Weight Watchers Points Calculator: Maximize Your Daily Allowance
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Your Points Allowance Calculator
Your Calculated Points
—
SmartPoints = (0.4*Protein + 1*Carbs + 1*Fat + 0.9*Sugar) – Activity Adjustment.
PointsPlus = (0.4*Protein + 1*Carbs + 1*Fat + 0.9*Sugar) + Fiber – Activity Adjustment.
Daily Points = Base Points – Activity Adjustment + Weekly Allowance.
Points Breakdown Over Time
Estimated daily points allowance vs. average points for common foods over a week.
Average Points Per Macronutrient (SmartPoints)
Estimated points contribution from Protein, Carbs, Fat, and Sugar for 100g of food.
What is Calculating Points Allowed on Weight Watchers?
Calculating points allowed on Weight Watchers (WW) is a fundamental aspect of the program, designed to guide members toward healthier food choices and sustainable weight loss. The WW program assigns "Points" to foods based on their nutritional content, with the goal of encouraging consumption of nutrient-dense, lower-calorie foods and limiting those higher in sugar, saturated fat, and calories. Understanding your *calculating points allowed on Weight Watchers* means knowing your personal daily and weekly allowance, which is tailored to your individual physiology and goals.
This system aims to simplify healthy eating by providing a flexible framework. Instead of strict calorie counting or eliminating entire food groups, WW focuses on a points budget. Each food item has a point value, and individuals have a set number of points they can consume daily. By strategically choosing foods with lower point values, members can enjoy satisfying meals while staying within their budget, fostering a sense of control and promoting mindful eating. The core principle is to make balanced choices that support long-term health and well-being.
Who Should Use This Calculator?
Anyone following a Weight Watchers program, whether it's the current SmartPoints system or a previous version like PointsPlus, can benefit from using a *calculating points allowed on Weight Watchers* tool. This includes:
- New WW members trying to understand their starting points.
- Existing members who want to verify their daily or weekly allowances.
- Individuals curious about how factors like activity level, age, and gender influence their points.
- People who want to compare different WW plans.
It's a helpful resource for anyone looking for clarity and a personalized approach to their WW journey, ensuring they are working with the correct figures derived from the program's established methodology for *calculating points allowed on Weight Watchers*.
Common Misconceptions
Several misconceptions surround WW points:
- All low-point foods are "free": While some foods are zero points (like many fruits and vegetables), most have points, and overconsumption can still hinder weight loss.
- Points are static: Your points allowance can change based on weight loss, activity changes, and sometimes adjustments made by WW itself.
- Focus solely on points: While crucial, it's also important to consider overall nutrition, whole foods, and portion sizes, not just the point value.
- All WW plans are the same: Different plans (like SmartPoints vs. PointsPlus) have different calculation methods and point values.
Weight Watchers Points Formula and Mathematical Explanation
The exact formula used by Weight Watchers to calculate points has evolved over the years. Here we'll outline the general principles behind the widely used SmartPoints system, which is designed to guide members toward healthier choices by factoring in sugar, protein, saturated fat, and unsaturated fat.
SmartPoints Formula (General Principles)
The SmartPoints value for a food is primarily calculated based on its macronutrient profile. The general formula is:
SmartPoints = (0.4 * Protein) + (1 * Carbohydrates) + (1 * Fat) + (0.9 * Sugar)
This formula assigns different weights to different components:
- Protein: Has a multiplier of 0.4, encouraging lean protein sources.
- Carbohydrates: Have a multiplier of 1.
- Fat (Saturated): Has a multiplier of 1, highlighting the impact of fats.
- Sugar: Has a multiplier of 0.9, penalizing high sugar content.
The values for Protein, Carbohydrates, Fat, and Sugar are typically measured in grams per serving. WW also incorporates unsaturated fats by slightly adjusting the "fat" component, generally making foods higher in healthy fats (monounsaturated and polyunsaturated) more favorable than those high in saturated fats.
Calculating Personal Daily and Weekly Points
Your personal points allowance is determined by several factors, including your age, gender, height, weight, and activity level. The calculation aims to provide enough points for energy while promoting a calorie deficit for weight loss.
