Weight Watchers Points Allowance Calculator 2012 – Calculate Your Daily Points
body {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
line-height: 1.6;
background-color: #f8f9fa;
color: #333;
margin: 0;
padding: 0;
}
.container {
max-width: 960px;
margin: 20px auto;
padding: 20px;
background-color: #fff;
border-radius: 8px;
box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}
header {
background-color: #004a99;
color: #fff;
padding: 20px 0;
text-align: center;
border-radius: 8px 8px 0 0;
margin-bottom: 20px;
}
header h1 {
margin: 0;
font-size: 2.2em;
}
.calculator-section {
margin-bottom: 30px;
padding: 25px;
border: 1px solid #e0e0e0;
border-radius: 8px;
background-color: #fdfdfd;
}
.calculator-section h2 {
color: #004a99;
margin-top: 0;
text-align: center;
margin-bottom: 20px;
}
.input-group {
margin-bottom: 15px;
display: flex;
flex-direction: column;
align-items: flex-start;
}
.input-group label {
display: block;
margin-bottom: 8px;
font-weight: bold;
color: #555;
}
.input-group input[type="number"],
.input-group select {
width: 100%;
padding: 10px;
border: 1px solid #ccc;
border-radius: 4px;
box-sizing: border-box;
font-size: 1em;
}
.input-group input[type="number"]:focus,
.input-group select:focus {
border-color: #004a99;
outline: none;
box-shadow: 0 0 0 2px rgba(0, 74, 153, 0.2);
}
.input-group .helper-text {
font-size: 0.85em;
color: #777;
margin-top: 5px;
}
.error-message {
color: #dc3545;
font-size: 0.85em;
margin-top: 5px;
display: none; /* Hidden by default */
}
.button-group {
display: flex;
justify-content: space-between;
margin-top: 20px;
gap: 10px;
}
button {
padding: 12px 20px;
border: none;
border-radius: 5px;
cursor: pointer;
font-size: 1em;
font-weight: bold;
transition: background-color 0.3s ease;
}
.btn-calculate {
background-color: #004a99;
color: white;
flex-grow: 1;
}
.btn-calculate:hover {
background-color: #003366;
}
.btn-reset {
background-color: #6c757d;
color: white;
}
.btn-reset:hover {
background-color: #5a6268;
}
.btn-copy {
background-color: #28a745;
color: white;
}
.btn-copy:hover {
background-color: #218838;
}
.results-section {
margin-top: 30px;
padding: 25px;
border: 1px solid #e0e0e0;
border-radius: 8px;
background-color: #f0f8ff; /* Light blue tint for results */
}
.results-section h2 {
color: #004a99;
margin-top: 0;
text-align: center;
margin-bottom: 20px;
}
#primary-result {
font-size: 2.5em;
font-weight: bold;
color: #28a745;
text-align: center;
margin-bottom: 20px;
padding: 15px;
background-color: #e9f7ef; /* Light green tint */
border-radius: 5px;
border: 1px solid #28a745;
}
.intermediate-results div, .formula-explanation {
margin-bottom: 15px;
padding: 10px;
background-color: #f8f9fa;
border-radius: 4px;
border-left: 4px solid #004a99;
}
.intermediate-results span, .formula-explanation span {
font-weight: bold;
color: #004a99;
}
.formula-explanation {
font-style: italic;
color: #555;
border-left-color: #6c757d;
}
table {
width: 100%;
border-collapse: collapse;
margin-top: 20px;
margin-bottom: 20px;
}
th, td {
padding: 10px;
text-align: left;
border-bottom: 1px solid #ddd;
}
th {
background-color: #004a99;
color: white;
font-weight: bold;
}
tr:nth-child(even) {
background-color: #f2f2f2;
}
caption {
font-size: 1.1em;
font-weight: bold;
color: #004a99;
margin-bottom: 10px;
text-align: left;
}
canvas {
display: block;
margin: 20px auto;
max-width: 100%;
border: 1px solid #ccc;
border-radius: 4px;
}
.chart-container {
text-align: center;
margin-top: 20px;
}
.chart-caption {
font-size: 0.9em;
color: #777;
margin-top: 10px;
}
.article-section {
margin-top: 40px;
padding-top: 20px;
border-top: 1px solid #eee;
}
.article-section h2, .article-section h3 {
color: #004a99;
margin-bottom: 15px;
}
.article-section h3 {
margin-top: 25px;
