Beginner Deadlift Weight Calculator

Beginner Deadlift Weight Calculator: Start Strong & Safely

:root {
–primary-color: #004a99;
–success-color: #28a745;
–background-color: #f8f9fa;
–text-color: #333;
–border-color: #ddd;
–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: 960px;
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: 1.5em;
}
h1 {
font-size: 2.2em;
}
h2 {
font-size: 1.8em;
margin-top: 1.5em;
}
h3 {
font-size: 1.4em;
margin-top: 1.2em;
}
.calculator-section {
background-color: var(–card-background);
padding: 30px;
border-radius: 8px;
box-shadow: var(–shadow);
margin-bottom: 30px;
}
.input-group {
margin-bottom: 20px;
text-align: left;
}
.input-group label {
display: block;
margin-bottom: 8px;
font-weight: bold;
color: var(–primary-color);
}
.input-group input[type=”number”],
.input-group select {
width: calc(100% – 22px);
padding: 12px;
border: 1px solid var(–border-color);
border-radius: 4px;
font-size: 1em;
box-sizing: border-box;
}
.input-group input[type=”number”]:focus,
.input-group select:focus {
border-color: var(–primary-color);
outline: none;
box-shadow: 0 0 0 2px rgba(0, 74, 153, 0.2);
}
.input-group .helper-text {
font-size: 0.85em;
color: #666;
margin-top: 5px;
display: block;
}
.input-group .error-message {
color: #dc3545;
font-size: 0.85em;
margin-top: 5px;
display: none; /* Hidden by default */
}
.input-group .error-message.visible {
display: block;
}
.button-group {
display: flex;
justify-content: space-between;
margin-top: 25px;
gap: 10px;
}
.button-group button {
padding: 12px 20px;
border: none;
border-radius: 4px;
cursor: pointer;
font-size: 1em;
font-weight: bold;
transition: background-color 0.3s ease;
flex: 1;
}
.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;
}
.results-section {
margin-top: 30px;
padding: 25px;
background-color: var(–primary-color);
color: white;
border-radius: 8px;
text-align: center;
box-shadow: var(–shadow);
}
.results-section h3 {
color: white;
margin-bottom: 15px;
}
.primary-result {
font-size: 2.5em;
font-weight: bold;
margin: 10px 0;
display: block;
padding: 10px;
background-color: var(–success-color);
border-radius: 4px;
}
.intermediate-results {
display: flex;
justify-content: space-around;
flex-wrap: wrap;
margin-top: 20px;
gap: 15px;
}
.intermediate-results div {
text-align: center;
padding: 10px;
background-color: rgba(255, 255, 255, 0.15);
border-radius: 4px;
flex: 1;
min-width: 120px;
}
.intermediate-results span {
display: block;
font-size: 1.8em;
font-weight: bold;
}
.formula-explanation {
margin-top: 20px;
font-size: 0.9em;
opacity: 0.8;
}
.copy-button {
background-color: #17a2b8;
color: white;
padding: 10px 15px;
border: none;
border-radius: 4px;
cursor: pointer;
font-size: 0.9em;
margin-top: 15px;
transition: background-color 0.3s ease;
}
.copy-button:hover {
background-color: #138496;
}
.chart-container {
margin-top: 30px;
padding: 25px;
background-color: var(–card-background);
border-radius: 8px;
box-shadow: var(–shadow);
}
.chart-container canvas {
width: 100% !important;
height: auto !important;
}
.chart-caption {
text-align: center;
font-size: 0.9em;
color: #666;
margin-top: 10px;
}
.table-container {
margin-top: 30px;
overflow-x: auto;
}
table {
width: 100%;
border-collapse: collapse;
border-radius: 8px;
overflow: hidden;
box-shadow: var(–shadow);
}
thead {
background-color: var(–primary-color);
color: white;
}
th, td {
padding: 12px 15px;
text-align: left;
border-bottom: 1px solid var(–border-color);
}
th {
font-weight: bold;
}
tbody tr:nth-child(even) {
background-color: #f2f2f2;
}
tbody tr:hover {
background-color: #e9ecef;
}
.table-caption {
text-align: center;
font-size: 0.9em;
color: #666;
margin-bottom: 10px;
}
.article-content {
margin-top: 40px;
background-color: var(–card-background);
padding: 30px;
border-radius: 8px;
box-shadow: var(–shadow);
}
.article-content p, .article-content ul, .article-content ol {
margin-bottom: 1.5em;
}
.article-content ul, .article-content ol {
padding-left: 25px;
}
.article-content li {
margin-bottom: 0.8em;
}
.article-content a {
color: var(–primary-color);
text-decoration: none;
}
.article-content a:hover {
text-decoration: underline;
}
.faq-section {
margin-top: 30px;
}
.faq-item {
margin-bottom: 15px;
padding: 15px;
background-color: #f8f9fa;
border-radius: 4px;
border-left: 4px solid var(–primary-color);
}
.faq-item h4 {
margin: 0 0 5px 0;
color: var(–primary-color);
font-size: 1.1em;
text-align: left;
}
.faq-item p {
margin: 0;
font-size: 0.95em;
}
.related-links {
margin-top: 30px;
padding: 20px;
background-color: var(–card-background);
border-radius: 8px;
box-shadow: var(–shadow);
}
.related-links ul {
list-style: none;
padding: 0;
}
.related-links li {
margin-bottom: 10px;
}
.related-links a {
font-weight: bold;
}
.related-links p {
font-size: 0.9em;
color: #666;
margin-top: 5px;
}
.highlight {
background-color: var(–success-color);
color: white;
padding: 2px 5px;
border-radius: 3px;
font-weight: bold;
}
.subtle-highlight {
background-color: rgba(0, 74, 153, 0.1);
padding: 2px 5px;
border-radius: 3px;
}
@media (max-width: 768px) {
.container {
margin: 10px;
padding: 15px;
}
h1 {
font-size: 1.8em;
}
h2 {
font-size: 1.5em;
}
.button-group {
flex-direction: column;
}
.intermediate-results {
flex-direction: column;
align-items: center;
}
}