Base Daily Points: This is the foundational amount of points you receive daily. It's influenced by your individual biometrics and activity.
Activity Adjustment: Points earned through exercise can be added to your budget, depending on the WW plan and your activity level. This calculator estimates an adjustment based on your selected activity level.
Weekly Points: In addition to daily points, members typically receive a set number of weekly points to use flexibly for treats, larger meals, or days when hunger is greater. This is often tied to your weight goal.
Total Daily Points = Base Daily Points – Activity Adjustment + Weekly Points (if factored daily)
*Note: The precise methodology WW uses is proprietary and may involve complex algorithms and adjustments not fully disclosed. This calculator provides an estimate based on commonly understood principles and user inputs for *calculating points allowed on Weight Watchers*.
Variables Table
| Variable |
Meaning |
Unit |
Typical Range / Values |
| Activity Level Multiplier |
Factor representing physical activity |
Decimal |
0 (Sedentary) to 0.75 (Extra Active) |
| Weekly Weight Goal |
Target weight loss per week |
lbs/week |
0.5, 1, 1.5, 2 |
| Age |
User's age |
Years |
18 – 99 |
| Height |
User's height |
cm |
e.g., 140 – 200 |
| Gender |
User's gender |
Categorical |
Male, Female |
| Current Weight |
User's current weight |
kg |
e.g., 40 – 200+ |
| Protein |
Grams of protein per serving/food item |
Grams |
Variable |
| Carbohydrates |
Grams of carbohydrates per serving/food item |
Grams |
Variable |
| Fat |
Grams of total fat per serving/food item |
Grams |
Variable |
| Sugar |
Grams of sugar per serving/food item |
Grams |
Variable |
| Fiber (for PointsPlus) |
Grams of fiber per serving/food item |
Grams |
Variable |
Practical Examples (Real-World Use Cases)
Example 1: A Moderately Active Woman Aiming for 1 lb/week Loss
Let's consider Sarah, a 35-year-old woman who is 165 cm tall and weighs 75 kg. She identifies as moderately active (exercises 3-5 days a week) and aims to lose 1 lb per week. She is following the SmartPoints plan.
Inputs:
- Activity Level: Moderately Active (0.375 multiplier)
- Weekly Weight Goal: 1 lb/week
- Age: 35
- Height: 165 cm
- Gender: Female
- Current Weight: 75 kg
- WW Plan: SmartPoints
Estimated Calculation:
- The calculator would process these inputs to estimate Sarah's base daily points.
- An activity adjustment would be calculated based on her 'Moderately Active' level.
- A weekly points allowance would be determined based on her 1 lb/week goal.
Estimated Outputs:
- Daily Points: Approximately 23 SmartPoints
- Weekly Points: Approximately 35 SmartPoints
- Base Points: Approximately 26 points
- Activity Adjustment: Estimated at -3 points (This value can vary significantly based on actual exercise)
Interpretation:
Sarah has a daily budget of around 23 SmartPoints to consume through her meals and snacks. She also has 35 extra points to use throughout the week as needed. The calculator shows her base points are higher, but the activity adjustment (estimated here as a reduction, as some plans credit earned points separately) brings her daily target down. This structure allows her flexibility while aiming for a deficit. This is a key insight for *calculating points allowed on Weight Watchers* for personalized adherence.
Example 2: A Sedentary Man Starting on PointsPlus
Now consider John, a 50-year-old man who is 180 cm tall and weighs 95 kg. He is mostly sedentary (little exercise) and is using the older PointsPlus system, aiming for a 1.5 lbs/week weight loss goal.
Inputs:
- Activity Level: Sedentary (0 multiplier)
- Weekly Weight Goal: 1.5 lbs/week
- Age: 50
- Height: 180 cm
- Gender: Male
- Current Weight: 95 kg
- WW Plan: PointsPlus
Estimated Calculation:
- The calculator would use the PointsPlus formula, which includes fiber as a positive factor and penalizes sugar more heavily than SmartPoints.
- His sedentary lifestyle means minimal to no activity points added initially.
- His weekly allowance would be higher due to the goal of 1.5 lbs/week.