}
.article-section p {
margin-bottom: 15px;
}
.article-section ul, .article-section ol {
margin-left: 20px;
margin-bottom: 15px;
}
.article-section li {
margin-bottom: 8px;
}
.faq-item {
margin-bottom: 15px;
padding: 10px;
background-color: #fdfdfd;
border-left: 3px solid #004a99;
border-radius: 4px;
}
.faq-item strong {
color: #004a99;
display: block;
margin-bottom: 5px;
}
.internal-links-section {
margin-top: 40px;
padding-top: 20px;
border-top: 1px solid #eee;
}
.internal-links-section h2 {
color: #004a99;
margin-bottom: 15px;
}
.internal-links-section ul {
list-style: none;
padding: 0;
}
.internal-links-section li {
margin-bottom: 10px;
}
.internal-links-section a {
color: #004a99;
text-decoration: none;
font-weight: bold;
}
.internal-links-section a:hover {
text-decoration: underline;
}
.internal-links-section p {
font-size: 0.9em;
color: #555;
margin-top: 5px;
}
@media (max-width: 768px) {
.container {
margin: 10px;
padding: 15px;
}
header h1 {
font-size: 1.8em;
}
.button-group {
flex-direction: column;
gap: 10px;
}
button {
width: 100%;
}
}
Weight Watchers Points Allowance Calculator 2012
Calculate Your Daily Points
Your Results
—
Formula Used: The 2012 Weight Watchers Points Plus system calculated points based on a formula considering protein, carbohydrates, fat, and fiber. This calculator uses a simplified approach to estimate a daily allowance based on personal factors, reflecting the spirit of the 2012 plan. The core calculation involves estimating Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE), then applying a points conversion factor.
Points Breakdown by Macronutrient (Estimated)
| Macronutrient |
Estimated Points Value |
Contribution to Daily Allowance |
| Protein |
— |
— |
| Carbohydrates |
— |
— |
| Fat |
— |
— |
| Fiber |
— |
— |
What is the Weight Watchers Points Allowance Calculator 2012?
The Weight Watchers Points Allowance Calculator 2012 is a tool designed to help individuals estimate their daily points budget according to the Weight Watchers PointsPlus program, specifically as it was structured in 2012. This program aimed to simplify healthy eating by assigning a points value to foods based on their nutritional content (protein, carbohydrates, fat, and fiber). Understanding your personalized points allowance is the first step in effectively following the Weight Watchers plan for weight loss and healthier habits. This calculator provides an estimated daily target, empowering users to make informed food choices.
Who should use it? Anyone interested in or currently following the Weight Watchers PointsPlus program from the 2012 era, or those looking for a structured approach to calorie and nutrient-conscious eating. It's particularly useful for individuals who want a quantifiable target for their daily food intake. It can also serve as a reference for those curious about how the PointsPlus system worked.
Common misconceptions: A common misconception is that the calculator provides an exact, medically prescribed diet plan. It's an estimation tool based on general formulas. Another is that all "zero-point" foods are equal; the 2012 system did highlight certain healthy foods as zero-point, but portion control and overall balance remained crucial. This calculator focuses on the *allowance*, not specific food recommendations.
Weight Watchers Points Allowance Calculator 2012: Formula and Mathematical Explanation
The 2012 Weight Watchers PointsPlus system was a significant evolution from previous plans, focusing on a more nuanced calculation that rewarded healthier ingredients. While the exact proprietary algorithm is not public, the core principles are understood. This calculator uses a common estimation method that aligns with the program's known factors.