Beginner Deadlift Weight Calculator

Safely determine your starting deadlift weight and understand your progression.

Deadlift Starting Weight Calculator

Enter your current bodyweight in kilograms.

Male
Female

Select your gender for more accurate estimations.

Beginner (0-6 months training)
Intermediate (6-24 months training)

Choose your training experience.


Your Estimated Beginner Deadlift Weight

— kg


1RM Estimate (kg)

Working Weight (kg)

Rep Range

Formula: Based on bodyweight, gender, and experience, this calculator uses established strength standards and regression formulas to estimate a safe starting deadlift weight. For beginners, it often starts around 50-70% of estimated 1RM.

Deadlift Progression Over Time

Estimated Deadlift Weight Progression (Weekly)
Beginner Deadlift Strength Standards (Estimated)
Category Bodyweight (kg) Beginner Male (kg) Beginner Female (kg)
Lightweight 50-70 70-90 45-60
Middleweight 70-90 90-120 60-85
Heavyweight 90+ 120+ 85+

What is the Beginner Deadlift Weight Calculator?

The beginner deadlift weight calculator is a specialized tool designed to help individuals new to strength training estimate a safe and effective starting weight for the deadlift exercise. The deadlift is a fundamental compound movement that works multiple muscle groups simultaneously, including the legs, back, and core. However, due to its demanding nature, starting with an inappropriate weight can lead to injury or hinder progress. This calculator provides a data-driven starting point, taking into account key personal factors to ensure a balanced approach to building strength.

Who should use it? Anyone embarking on a deadlift program for the first time, or those returning after a significant break, should consider using this calculator. It’s particularly useful for individuals who may not have access to a qualified coach or are training independently. It helps demystify the process of choosing a starting load, moving beyond guesswork.

Common misconceptions: A frequent misunderstanding is that beginners should immediately try to lift as much as possible. This is dangerous and counterproductive. Another misconception is that strength standards are absolute targets; they are merely guidelines. This calculator aims to provide a *starting point*, not a ceiling.

Beginner Deadlift Weight Calculator Formula and Mathematical Explanation

The calculation for a beginner deadlift weight is not a single, universally agreed-upon formula but rather an estimation based on established strength principles and regression models. Our calculator uses a multi-factor approach:

  1. Base Weight Estimation: It starts by considering bodyweight, as heavier individuals generally have the potential to lift more.
  2. Gender Adjustment: Strength potential often differs between genders due to physiological factors. Adjustments are made accordingly.
  3. Experience Factor: Beginners require a more conservative starting point to allow for technique acquisition and adaptation.
  4. 1RM Estimation: Using a simplified regression formula (e.g., based on a few reps at a submaximal weight, or general population standards), an estimated One Rep Max (1RM) is calculated. A common approach for beginners is to estimate 1RM from a set of 5 reps (e.g., Weight * 2.25).
  5. Working Weight Calculation: The actual starting deadlift weight is then derived as a percentage of the estimated 1RM. For true beginners, this is often set between 50% and 70% of the estimated 1RM to prioritize form and safety.