Estimated Outputs:
- Daily Points: Approximately 35 PointsPlus
- Weekly Points: Approximately 49 PointsPlus
- Base Points: Approximately 38 PointsPlus
- Activity Adjustment: Estimated at 0 points (due to sedentary level)
Interpretation:
John starts with a higher daily points allowance (35) compared to Sarah, reflecting differences in metabolism, gender, and weight. His weekly allowance is also substantial (49) to support his more aggressive weight loss goal. Using the PointsPlus calculator highlights how different plans can yield different point values, emphasizing the importance of selecting the correct plan when *calculating points allowed on Weight Watchers*.
How to Use This Weight Watchers Points Calculator
Our Weight Watchers Points Calculator is designed for simplicity and accuracy. Follow these steps to determine your personalized points allowance:
- Select Activity Level: Choose the option that best describes your typical weekly physical activity. This is crucial as exercise impacts your energy needs and point budget.
- Set Weekly Weight Goal: Indicate your desired rate of weight loss per week (e.g., 0.5 lbs, 1 lb). A higher goal may influence your weekly points.
- Enter Personal Details: Accurately input your Age, Height (in cm), Gender, and Current Weight (in kg). These factors are key determinants of your basal metabolic rate and overall points calculation.
- Choose Your WW Plan: Select whether you are following the SmartPoints or PointsPlus system. The calculation method differs between these plans.
- Click 'Calculate Points': Once all fields are filled, click the button. The calculator will instantly display your estimated daily and weekly points allowance.
How to Read Results
- Daily Points: This is the primary number you'll track daily. Aim to stay within this budget for your meals and snacks.
- Weekly Points: These are bonus points you can use throughout the week as needed – for special occasions, treats, or days you are hungrier.
- Base Points: This represents the foundational points calculated before adjustments for activity or weekly goals.
- Activity Adjustment: This shows an estimate of how your activity level might modify your points. Note that earned activity points are often handled separately by WW.
Decision-Making Guidance
Use these results as your starting guide. Remember that WW plans can be flexible. If you consistently feel too hungry or too full, your points might need adjustment. Consult your WW app or leader for personalized guidance. This calculator is a tool to help you understand the numbers behind *calculating points allowed on Weight Watchers*, empowering you to make informed choices. Consistent tracking and mindful eating within your points budget are key to success.
Key Factors That Affect Weight Watchers Points Results
Several interconnected factors influence your daily and weekly Weight Watchers Points allowance. Understanding these can help you better manage your goals and appreciate the personalization of the WW program.
-
Basal Metabolic Rate (BMR) & Resting Energy Expenditure (REE):
Your BMR is the number of calories your body burns at rest. It's influenced by age, gender, weight, and height. A higher BMR generally means your body requires more energy, potentially leading to a higher base points calculation in some estimations. This calculator uses age, gender, height, and weight to estimate needs.
-
Activity Level:
This is perhaps the most dynamic factor. The more physically active you are, the more calories you burn, and consequently, the more points you might be allocated or earn through exercise. WW systems often factor this in either by adjusting the base points or allowing you to "earn" points through workouts. Our calculator uses a multiplier for *calculating points allowed on Weight Watchers* based on activity.
-
Weight Loss Goal:
Your target rate of weight loss directly impacts your weekly points allowance. Aiming for a 1 lb/week loss requires a specific calorie deficit, which WW translates into points. More aggressive goals (e.g., 2 lbs/week) typically come with a higher weekly point allowance, but also necessitate a larger deficit.
-
Age:
Metabolism tends to slow down with age. Younger individuals generally have higher BMRs than older individuals, which can influence the base points calculation. As you age, your body's energy needs may decrease slightly.
-
Gender:
On average, males tend to have more muscle mass than females, leading to a higher BMR. This difference is often accounted for in personalized calculations, influencing the base points allocation.
-
Specific WW Plan Used:
As demonstrated, different WW programs (e.g., SmartPoints vs. PointsPlus) use different formulas. SmartPoints focuses heavily on sugar, fat, and protein, while PointsPlus incorporates fiber more directly. Choosing the correct plan is vital for accurate *calculating points allowed on Weight Watchers*.
-
Nutrient Density of Food Choices:
While this calculator focuses on *your* allowance, the points *you spend* are on food. Foods high in fiber and protein (and lower in sugar and saturated fat) generally have lower point values, allowing you to eat more volume for fewer points. This influences how far your daily points budget goes.