The process generally involves these steps:
- Calculate Basal Metabolic Rate (BMR): This is the number of calories your body burns at rest. The Mifflin-St Jeor equation is widely used and considered accurate:
- 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
- Calculate Total Daily Energy Expenditure (TDEE): This estimates your total daily calorie needs by multiplying your 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
- Convert TDEE to Points: The 2012 PointsPlus system converted calories into points using a specific formula that factored in macronutrients. A simplified approach often used for estimation is to divide the TDEE by a factor that approximates the points conversion. For the 2012 system, a common estimate suggests dividing TDEE by approximately 50-55 calories per point for a starting daily allowance. This calculator uses a factor of 52.5 as a representative value.
Variable Explanations:
Variables Used in Calculation
| Variable |
Meaning |
Unit |
Typical Range |
| Age |
User's age |
Years |
18 – 80+ |
| Gender |
User's biological sex |
Categorical (Male/Female) |
Male, Female |
| Weight |
User's current weight |
Pounds (lbs) |
80 – 500+ |
| Height |
User's height |
Inches (in) |
48 – 84+ |
| Activity Level |
Frequency and intensity of exercise/daily movement |
Categorical |
Sedentary to Extra Active |
| BMR |
Basal Metabolic Rate (calories burned at rest) |
Calories/day |
1000 – 2500+ |
| TDEE |
Total Daily Energy Expenditure (total calories burned daily) |
Calories/day |
1500 – 3500+ |
| Points Allowance |
Estimated daily points budget |
Points |
20 – 60+ |
The Weight Watchers Points Allowance Calculator 2012 provides a starting point. Remember, the actual PointsPlus formula was proprietary and included specific weights for protein, carbs, fat, and fiber, rewarding healthier choices like lean protein and fiber.
Practical Examples (Real-World Use Cases)
Let's explore how the Weight Watchers Points Allowance Calculator 2012 works with realistic scenarios.
Example 1: Sarah, a Moderately Active Woman
Sarah is 35 years old, female, weighs 160 lbs, and is 5'6″ tall. She works an office job but goes to the gym for moderate exercise 3-4 times a week. She wants to know her starting daily points allowance.
- Inputs:
- Age: 35
- Gender: Female
- Weight: 160 lbs
- Height: 5′ 6″ (66 inches)
- Activity Level: Moderately Active
- Calculation Steps (Simplified):
- Convert weight to kg: 160 lbs / 2.20462 ≈ 72.57 kg
- Convert height to cm: 66 inches × 2.54 ≈ 167.64 cm
- Calculate BMR (Female): (10 × 72.57) + (6.25 × 167.64) – (5 × 35) – 161 ≈ 725.7 + 1047.75 – 175 – 161 ≈ 1437.45 calories
- Calculate TDEE (Moderately Active): 1437.45 × 1.55 ≈ 2228 calories
- Estimate Daily Points Allowance: 2228 / 52.5 ≈ 42.4 points
- Calculator Output (Estimated):
- Primary Result: 42 Points
- BMR: ~1437 Calories
- TDEE: ~2228 Calories
- Base Points: ~42 Points
- Interpretation: Sarah's estimated daily points allowance is around 42 points. This gives her a target to manage her food intake effectively within the 2012 Weight Watchers framework. She should aim to consume nutrient-dense foods that offer more satiety per point.
Example 2: Mark, a Very Active Man
Mark is 48 years old, male, weighs 210 lbs, and is 6'1″ tall. He has a physically demanding job and exercises intensely 6 days a week. He needs to understand his points budget.
