a balanced intake.

Weight Watchers Daily SmartPoints Formula and Mathematical Explanation

The precise algorithm used by WW for calculating Daily SmartPoints is proprietary and can evolve. However, the core principles are based on established metabolic formulas and nutritional science. A common approach for estimating daily energy needs, which forms the basis for point calculations, involves determining your Basal Metabolic Rate (BMR) and then factoring in your activity level to estimate your Total Daily Energy Expenditure (TDEE). Your Daily SmartPoints allowance is then derived from your TDEE, typically aiming for a slight calorie deficit to promote weight loss.

A widely accepted formula for BMR is the Mifflin-St Jeor equation:

  • For men: BMR = (10 × weight in kg) + (6.25 × height in cm) – (5 × age in years) + 5
  • For women: BMR = (10 × weight in kg) + (6.25 × height in cm) – (5 × age in years) – 161

Once BMR is calculated, TDEE is estimated by multiplying BMR by an activity factor:

  • Sedentary: BMR × 1.2
  • Lightly Active: BMR × 1.375
  • Moderately Active: BMR × 1.55
  • Very Active: BMR × 1.725
  • Extra Active: BMR × 1.9

WW then translates this estimated energy need (and a target deficit) into SmartPoints. Foods are assigned points based on:

  • Calories: Higher calories generally mean higher points.
  • Saturated Fat: Higher saturated fat content increases points.
  • Sugar: Added sugars contribute to higher points.
  • Protein: Higher protein content decreases points (as it promotes satiety).

The specific weighting of these factors is what WW keeps confidential. Our calculator provides an *estimate* of Daily SmartPoints by using the TDEE and then applying a typical conversion factor that aligns with WW's philosophy of prioritizing nutrient-dense foods. It also includes a 'Points Adjustment' which can be thought of as representing the points allocated for a daily deficit, encouraging weight loss.

Variables Table for SmartPoints Calculation

Variable Meaning Unit Typical Range
Weight Body mass kg 30 – 300+
Height Body height cm 100 – 220+
Age User's age years 10 – 100+
Gender Biological sex Category Male, Female
Activity Level Frequency and intensity of physical activity Category Sedentary to Extra Active
BMR Energy burned at rest kcal/day 800 – 2500+
TDEE Total daily energy burned kcal/day 1200 – 4000+
Daily SmartPoints Target daily point allowance points 15 – 70+
Points Adjustment Points allocated for calorie deficit/deficit reduction points -10 to +10 (approx)

Practical Examples (Real-World Use Cases)

Example 1: Sarah, aiming for weight loss

Inputs:

  • Weight: 80 kg
  • Height: 165 cm
  • Age: 42 years
  • Gender: Female
  • Activity Level: Moderately Active

Calculation Steps (Illustrative):

  1. BMR Calculation (Women): BMR = (10 * 80) + (6.25 * 165) – (5 * 42) – 161 = 800 + 1031.25 – 210 – 161 = 1460.25 kcal/day
  2. TDEE Calculation: TDEE = 1460.25 * 1.55 (Moderately Active) = 2263.39 kcal/day
  3. Estimated Daily SmartPoints: Based on TDEE and WW's conversion factors, this might translate to an estimated daily allowance of around 30 points. (WW's proprietary formula determines the exact value).
  4. Points Adjustment: An adjustment of -3 points might be applied to encourage a deficit.

Outputs:

  • Estimated Daily SmartPoints: ~30 points
  • BMR: ~1460 kcal/day
  • TDEE: ~2263 kcal/day
  • Points Adjustment: -3 points

Interpretation: Sarah has a moderate energy expenditure. Her estimated daily SmartPoints of 30 allows her a reasonable budget to consume nutritious foods while facilitating weight loss. The negative adjustment further supports her goal by slightly reducing her intake.

Example 2: David, maintaining weight

Inputs:

  • Weight: 95 kg
  • Height: 185 cm
  • Age: 50 years
  • Gender: Male
  • Activity Level: Lightly Active

Calculation Steps (Illustrative):

  1. BMR Calculation (Men): BMR = (10 * 95) + (6.25 * 185) – (5 * 50) + 5 = 950 + 1156.25 – 250 + 5 = 1861.25 kcal/day
  2. TDEE Calculation: TDEE = 1861.25 * 1.375 (Lightly Active) = 2559.70 kcal/day
  3. Estimated Daily SmartPoints: For maintenance, the points allowance would align closely with TDEE. This might translate to an estimated daily allowance of around 45 points.
  4. Points Adjustment: A neutral or slightly positive adjustment (e.g., +0 points) would be used for maintenance.