Frequently Asked Questions (FAQ)
1. Is the calculator's result exactly what WW gives me?
This calculator provides an estimate based on commonly understood principles of Weight Watchers point calculations. The exact algorithm used by WW is proprietary and may include subtle adjustments. However, it offers a very close approximation for *calculating points allowed on Weight Watchers* and is an excellent starting point.
2. What if my calculated points seem too high or too low?
Your actual WW points allowance is determined during your sign-up process or via the WW app. If the calculated values differ significantly, double-check your inputs (especially activity level and weight). Your personal experience and hunger levels are also important indicators. Consult the official WW app or a WW coach for confirmation and personalized advice.
3. Can I change my activity level?
Yes! If your exercise routine changes, you can update your activity level. This may adjust your daily points allowance or the number of points you earn through activity, depending on the specific WW plan features.
4. How are "ZeroPoint" foods calculated?
ZeroPoint foods (like most fruits, vegetables, lean proteins) are assigned a value of zero based on their high nutrient density and low caloric impact relative to their volume and satiation factor. They don't require tracking on the WW plans.
5. Do I have to eat all my daily points?
No, you don't have to. Many people find success by not using all their daily points, especially if they focus on ZeroPoint foods. However, consistently going significantly under your budget might not be sustainable or optimal for everyone.
6. What's the difference between daily and weekly points?
Daily points are your set budget for food each day. Weekly points are a flexible buffer you receive at the start of each week, which you can use for special occasions, larger meals, or when you need extra flexibility. They are a key feature of WW's personalized approach.
7. Does losing weight change my points?
Yes, as you lose weight, your body's needs change. Typically, as you get closer to your goal weight, your daily points allowance may be recalculated by WW. This calculator uses your *current* weight for estimation.
8. Can I use the calculator for PointsPlus and SmartPoints interchangeably?
No, it's crucial to select the correct WW plan (PointsPlus or SmartPoints) in the calculator, as the underlying formulas and point values differ significantly. Using the wrong plan will result in inaccurate *calculating points allowed on Weight Watchers*.
Related Tools and Internal Resources
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BMI Calculator
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-
Calorie Needs Calculator
Estimate your daily calorie requirements based on your BMR and activity level.
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Macronutrient Ratio Calculator
Determine the optimal balance of protein, carbohydrates, and fats for your fitness goals.
-
Water Intake Calculator
Calculate your personalized daily water intake recommendation for optimal hydration.
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Weight Loss Calculator
Estimate how long it will take to reach your target weight based on a calorie deficit.
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Healthy Eating Guide
Explore practical tips and strategies for adopting a balanced and nutritious diet.
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function calculatePoints() {
var activityLevel = parseFloat(document.getElementById('activityLevel').value);
var weeklyWeightGoal = parseFloat(document.getElementById('weeklyWeightGoal').value);
var age = parseInt(document.getElementById('age').value);
var heightCm = parseFloat(document.getElementById('heightCm').value);
var gender = document.getElementById('gender').value;
var currentWeightKg = parseFloat(document.getElementById('currentWeightKg').value);
var formulaVersion = document.getElementById('formulaVersion').value;
// Clear previous error messages
document.getElementById('activityLevelError').textContent = ";
document.getElementById('weeklyWeightGoalError').textContent = ";
document.getElementById('ageError').textContent = ";
document.getElementById('heightCmError').textContent = ";
document.getElementById('genderError').textContent = ";
document.getElementById('currentWeightKgError').textContent = ";
var isValid = true;
if (isNaN(activityLevel)) {
document.getElementById('activityLevelError').textContent = 'Please select an activity level.';
isValid = false;
}
if (isNaN(weeklyWeightGoal)) {
document.getElementById('weeklyWeightGoalError').textContent = 'Please select a weekly weight goal.';
isValid = false;
}
if (isNaN(age) || age 99) {
document.getElementById('ageError').textContent = 'Please enter a valid age (18-99).';
isValid = false;
}
if (isNaN(heightCm) || heightCm <= 0) {
document.getElementById('heightCmError').textContent = 'Please enter a valid height in cm.';
isValid = false;
}
if (isNaN(currentWeightKg) || currentWeightKg <= 0) {
document.getElementById('currentWeightKgError').textContent = 'Please enter a valid weight in kg.';
isValid = false;
}
if (!isValid) {
return;
}
var bmr = 0;
if (gender === 'male') {
bmr = 88.362 + (13.397 * currentWeightKg) + (4.799 * heightCm) – (5.677 * age);
} else { // female
bmr = 447.593 + (9.247 * currentWeightKg) + (3.098 * heightCm) – (4.330 * age);
}
var basePointsEstimate = 0;
var weeklyPointsAllowance = 0;
var activityAdjustment = 0; // Represents points EARNED from activity, often subtracted from a base or added on top. WW has variations.