- Inputs:
- Age: 48
- Gender: Male
- Weight: 210 lbs
- Height: 6′ 1″ (73 inches)
- Activity Level: Very Active
- Calculation Steps (Simplified):
- Convert weight to kg: 210 lbs / 2.20462 ≈ 95.25 kg
- Convert height to cm: 73 inches × 2.54 ≈ 185.42 cm
- Calculate BMR (Male): (10 × 95.25) + (6.25 × 185.42) – (5 × 48) + 5 ≈ 952.5 + 1158.88 – 240 + 5 ≈ 1876.38 calories
- Calculate TDEE (Very Active): 1876.38 × 1.725 ≈ 3237 calories
- Estimate Daily Points Allowance: 3237 / 52.5 ≈ 61.7 points
- Calculator Output (Estimated):
- Primary Result: 62 Points
- BMR: ~1876 Calories
- TDEE: ~3237 Calories
- Base Points: ~62 Points
- Interpretation: Mark's higher activity level and weight result in a significantly higher estimated daily points allowance of around 62 points. This reflects the greater energy needs of someone with his lifestyle. He can use this allowance to fuel his demanding days while still working towards weight management goals.
These examples illustrate how personal factors dramatically influence the calculated Weight Watchers Points Allowance Calculator 2012. The tool provides a personalized starting point for managing food intake.
How to Use This Weight Watchers Points Allowance Calculator 2012
Using the Weight Watchers Points Allowance Calculator 2012 is straightforward. Follow these steps to get your estimated daily points budget:
- Enter Your Age: Input your current age in whole years.
- Select Your Gender: Choose 'Male' or 'Female'.
- Input Your Weight: Enter your current weight in pounds (lbs).
- Enter Your Height: Input your height first in feet, then in inches.
- Choose Your Activity Level: Select the option that best describes your typical weekly physical activity, from 'Sedentary' to 'Extra Active'.
- Click 'Calculate Points': Once all fields are filled, press the calculate button.
How to Read Results:
- Primary Highlighted Result: This is your estimated daily points allowance. Aim to stay within this number each day.
- Intermediate Values (BMR, TDEE, Base Points): These provide context. BMR is your resting calorie burn, TDEE is your total daily calorie burn, and Base Points shows the calculated allowance before any potential adjustments.
- Formula Explanation: This section briefly describes the underlying logic used for the calculation.
- Chart and Table: These offer a visual and tabular breakdown of how points might be allocated across macronutrients, giving a sense of balance.
Decision-Making Guidance:
- Use your calculated points allowance as a daily target.
- Prioritize foods that are nutrient-dense and provide satiety (like lean proteins, fruits, vegetables, and whole grains). The 2012 PointsPlus system specifically rewarded fiber and protein.
- Remember this is an estimate. Listen to your body and adjust portion sizes as needed.
- Consider consulting with a healthcare provider or a registered dietitian for personalized advice, especially if you have underlying health conditions.
- Use the 'Reset' button to clear the form and start over.
- Use the 'Copy Results' button to easily share or save your calculated figures.
This Weight Watchers Points Allowance Calculator 2012 is a tool to guide your journey, not a rigid rulebook. Consistent effort and mindful eating are key.
Key Factors That Affect Weight Watchers Points Allowance Results
Several factors significantly influence the points allowance calculated by tools like the Weight Watchers Points Allowance Calculator 2012. Understanding these can help you interpret your results and make informed decisions:
- Weight: Heavier individuals generally have a higher BMR and TDEE, leading to a higher points allowance. This is because more energy is required to maintain a larger body mass.
- Height: Taller individuals, particularly men, tend to have higher BMRs due to a larger surface area and potentially more lean mass, thus influencing the points calculation.
- Age: Metabolism naturally slows down with age. As people get older, their BMR tends to decrease, which can lead to a lower estimated points allowance if other factors remain constant.
- Gender: Men typically have more muscle mass than women of the same weight and height, resulting in a higher BMR and consequently a higher points allowance.
- Activity Level: This is one of the most significant variables. The more physically active you are, the higher your TDEE, and thus the higher your points allowance. This factor directly accounts for the calories burned through exercise and daily movement.
- Body Composition (Lean Mass vs. Fat Mass): While not directly an input in this simplified calculator, lean muscle mass burns more calories at rest than fat mass. Individuals with higher muscle percentages will have a higher BMR, potentially leading to a higher points allowance than someone of the same weight with a lower muscle percentage.