Outputs:

  • Estimated Daily SmartPoints: ~45 points
  • BMR: ~1861 kcal/day
  • TDEE: ~2560 kcal/day
  • Points Adjustment: 0 points

Interpretation: David requires more energy daily due to his weight and height. His estimated daily SmartPoints of 45 are intended to match his TDEE, helping him maintain his current weight. This shows how different demographics and lifestyles result in varied point allowances.

How to Use This Weight Watchers Daily SmartPoints Calculator

Using this calculator is straightforward and designed to provide quick insights into your personalized WW SmartPoints allowance. Follow these simple steps:

  1. Enter Your Details: In the provided fields, input your current weight in kilograms (kg), your height in centimeters (cm), your age in years, and select your gender.
  2. Select Activity Level: Choose the option that best describes your typical physical activity routine from the dropdown menu. Be honest to get the most accurate estimate.
  3. Calculate: Click the "Calculate Daily SmartPoints" button.
  4. Review Results: The calculator will display your estimated Daily SmartPoints allowance, along with your calculated Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE). An estimated Points Adjustment, often reflecting a deficit for weight loss, will also be shown.
  5. Understand the Formula: Read the "Formula Used" section for a plain-language explanation of how these numbers are derived. Remember that WW's exact formula is proprietary, so these are estimates.
  6. Use the Table and Chart: Refer to the table for a detailed breakdown of your input data and calculated values. The chart visually compares energy expenditure across different activity levels, offering context.
  7. Copy Results: If you wish to save or share your calculated results, click the "Copy Results" button.
  8. Reset: To start over with new information, click the "Reset" button to clear all fields.

How to read results: Your primary result is the estimated Daily SmartPoints. This is your target for daily consumption. The BMR and TDEE values provide context about your body's energy needs. The Points Adjustment gives an idea of how the WW system might modify your base allowance to encourage weight loss or support maintenance.

Decision-making guidance: Use your estimated Daily SmartPoints as a guide. If your goal is weight loss, aim to stay within this budget. If you are maintaining, this number should roughly align with your TDEE. Remember that WW also provides weekly Points for flexibility. This calculator is a tool to supplement, not replace, the official WW program guidance.

Key Factors That Affect Weight Watchers Daily SmartPoints Results

Several factors influence your calculated Daily SmartPoints, moving beyond simple calorie counting to a more holistic view of nutrition and energy balance:

  1. Weight: Heavier individuals generally have a higher BMR and TDEE because their bodies require more energy to function. This usually translates to a higher potential SmartPoints allowance.
  2. Height: Taller individuals, particularly those with a larger frame, tend to have a higher BMR and TDEE, influencing their points.
  3. Age: Metabolism tends to slow down with age. As BMR decreases, the resulting TDEE and consequently the potential SmartPoints allowance may also decrease.
  4. Gender: Men typically have more muscle mass than women, leading to a higher BMR and TDEE, often resulting in a higher points allowance.
  5. Activity Level: This is a major determinant. The more physically active you are, the higher your TDEE, and the higher your estimated Daily SmartPoints will be to support that energy expenditure.
  6. Weight Loss Goals: The WW program adjusts the baseline TDEE calculation to create a calorie deficit for weight loss. This is often reflected in a specific "Points Adjustment" or a reduced daily point target compared to maintenance TDEE calculations.
  7. Metabolic Rate Variations: While formulas provide estimates, individual metabolic rates can vary due to genetics, muscle mass, and hormonal factors. WW's proprietary system aims to account for these nuances more precisely than a generic calculator.
  8. Nutrient Composition of Food: As mentioned, WW's SmartPoints algorithm directly factors in protein (which lowers points) and saturated fat/sugar (which raise points), encouraging healthier food choices beyond just calorie content.

Frequently Asked Questions (FAQ)

What is the difference between SmartPoints and older WW points systems?