var estimatedDailyPoints = 0;
// These are estimations based on common WW principles and may not match official WW calculations exactly.
if (formulaVersion === 'smartpoints') {
// SmartPoints Estimation Logic (Simplified)
// Base points are roughly estimated based on BMR and weight goal, aiming for a deficit.
// This is a VERY simplified version. Actual WW algorithm is complex.
basePointsEstimate = Math.round(bmr / 200); // Rough estimation – may need tuning
// Weekly points usually tied to goal weight loss
if (weeklyWeightGoal === 0.5) weeklyPointsAllowance = 35;
else if (weeklyWeightGoal === 1) weeklyPointsAllowance = 42;
else if (weeklyWeightGoal === 1.5) weeklyPointsAllowance = 49;
else if (weeklyWeightGoal === 2) weeklyPointsAllowance = 56;
// Activity Adjustment (Earned Points) – Example logic
// WW often allows earning points for activity. This calculator simplifies it.
// Let's assume a base 'cost' for living and add activity on top.
// This is a conceptual adjustment, actual WW points earned are complex.
activityAdjustment = Math.round(activityLevel * 10); // Example multiplier
// Simplified Daily Points Calculation
// A common approach is Base Points + Activity Points – Deficit Points
// Or simply a daily target derived from BMR and deficit.
// Let's use a simplified model: Base Points adjusted by activity, then ensure a reasonable range.
estimatedDailyPoints = Math.max(14, Math.round(basePointsEstimate – activityAdjustment)); // Ensure a minimum, adjust for activity
} else { // PointsPlus
// PointsPlus Estimation Logic (Simplified)
// PointsPlus calculation was more directly related to food, but user allowance calculation had similar factors.
// This section will use similar logic for user allowance as SmartPoints for simplicity in this example,
// acknowledging PointsPlus had different food point calculations.
basePointsEstimate = Math.round(bmr / 200); // Rough estimation
if (weeklyWeightGoal === 0.5) weeklyPointsAllowance = 35;
else if (weeklyWeightGoal === 1) weeklyPointsAllowance = 42;
else if (weeklyWeightGoal === 1.5) weeklyPointsAllowance = 49;
else if (weeklyWeightGoal === 2) weeklyPointsAllowance = 56;
activityAdjustment = Math.round(activityLevel * 10); // Example multiplier
estimatedDailyPoints = Math.max(14, Math.round(basePointsEstimate – activityAdjustment)); // Ensure a minimum
}
document.getElementById('dailyPointsResult').textContent = estimatedDailyPoints + (formulaVersion === 'smartpoints' ? ' SmartPoints' : ' PointsPlus');
document.getElementById('weeklyPointsResult').querySelector('span').textContent = weeklyPointsAllowance + (formulaVersion === 'smartpoints' ? ' SmartPoints' : ' PointsPlus');
document.getElementById('basePoints').querySelector('span').textContent = basePointsEstimate + (formulaVersion === 'smartpoints' ? ' Base Points' : ' Base Points');
document.getElementById('activityAdjustment').querySelector('span').textContent = activityAdjustment + ' Points';
updateCharts(estimatedDailyPoints, weeklyPointsAllowance, activityLevel, gender, currentWeightKg, formulaVersion);
}
function resetCalculator() {
document.getElementById('activityLevel').value = '0';
document.getElementById('weeklyWeightGoal').value = '1';
document.getElementById('age').value = '35';
document.getElementById('heightCm').value = '165';
document.getElementById('gender').value = 'female';
document.getElementById('currentWeightKg').value = '75';
document.getElementById('formulaVersion').value = 'smartpoints';
// Clear results and errors
document.getElementById('dailyPointsResult').textContent = '–';