- Metabolic Rate Variations: Individual metabolic rates can vary due to genetics, hormonal factors, and other physiological differences. The formulas used are averages, and actual metabolic needs might differ.
- Program Specifics (2012 PointsPlus): The actual 2012 Weight Watchers PointsPlus formula itself was designed to reward healthier choices. Foods high in protein and fiber were assigned fewer points per calorie compared to those high in fat or sugar. This calculator estimates the *allowance*, but the *value* of foods within that allowance is key to the WW philosophy.
These factors interact to determine your unique energy needs, which the Weight Watchers Points Allowance Calculator 2012 attempts to estimate. Always consider these influences when planning your meals.
Frequently Asked Questions (FAQ)
Q1: Is the 2012 Weight Watchers PointsPlus system still in use?
A1: No, Weight Watchers has evolved its program multiple times since 2012. While the principles of points-based tracking remain, the specific formulas and zero-point foods have changed. This calculator is specifically for the 2012 version.
Q2: How accurate is this calculator?
A2: This calculator provides an *estimated* daily points allowance based on widely accepted formulas for BMR and TDEE, and a common conversion factor for the 2012 PointsPlus system. Individual metabolic rates can vary, so it's a starting point, not a definitive measure.
Q3: What are "zero-point" foods in the 2012 system?
A3: In the 2012 PointsPlus plan, certain healthy foods like fruits, non-starchy vegetables, lean proteins (like chicken breast, fish, beans), and yogurt were designated as "zero-point" foods. This meant they didn't count towards the daily points budget, encouraging their consumption.
Q4: Can I use this calculator if I'm not trying to lose weight?
A4: Yes, the calculator estimates your TDEE (Total Daily Energy Expenditure), which represents the calories needed to maintain your current weight. You can use the calculated points allowance as a maintenance budget, though adjustments might be needed based on your specific goals and activity.
Q5: What if my weight fluctuates a lot?
A5: If your weight changes significantly, it's recommended to recalculate your points allowance using the calculator. Weight is a key factor in determining your energy needs and points budget.
Q6: Does the calculator account for weekly "bonus" or "flex" points?
A6: This calculator primarily focuses on the *daily* points allowance. The 2012 Weight Watchers program also typically included weekly "bonus" or "flex" points, which were extra points for flexibility. These are not calculated here but are an important part of the overall WW plan.
Q7: How did fiber affect points in the 2012 system?
A7: The 2012 PointsPlus system was designed to give "credit" for fiber. Foods higher in fiber generally had fewer points per calorie compared to foods with less fiber, making whole grains and vegetables more favorable.
Q8: Should I round my points allowance?
A8: It's common practice to round your calculated points allowance to the nearest whole number. For example, if the calculator shows 42.4 points, you would likely use 42 points as your daily target.