SmartPoints is an evolution of WW's previous points systems. It places a greater emphasis on satiety and nutritional value by incorporating protein positively into the calculation, while still tracking calories, saturated fat, and sugar. Older systems might have focused more heavily on just calories and fat.

Why does my calculated SmartPoints differ from the WW app?

WW's exact algorithm is proprietary and may include additional factors or different weightings than standard BMR/TDEE calculations. Factors like the specific implementation of the calorie deficit, weekly points, and personalized adjustments can cause discrepancies. This calculator provides a strong estimate based on common methodologies.

Can I eat only zero-point foods?

While WW designates many fruits and vegetables as zero-point foods to encourage their consumption, relying solely on them isn't recommended for balanced nutrition or sustainable weight management. The system is designed for you to use your daily and weekly points budget across a variety of foods.

Does my metabolism change over time affecting my points?

Yes. As you age, your metabolism naturally tends to slow down, which can reduce your BMR and TDEE. This means your Daily SmartPoints allowance might decrease over time, even if your weight and activity level remain the same. Weight loss itself can also slightly lower your metabolism.

What if I exercise more on certain days?

WW accounts for this flexibility with "Points". You can use your weekly Points budget to cover extra servings or foods that might be higher in points on days you are more active or have higher energy needs.

How does Weight Watchers handle different food types?

SmartPoints are calculated for most foods. Lean proteins, vegetables, and fruits generally have lower point values, while processed foods, those high in sugar, and unhealthy fats have higher values. This encourages choosing nutrient-dense options.

Is the Points Adjustment always negative for weight loss?

Typically, yes. For weight loss, the goal is a calorie deficit, and the Points Adjustment often reflects points subtracted to help achieve this. For weight maintenance, the adjustment would be neutral (zero), and for weight gain, it could be positive.

Can this calculator be used for weight maintenance?

Yes, while the primary focus is often weight loss, by understanding your TDEE and the estimated points, you can adjust your approach. For maintenance, aim to consume points close to your TDEE value, potentially with a neutral Points Adjustment.

© 2023 Your Website Name. All rights reserved.