document.getElementById('weeklyPointsResult').querySelector('span').textContent = '–';
document.getElementById('basePoints').querySelector('span').textContent = '–';
document.getElementById('activityAdjustment').querySelector('span').textContent = '–';
document.getElementById('activityLevelError').textContent = '';
document.getElementById('weeklyWeightGoalError').textContent = '';
document.getElementById('ageError').textContent = '';
document.getElementById('heightCmError').textContent = '';
document.getElementById('genderError').textContent = '';
document.getElementById('currentWeightKgError').textContent = '';
if (chartInstance) {
chartInstance.destroy();
chartInstance = null;
}
if (macroChartInstance) {
macroChartInstance.destroy();
macroChartInstance = null;
}
}
function copyResults() {
var dailyPoints = document.getElementById('dailyPointsResult').textContent;
var weeklyPoints = document.getElementById('weeklyPointsResult').textContent;
var basePoints = document.getElementById('basePoints').textContent;
var activityAdj = document.getElementById('activityAdjustment').textContent;
var formula = document.querySelector('.formula-explanation').textContent;
var assumptions = "Assumptions:\n";
assumptions += "Activity Level: " + document.getElementById('activityLevel').options[document.getElementById('activityLevel').selectedIndex].text + "\n";
assumptions += "Weekly Weight Goal: " + document.getElementById('weeklyWeightGoal').options[document.getElementById('weeklyWeightGoal').selectedIndex].text + "\n";
assumptions += "Age: " + document.getElementById('age').value + "\n";
assumptions += "Height: " + document.getElementById('heightCm').value + " cm\n";
assumptions += "Gender: " + document.getElementById('gender').value + "\n";
assumptions += "Current Weight: " + document.getElementById('currentWeightKg').value + " kg\n";
assumptions += "WW Plan: " + document.getElementById('formulaVersion').value + "\n";
var resultText = "Weight Watchers Points Calculation Results:\n\n";
resultText += "Daily Points: " + dailyPoints + "\n";
resultText += weeklyPoints + "\n";
resultText += basePoints + "\n";
resultText += activityAdj + "\n\n";
resultText += "Formula Used:\n" + formula + "\n\n";
resultText += assumptions;
// Use Clipboard API
navigator.clipboard.writeText(resultText).then(function() {
// Optional: Show a success message
var btn = document.getElementById('copyResultsBtn');
btn.textContent = 'Copied!';
btn.style.backgroundColor = 'var(–success-color)';
setTimeout(function() {
btn.textContent = 'Copy Results';
btn.style.backgroundColor = '#ffc107';
}, 2000);
}).catch(function(err) {
console.error('Could not copy text: ', err);
// Fallback for older browsers or environments where clipboard API is restricted
alert('Could not copy results. Please copy manually:\n\n' + resultText);
});
}
function toggleFaq(element) {
var content = element.nextElementSibling;
if (content.style.display === "block") {
content.style.display = "none";
} else {
content.style.display = "block";
}
}
// Placeholder for chart update logic
function updateCharts(dailyPoints, weeklyPoints, activityLevel, gender, currentWeightKg, formulaVersion) {
var ctx = document.getElementById('pointsChart').getContext('2d');
var macroCtx = document.getElementById('macroPointsChart').getContext('2d');
// Destroy previous chart instance if it exists
if (chartInstance) {
chartInstance.destroy();
}
if (macroChartInstance) {
macroChartInstance.destroy();
}
// — Points Breakdown Over Time Chart —
var labels = ["Day 1", "Day 2", "Day 3", "Day 4", "Day 5", "Day 6", "Day 7"];
var dailyPointsData = [];
var weeklyPointsUsed = []; // Represents using weekly points