Related Tools and Internal Resources
var chartInstance = null; // Global variable to hold chart instance
function calculatePoints() {
// Clear previous errors
document.getElementById('ageError').style.display = 'none';
document.getElementById('weightError').style.display = 'none';
document.getElementById('heightFeetError').style.display = 'none';
document.getElementById('heightInchesError').style.display = 'none';
// Get input values
var age = parseFloat(document.getElementById('age').value);
var gender = document.getElementById('gender').value;
var weight = parseFloat(document.getElementById('weight').value);
var heightFeet = parseFloat(document.getElementById('heightFeet').value);
var heightInches = parseFloat(document.getElementById('heightInches').value);
var activityLevel = document.getElementById('activityLevel').value;
// — Input Validation —
var isValid = true;
if (isNaN(age) || age 120) {
document.getElementById('ageError').textContent = 'Please enter a valid age between 1 and 120.';
document.getElementById('ageError').style.display = 'block';
isValid = false;
}
if (isNaN(weight) || weight 1000) {
document.getElementById('weightError').textContent = 'Please enter a valid weight between 1 and 1000 lbs.';
document.getElementById('weightError').style.display = 'block';
isValid = false;
}
if (isNaN(heightFeet) || heightFeet 8) {
document.getElementById('heightFeetError').textContent = 'Please enter a valid number of feet (0-8).';
document.getElementById('heightFeetError').style.display = 'block';
isValid = false;
}
if (isNaN(heightInches) || heightInches 11) {
document.getElementById('heightInchesError').textContent = 'Please enter a valid number of inches (0-11).';
document.getElementById('heightInchesError').style.display = 'block';
isValid = false;
}
if (!isValid) {
// Clear results if validation fails
document.getElementById('primary-result').textContent = '–';
document.getElementById('bmr-result').innerHTML = '
BMR: –';
document.getElementById('tdee-result').innerHTML = '
TDEE: –';
document.getElementById('base-points-result').innerHTML = '
Base Points: –';
clearChart();
clearTable();
return;
}
// — Calculations —
var weightKg = weight / 2.20462;
var heightCm = (heightFeet * 12 + heightInches) * 2.54;
var bmr = 0;
// Mifflin-St Jeor Equation
if (gender === 'male') {
bmr = (10 * weightKg) + (6.25 * heightCm) – (5 * age) + 5;
} else { // female
bmr = (10 * weightKg) + (6.25 * heightCm) – (5 * age) – 161;
}
var activityMultiplier = 0;
switch (activityLevel) {
case 'sedentary':
activityMultiplier = 1.2;
break;
case 'lightly_active':
activityMultiplier = 1.375;
break;
case 'moderately_active':
activityMultiplier = 1.55;
break;
case 'very_active':
activityMultiplier = 1.725;
break;
case 'extra_active':
activityMultiplier = 1.9;
break;
default:
activityMultiplier = 1.2; // Default to sedentary
}
var tdee = bmr * activityMultiplier;
// Approximate 2012 WW PointsPlus conversion factor (calories per point)
// This is an estimation, as the exact formula was proprietary.
// A common estimate is around 50-55 calories per point. We'll use 52.5.
var caloriesPerPoint = 52.5;
var dailyPoints = tdee / caloriesPerPoint;
// Round to nearest whole number for the primary result
var roundedDailyPoints = Math.round(dailyPoints);
// — Display Results —
document.getElementById('primary-result').textContent = roundedDailyPoints + ' Points';
document.getElementById('bmr-result').innerHTML = '
BMR: ' + Math.round(bmr) + ' Calories';
document.getElementById('tdee-result').innerHTML = '
TDEE: ' + Math.round(tdee) + ' Calories';
document.getElementById('base-points-result').innerHTML = '
Base Points: ' + roundedDailyPoints + ' Points';
// — Update Chart and Table —
updateChartAndTable(tdee, roundedDailyPoints);
}
function updateChartAndTable(tdee, dailyPoints) {
var ctx = document.getElementById('pointsChart').getContext('2d');
// Estimated macronutrient distribution for points calculation (simplified)
// The 2012 WW system rewarded protein and fiber.
// Let's assume a hypothetical distribution that aligns with the spirit.
// This is a simplification for visualization.
var estimatedProteinCalories = tdee * 0.30; // ~30% protein
var estimatedCarbCalories = tdee * 0.35; // ~35% carbs
var estimatedFatCalories = tdee * 0.25; // ~25% fat
var estimatedFiberCalories = tdee * 0.10; // ~10% fiber (often lower calorie density)
// Approximate points based on macronutrient calories (using WW 2012 logic)
// Protein: 4 cal/g, Carbs: 4 cal/g, Fat: 9 cal/g, Fiber: ~0-2 cal/g (often credited)
// WW 2012 formula components (simplified):
// Points = (Fat grams * 9) + (Carbs grams * 4) – (Fiber grams * 4) + Protein grams
// This is a complex formula, so we'll estimate points contribution based on calorie distribution.