function validateInput(id, errorId, minValue, maxValue) { var input = document.getElementById(id); var errorElement = document.getElementById(errorId); var value = parseFloat(input.value); errorElement.innerText = "; // Clear previous error if (isNaN(value)) { errorElement.innerText = 'Please enter a valid number.'; return false; } if (value maxValue) { errorElement.innerText = 'Value cannot be greater than ' + maxValue + '.'; return false; } return true; } function getBMIMultiplier(gender) { if (gender === 'male') { return 5; } else { return -161; } } function getActivityFactor(level) { var factors = { 'sedentary': 1.2, 'lightly_active': 1.375, 'moderately_active': 1.55, 'very_active': 1.725, 'extra_active': 1.9 }; return factors[level] || 1.2; } var pointsPerCalorie = 0.035; // Approximate: WW uses a complex formula, this is an estimation heuristic var calorieDeficitPerDay = 500; // Standard for ~1lb/week loss, translates to ~3.5 points/day function calculateSmartPoints() { var validWeight = validateInput('weightKg', 'weightKgError', 1); var validHeight = validateInput('heightCm', 'heightCmError', 1); var validAge = validateInput('age', 'ageError', 1, 120); if (!validWeight || !validHeight || !validAge) { document.getElementById('results').style.display = 'none'; document.querySelector('.results-table-wrapper').style.display = 'none'; document.querySelector('.chart-wrapper').style.display = 'none'; return; } var weightKg = parseFloat(document.getElementById('weightKg').value); var heightCm = parseFloat(document.getElementById('heightCm').value); var age = parseInt(document.getElementById('age').value); var gender = document.getElementById('gender').value; var activityLevel = document.getElementById('activityLevel').value; // 1. Calculate BMR (Mifflin-St Jeor Equation) var bmr = 0; if (gender === 'male') { bmr = (10 * weightKg) + (6.25 * heightCm) – (5 * age) + 5; } else { bmr = (10 * weightKg) + (6.25 * heightCm) – (5 * age) – 161; } bmr = Math.round(bmr); // 2. Calculate TDEE var activityFactor = getActivityFactor(activityLevel); var tdee = bmr * activityFactor; tdee = Math.round(tdee); // 3. Estimate Daily SmartPoints // WW's algorithm is proprietary. This is an approximation based on TDEE. // A common heuristic is ~35-45 points for moderate activity maintenance. // We'll use a formula that scales with TDEE but caps/floors it. var estimatedPoints = Math.round(tdee * pointsPerCalorie); // Rough conversion // Adjustments for a more realistic range and WW philosophy if (gender === 'female') { estimatedPoints = Math.max(15, Math.min(40, estimatedPoints)); // Range for typical female WW user } else { estimatedPoints = Math.max(20, Math.min(50, estimatedPoints)); // Range for typical male WW user } // Further refinement based on specific activity levels if (activityLevel === 'sedentary') estimatedPoints = Math.max(15, Math.min(estimatedPoints – 5, estimatedPoints)); if (activityLevel === 'lightly_active') estimatedPoints = Math.max(18, Math.min(30, estimatedPoints)); if (activityLevel === 'moderately_active') estimatedPoints = Math.max(25, Math.min(40, estimatedPoints)); if (activityLevel === 'very_active') estimatedPoints = Math.max(30, Math.min(45, estimatedPoints)); if (activityLevel === 'extra_active') estimatedPoints = Math.max(35, Math.min(50, estimatedPoints)); // Ensure a minimum floor, e.g., 14 is often cited as a minimum estimatedPoints = Math.max(14, estimatedPoints); // 4. Calculate Points Adjustment (for deficit) // This represents points potentially subtracted for weight loss. // Calorie deficit of 500 kcal/day is roughly 3500 kcal/week. // WW often states ~1 point per 50 kcal deficit. So ~70 points/week. // Daily deficit adjustment ~ 70 points / 7 days = 10 points. // This is highly variable and depends on WW plan. Let's use a smaller, illustrative range. var pointsAdjustment = 0; // If TDEE is significantly above a maintenance point level, assume deficit goal if (tdee > (estimatedPoints * 7 / pointsPerCalorie / 7) && estimatedPoints > 20) { // If TDEE is much higher than target points suggest pointsAdjustment = -Math.round(calorieDeficitPerDay / 50); // Approx points for deficit pointsAdjustment = Math.max(-10, pointsAdjustment); // Cap the adjustment } else { pointsAdjustment = 0; // Maintenance or gain scenario } var dailySmartPoints = estimatedPoints + pointsAdjustment; dailySmartPoints = Math.max(14, dailySmartPoints); // Ensure minimum points // Display Results document.getElementById('primaryResult').innerText = dailySmartPoints + ' SmartPoints'; document.getElementById('bmrValue').innerText = bmr + ' kcal/day'; document.getElementById('tdeeValue').innerText = tdee + ' kcal/day'; document.getElementById('adjustmentValue').innerText = pointsAdjustment + ' points'; document.getElementById('results').style.display = 'block'; document.querySelector('.results-table-wrapper').style.display = 'block'; document.querySelector('.chart-wrapper').style.display = 'block'; // Populate Table document.getElementById('tableWeight').innerText = weightKg; document.getElementById('tableHeight').innerText = heightCm; document.getElementById('tableAge').innerText = age; document.getElementById('tableGender').innerText = gender === 'male' ? 