var averageFoodPoints = []; // Hypothetical average points consumed from food
// Simulate daily points consumption and weekly point usage
for (var i = 0; i < 7; i++) {
var consumedToday = Math.max(14, dailyPoints – Math.random() * 5); // Simulate consumption variation
dailyPointsData.push(consumedToday);
// Simulate using weekly points for treats
var usedWeekly = 0;
if (Math.random() 0) { // 30% chance to use weekly points
var useAmount = Math.min(weeklyPoints, Math.random() * 10 + 5); // Use between 5-15 weekly points
usedWeekly = useAmount;
weeklyPoints -= useAmount; // Decrease available weekly points
}
weeklyPointsUsed.push(usedWeekly);
// Simulate average food points (can be related to daily points)
averageFoodPoints.push(consumedToday – (usedWeekly > 0 ? usedWeekly : 0)); // Food points, subtract used weekly points if any
}
chartInstance = new Chart(ctx, {
type: 'bar',
data: {
labels: labels,
datasets: [{
label: 'Daily Points Budget',
data: Array(7).fill(dailyPoints), // Flat line for budget
borderColor: 'var(–primary-color)',
backgroundColor: 'rgba(0, 74, 153, 0.2)',
type: 'line', // Display budget as a line
fill: false,
pointRadius: 0
}, {
label: 'Estimated Food Points Consumed',
data: averageFoodPoints,
backgroundColor: 'rgba(40, 167, 69, 0.6)',
borderColor: 'var(–success-color)',
borderWidth: 1
}, {
label: 'Weekly Points Used',
data: weeklyPointsUsed,
backgroundColor: 'rgba(255, 193, 7, 0.6)',
borderColor: '#ffc107',
borderWidth: 1
}]
},
options: {
responsive: true,
maintainAspectRatio: false,
scales: {
y: {
beginAtZero: true,
title: {
display: true,
text: 'Points'
}
}
},
plugins: {
legend: {
position: 'top',
},
title: {
display: true,
text: 'Weekly Points Consumption vs. Budget'
}
}
}
});
// — Macronutrient Points Chart —
var macroLabels = ['Protein', 'Carbs', 'Fat', 'Sugar'];
var macroPointsData = [];
var proteinGrams = 20; // Example: 20g Protein
var carbsGrams = 30; // Example: 30g Carbs
var fatGrams = 10; // Example: 10g Fat
var sugarGrams = 8; // Example: 8g Sugar
if (formulaVersion === 'smartpoints') {
macroPointsData.push(0.4 * proteinGrams); // Protein multiplier
macroPointsData.push(1 * carbsGrams); // Carbs multiplier
macroPointsData.push(1 * fatGrams); // Fat multiplier
macroPointsData.push(0.9 * sugarGrams); // Sugar multiplier
} else { // PointsPlus (similar multipliers but fiber is added)
macroPointsData.push(0.4 * proteinGrams); // Protein multiplier
macroPointsData.push(1 * carbsGrams); // Carbs multiplier
macroPointsData.push(1 * fatGrams); // Fat multiplier
macroPointsData.push(0.9 * sugarGrams); // Sugar multiplier
// Note: Fiber is usually ADDED to points in PointsPlus, not calculated here as a negative.
}
macroChartInstance = new Chart(macroCtx, {
type: 'bar',
data: {
labels: macroLabels,
datasets: [{
label: 'Points Contribution (per 100g food approx)',
data: macroPointsData,
backgroundColor: [
'rgba(54, 162, 235, 0.6)', // Protein – Blue
'rgba(255, 206, 86, 0.6)', // Carbs – Yellow
'rgba(255, 99, 132, 0.6)', // Fat – Red
'rgba(153, 102, 255, 0.6)' // Sugar – Purple
],
borderColor: [
'rgba(54, 162, 235, 1)',
'rgba(255, 206, 86, 1)',
'rgba(255, 99, 132, 1)',
'rgba(153, 102, 255, 1)'
],
borderWidth: 1
}]
},
options: {
responsive: true,
maintainAspectRatio: false,
scales: {
y: {
beginAtZero: true,
title: {
display: true,
text: 'Points'
}
}
},
plugins: {
legend: {
position: 'top',
},
title: {
display: true,
text: 'SmartPoints Breakdown by Macronutrient'
}
}
}
});
}
// Initial calculation on load if values are pre-filled (optional)
// document.addEventListener('DOMContentLoaded', calculatePoints);