// A simpler approach for visualization: distribute points proportionally to TDEE contribution,
// but slightly favouring protein/fiber for the chart representation.
var proteinPoints = Math.round((estimatedProteinCalories / 4) * 0.8); // Lower points for protein
var carbPoints = Math.round((estimatedCarbCalories / 4) * 1.1); // Standard points for carbs
var fatPoints = Math.round((estimatedFatCalories / 9) * 2.0); // Higher points for fat
var fiberPoints = Math.round((estimatedFiberCalories / 4) * 0.5); // Lower points for fiber (credit)
// Adjust to roughly match dailyPoints total if needed (simplification)
var totalEstimatedPoints = proteinPoints + carbPoints + fatPoints + fiberPoints;
var pointsRatio = dailyPoints / totalEstimatedPoints;
proteinPoints = Math.round(proteinPoints * pointsRatio);
carbPoints = Math.round(carbPoints * pointsRatio);
fatPoints = Math.round(fatPoints * pointsRatio);
fiberPoints = Math.round(fiberPoints * pointsRatio);
// Ensure total doesn't exceed dailyPoints significantly due to rounding
var finalTotalPoints = proteinPoints + carbPoints + fatPoints + fiberPoints;
if (finalTotalPoints > dailyPoints) {
// Simple adjustment: reduce the largest component slightly
if (fatPoints >= carbPoints && fatPoints >= proteinPoints && fatPoints >= fiberPoints) fatPoints -= (finalTotalPoints – dailyPoints);
else if (carbPoints >= proteinPoints && carbPoints >= fiberPoints) carbPoints -= (finalTotalPoints – dailyPoints);
else if (proteinPoints >= fiberPoints) proteinPoints -= (finalTotalPoints – dailyPoints);
else fiberPoints -= (finalTotalPoints – dailyPoints);
}
var labels = ['Protein', 'Carbs', 'Fat', 'Fiber'];
var dataValues = [proteinPoints, carbPoints, fatPoints, fiberPoints];
// Destroy previous chart instance if it exists
if (chartInstance) {
chartInstance.destroy();
}
// Create new chart
chartInstance = new Chart(ctx, {
type: 'bar', // Use bar chart for better comparison
data: {
labels: labels,
datasets: [{
label: 'Estimated Points Contribution',
data: dataValues,
backgroundColor: [
'rgba(0, 74, 153, 0.7)', // Blue for Protein
'rgba(40, 167, 69, 0.7)', // Green for Carbs
'rgba(255, 193, 7, 0.7)', // Yellow for Fat
'rgba(108, 117, 125, 0.7)' // Gray for Fiber
],
borderColor: [
'rgba(0, 74, 153, 1)',
'rgba(40, 167, 69, 1)',
'rgba(255, 193, 7, 1)',
'rgba(108, 117, 125, 1)'
],
borderWidth: 1
}]
},
options: {
responsive: true,
maintainAspectRatio: false,
scales: {
y: {
beginAtZero: true,
title: {
display: true,
text: 'Estimated Points'
}
}
},
plugins: {
legend: {
display: false // Hide legend as labels are on bars
},
title: {
display: true,
text: 'Estimated Points Breakdown by Macronutrient'
}
}
}
});
// Update Table
var tableBody = document.getElementById('pointsTableBody');
tableBody.innerHTML = "; // Clear previous rows
var tableData = [
{ name: 'Protein', points: proteinPoints, contribution: ((proteinPoints / dailyPoints) * 100).toFixed(1) + '%' },
{ name: 'Carbohydrates', points: carbPoints, contribution: ((carbPoints / dailyPoints) * 100).toFixed(1) + '%' },
{ name: 'Fat', points: fatPoints, contribution: ((fatPoints / dailyPoints) * 100).toFixed(1) + '%' },
{ name: 'Fiber', points: fiberPoints, contribution: ((fiberPoints / dailyPoints) * 100).toFixed(1) + '%' }
];
tableData.forEach(function(item) {
var row = tableBody.insertRow();
row.insertCell(0).textContent = item.name;
row.insertCell(1).textContent = item.points === 0 ? '–' : item.points;
row.insertCell(2).textContent = item.contribution;
});
}
function clearChart() {
var ctx = document.getElementById('pointsChart').getContext('2d');
if (chartInstance) {
chartInstance.destroy();
chartInstance = null;
}
// Clear canvas visually
ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