'Male' : 'Female'; document.getElementById('tableActivity').innerText = document.getElementById('activityLevel').options[document.getElementById('activityLevel').selectedIndex].text; document.getElementById('tableBMR').innerText = bmr; document.getElementById('tableTDEE').innerText = tdee; document.getElementById('tableSmartPoints').innerText = dailySmartPoints; document.getElementById('tableAdjustment').innerText = pointsAdjustment; // Update Chart updateChart(activityLevel, dailySmartPoints, tdee); } function updateChart(currentActivityLevel, currentSmartPoints, currentTdee) { var ctx = document.getElementById('smartPointsChart').getContext('2d'); var activityLevels = ['sedentary', 'lightly_active', 'moderately_active', 'very_active', 'extra_active']; var tdees = []; var estimatedPointsForAllLevels = []; var baseWeight = parseFloat(document.getElementById('weightKg').value) || 75; var baseHeight = parseFloat(document.getElementById('heightCm').value) || 170; var baseAge = parseInt(document.getElementById('age').value) || 35; var baseGender = document.getElementById('gender').value || 'female'; // Calculate values for all activity levels activityLevels.forEach(function(level) { var factor = getActivityFactor(level); var levelBmr = 0; if (baseGender === 'male') { levelBmr = (10 * baseWeight) + (6.25 * baseHeight) – (5 * baseAge) + 5; } else { levelBmr = (10 * baseWeight) + (6.25 * baseHeight) – (5 * baseAge) – 161; } levelBmr = Math.round(levelBmr); var levelTdee = Math.round(levelBmr * factor); tdees.push(levelTdee); var levelEstimatedPoints = Math.round(levelTdee * pointsPerCalorie); if (baseGender === 'female') { levelEstimatedPoints = Math.max(15, Math.min(40, levelEstimatedPoints)); } else { levelEstimatedPoints = Math.max(20, Math.min(50, levelEstimatedPoints)); } if (level === 'sedentary') levelEstimatedPoints = Math.max(15, Math.min(levelEstimatedPoints – 5, levelEstimatedPoints)); if (level === 'lightly_active') levelEstimatedPoints = Math.max(18, Math.min(30, levelEstimatedPoints)); if (level === 'moderately_active') levelEstimatedPoints = Math.max(25, Math.min(40, levelEstimatedPoints)); if (level === 'very_active') levelEstimatedPoints = Math.max(30, Math.min(45, levelEstimatedPoints)); if (level === 'extra_active') levelEstimatedPoints = Math.max(35, Math.min(50, levelEstimatedPoints)); levelEstimatedPoints = Math.max(14, levelEstimatedPoints); estimatedPointsForAllLevels.push(levelEstimatedPoints); }); // Find the index of the current activity level var currentIndex = activityLevels.indexOf(currentActivityLevel); var chartData = { labels: activityLevels.map(function(level) { return level.replace('_', ' ').replace(/\b\w/g, char => char.toUpperCase()); }), datasets: [ { label: 'Estimated Daily SmartPoints', data: estimatedPointsForAllLevels, borderColor: 'rgba(40, 167, 69, 1)', backgroundColor: 'rgba(40, 167, 69, 0.2)', fill: false, tension: 0.1, pointRadius: 5, pointBackgroundColor: 'rgba(40, 167, 69, 1)' }, { label: 'Total Daily Energy Expenditure (TDEE)', data: tdees, borderColor: 'rgba(0, 74, 153, 1)', backgroundColor: 'rgba(0, 74, 153, 0.2)', fill: false, tension: 0.1, pointRadius: 5, pointBackgroundColor: 'rgba(0, 74, 153, 1)' } ] }; if (window.smartPointsChartInstance) { window.smartPointsChartInstance.destroy(); } window.smartPointsChartInstance = new Chart(ctx, { type: 'line', data: chartData, options: { responsive: true, maintainAspectRatio: false, scales: { y: { beginAtZero: true, title: { display: true, text: 'Value (Points or kcal)' } }, x: { title: { display: true, text: 'Activity Level' } } }, plugins: { tooltip: { callbacks: { label: function(context) { var label = context.dataset.label || "; if (label) { label += ': '; } if (context.parsed.y !== null) { if (context.dataset.label.includes('SmartPoints')) { label += context.parsed.y + ' points'; } else { label += context.parsed.y + ' kcal'; } } return label; } } }, legend: { position: 'top' } }, // Highlight current activity level point annotation: { annotations: { currentPoint: { type: 'point', xValue: chartData.labels[currentIndex], yValue: currentSmartPoints, backgroundColor: 'rgba(40, 167, 69, 0.8)', borderColor: 'rgba(40, 167, 69, 1)', borderWidth: 3, radius: 7, label: { content: `Your Points (${currentSmartPoints})`, enabled: true, position: 'top', color: 'rgba(40, 167, 69, 1)' } }, currentPointTdee: { type: 'point', xValue: chartData.labels[currentIndex], yValue: currentTdee, backgroundColor: 'rgba(0, 74, 153, 0.8)', borderColor: 'rgba(0, 74, 153, 1)', borderWidth: 3, radius: 7, label: { content: `Your TDEE (${currentTdee} kcal)`, enabled: true, position: 'bottom', color: 'rgba(0, 74, 153, 1)' } } } } } }); } function resetCalculator() { document.getElementById('weightKg').value = '75'; document.getElementById('heightCm').value = '170'; document.getElementById('age').value = '35'; document.getElementById('gender').value = 'female'; document.getElementById('activityLevel').value = 'moderately_active'; // Clear errors document.getElementById('weightKgError').innerText = "; document.getElementById('heightCmError').innerText = "; document.getElementById('ageError').innerText = "; // Hide results and clear them document.getElementById('results').style.display = 'none'; document.querySelector('.results-table-wrapper').style.display = 'none'; document.querySelector('.chart-wrapper').style.display = 'none'; document.getElementById('primaryResult').innerText = "; document.getElementById('bmrValue').innerText = "; document.getElementById('tdeeValue').innerText = "; document.getElementById('adjustmentValue').innerText = "; if (window.smartPointsChartInstance) { window.smartPointsChartInstance.destroy(); window.smartPointsChartInstance = null; } } function copyResults() { var primaryResult = document.getElementById('primaryResult').innerText; var bmrValue = document.getElementById('bmrValue').innerText; var tdeeValue = document.getElementById('tdeeValue').innerText; var adjustmentValue = document.getElementById('adjustmentValue').innerText; var tableWeight = document.getElementById('tableWeight').innerText; var tableHeight = document.getElementById('tableHeight').innerText; var tableAge = document.getElementById('tableAge').innerText; var tableGender = document.getElementById('tableGender').innerText; var tableActivity = document.getElementById('tableActivity').innerText; var tableBMR = document.getElementById('tableBMR').innerText; var tableTDEE = document.getElementById('tableTDEE').innerText; var tableSmartPoints = document.getElementById('tableSmartPoints').innerText; var tableAdjustment = document.getElementById('tableAdjustment').innerText; var textToCopy = `— Daily SmartPoints Calculation — Primary Result: ${primaryResult} BMR: ${bmrValue} TDEE: ${tdeeValue} Points Adjustment: ${adjustmentValue} — Calculation Details — Weight: ${tableWeight} kg Height: ${tableHeight} cm Age: ${tableAge} years Gender: ${tableGender} Activity Level: ${tableActivity} BMR Value: ${tableBMR} kcal/day TDEE Value: ${tableTDEE} kcal/day Estimated Daily SmartPoints: ${tableSmartPoints} points Estimated Points Adjustment: ${tableAdjustment} points — Assumptions — This calculator provides an estimate based on standard BMR/TDEE formulas. WW's proprietary algorithm may differ.`; navigator.clipboard.writeText(textToCopy).then(function() { alert('Results copied to clipboard!'); }, function(err) { console.error('Failed to copy results: ', err); alert('Failed to copy results. Please copy manually.'); }); } function toggleFaq(element) { var content = element.nextElementSibling; content.classList.toggle('active'); } // Initial calculation on load if default values are present document.addEventListener('DOMContentLoaded', function() { // Add Chart.js library – requires internet connection or local hosting var chartJsScript = document.createElement('script'); chartJsScript.src = 'https://cdn.jsdelivr.net/npm/chart.js@3.7.0/dist/chart.min.js'; chartJsScript.onload = function() { // Add Chart.js Annotation plugin – requires internet connection or local hosting var annotationJsScript = document.createElement('script'); annotationJsScript.src = 'https://cdn.jsdelivr.net/npm/chartjs-plugin-annotation@1.1.0/dist/chartjs-plugin-annotation.min.js'; annotationJsScript.onload = function() { // Calculate once if inputs have default values if (document.getElementById('weightKg').value && document.getElementById('heightCm').value && document.getElementById('age').value) { calculateSmartPoints(); } }; document.body.appendChild(annotationJsScript); }; document.body.appendChild(chartJsScript); // Add event listeners for real-time updates on input changes document.getElementById('weightKg').addEventListener('input', calculateSmartPoints); document.getElementById('heightCm').addEventListener('input', calculateSmartPoints); document.getElementById('age').addEventListener('input', calculateSmartPoints); document.getElementById('gender').addEventListener('change', calculateSmartPoints); document.getElementById('activityLevel').addEventListener('change', calculateSmartPoints); });

Leave a Comment