}
function clearTable() {
var tableBody = document.getElementById('pointsTableBody');
tableBody.innerHTML = '
| Protein | — | — |
' +
'
| Carbohydrates | — | — |
' +
'
| Fat | — | — |
' +
'
| Fiber | — | — |
';
}
function resetForm() {
document.getElementById('age').value = '35';
document.getElementById('gender').value = 'female';
document.getElementById('weight').value = '150';
document.getElementById('heightFeet').value = '5';
document.getElementById('heightInches').value = '6';
document.getElementById('activityLevel').value = 'moderately_active';
// Clear errors
document.getElementById('ageError').style.display = 'none';
document.getElementById('weightError').style.display = 'none';
document.getElementById('heightFeetError').style.display = 'none';
document.getElementById('heightInchesError').style.display = 'none';
// Clear results
document.getElementById('primary-result').textContent = '–';
document.getElementById('bmr-result').innerHTML = '
BMR: –';
document.getElementById('tdee-result').innerHTML = '
TDEE: –';
document.getElementById('base-points-result').innerHTML = '
Base Points: –';
clearChart();
clearTable();
}
function copyResults() {
var primaryResult = document.getElementById('primary-result').textContent;
var bmrResult = document.getElementById('bmr-result').textContent;
var tdeeResult = document.getElementById('tdee-result').textContent;
var basePointsResult = document.getElementById('base-points-result').textContent;
var formulaExplanation = document.querySelector('.formula-explanation').textContent.replace('Formula Used:', 'Formula:');
var resultsText = "Weight Watchers Points Allowance (2012) Results:\n\n";
resultsText += primaryResult + "\n";
resultsText += bmrResult + "\n";
resultsText += tdeeResult + "\n";
resultsText += basePointsResult + "\n\n";
resultsText += formulaExplanation + "\n\n";
resultsText += "Key Assumptions:\n";
resultsText += "- Calculation based on 2012 PointsPlus system principles.\n";
resultsText += "- Uses Mifflin-St Jeor equation for BMR.\n";
resultsText += "- Activity multipliers applied for TDEE.\n";
resultsText += "- Estimated calorie-to-point conversion factor used.\n";
// Use a temporary textarea to copy text
var textArea = document.createElement("textarea");
textArea.value = resultsText;
textArea.style.position = "fixed"; // Avoid scrolling to bottom
textArea.style.left = "-9999px";
document.body.appendChild(textArea);
textArea.focus();
textArea.select();
try {
var successful = document.execCommand('copy');
var msg = successful ? 'Results copied to clipboard!' : 'Failed to copy results.';
// Optionally show a temporary message to the user
var tempMessage = document.createElement('div');
tempMessage.textContent = msg;
tempMessage.style.cssText = 'position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%); background-color: #004a99; color: white; padding: 15px; border-radius: 5px; z-index: 1000;';
document.body.appendChild(tempMessage);
setTimeout(function() {
document.body.removeChild(tempMessage);
}, 2000);
} catch (err) {
console.error('Fallback: Oops, unable to copy', err);
}
document.body.removeChild(textArea);
}
// Initial calculation on page load with default values
document.addEventListener('DOMContentLoaded', function() {
calculatePoints();
});
// Add Chart.js library dynamically if not present
if (typeof Chart === 'undefined') {
var script = document.createElement('script');
script.src = 'https://cdn.jsdelivr.net/npm/chart.js@3.7.0/dist/chart.min.js'; // Use a specific version
script.onload = function() {
// Re-run calculation after chart library is loaded
calculatePoints();
};
document.head.appendChild(script);
} else {
// If Chart.js is already loaded, just run the calculation
calculatePoints();
}