Variable Explanations:

Variable Meaning Unit Typical Range
Bodyweight The individual’s total body mass. kg 30 – 200+
Gender Biological sex, influencing strength potential. Category Male, Female
Experience Level Duration and consistency of strength training. Category Beginner, Intermediate
Estimated 1RM The maximum weight the individual could theoretically lift for one repetition. kg Varies widely
Suggested Working Weight The recommended weight for the initial training sets. kg 50-70% of Estimated 1RM
Suggested Rep Range Number of repetitions to perform per set. Reps 3-6 for beginners

The beginner deadlift weight calculator aims to provide a safe starting point, prioritizing technique over maximal load. This approach is crucial for long-term progress and injury prevention.

Practical Examples (Real-World Use Cases)

Let’s illustrate how the beginner deadlift weight calculator works with two distinct scenarios:

Example 1: Sarah, a new gym-goer

  • Inputs: Bodyweight = 60 kg, Gender = Female, Experience Level = Beginner
  • Calculator Output:
    • Estimated 1RM: 75 kg
    • Suggested Working Weight: 45 kg
    • Suggested Rep Range: 5 reps
  • Interpretation: Sarah is advised to start her deadlift training with approximately 45 kg for sets of 5 repetitions. This weight allows her to focus on learning the correct form without being overwhelmed by the load. As she progresses, she can gradually increase this weight.

Example 2: Mark, returning to the gym after a long break

  • Inputs: Bodyweight = 85 kg, Gender = Male, Experience Level = Beginner (due to long layoff)
  • Calculator Output:
    • Estimated 1RM: 130 kg
    • Suggested Working Weight: 78 kg
    • Suggested Rep Range: 5 reps
  • Interpretation: Mark, despite potentially having prior strength, is treated as a beginner. The calculator suggests starting around 78 kg for sets of 5 reps. This ensures he re-establishes proper technique and allows his connective tissues to adapt before attempting heavier loads. This is a key aspect of safe strength training progression.

These examples highlight how the beginner deadlift weight calculator tailors recommendations based on individual characteristics, promoting a safer and more effective start to deadlift training.

How to Use This Beginner Deadlift Weight Calculator

Using the beginner deadlift weight calculator is straightforward. Follow these steps:

  1. Enter Your Bodyweight: Input your current weight in kilograms into the ‘Your Bodyweight (kg)’ field.
  2. Select Your Gender: Choose ‘Male’ or ‘Female’ from the dropdown menu.
  3. Indicate Experience Level: Select ‘Beginner’ if you have less than 6 months of consistent strength training experience, or ‘Intermediate’ if you have more. For this calculator, we focus on the ‘Beginner’ setting.
  4. Click ‘Calculate Starting Weight’: The calculator will process your inputs.

How to read results:

  • Primary Result (Suggested Working Weight): This is the main recommendation – the weight you should aim to lift for your working sets.
  • Estimated 1RM: This is a theoretical maximum weight for one lift, used internally for calculation. Don’t attempt this weight initially.
  • Suggested Rep Range: Typically 3-6 reps for beginners, focusing on controlled movement.

Decision-making guidance: Always prioritize proper form over the calculated weight. If the suggested weight feels too heavy to maintain good technique, reduce it. Conversely, if it feels exceptionally light and you can easily perform more reps with perfect form, consider a slight increase for the next session, but always err on the side of caution. This calculator is a guide, not a rigid rule. Consult with a qualified personal trainer for personalized form checks.

Key Factors That Affect Beginner Deadlift Weight Results

While the beginner deadlift weight calculator provides a solid estimate, several factors can influence the actual weight you should use and your progression:

  1. Technique and Form: This is paramount. Poor form, even with a lighter weight, increases injury risk. Perfecting technique should always be the priority, potentially requiring a lighter weight than calculated.
  2. Mobility and Flexibility: Limited hip, ankle, or thoracic spine mobility can affect your ability to achieve a safe starting position, potentially necessitating lighter loads until mobility improves.
  3. Muscle Imbalances: Pre-existing weaknesses or tightness in certain muscle groups (e.g., weak glutes, tight hamstrings) can impact deadlift performance and require specific attention, possibly influencing starting weight.
  4. Previous Injuries: Any history of back, knee, or hip injuries requires extra caution. Consult a healthcare professional or physical therapist before starting, and use a significantly lighter weight than calculated.
  5. Training Age and Consistency: Even within the ‘beginner’ category, someone training 3 times a week consistently will adapt faster than someone training sporadically. The calculator provides a general starting point.
  6. Recovery and Nutrition: Adequate sleep, nutrition (especially protein), and stress management are crucial for muscle repair and strength gains. Poor recovery can limit your ability to handle even the calculated starting weight effectively.
  7. Grip Strength: For many beginners, grip strength can be a limiting factor before leg or back strength. You might need to use straps or start with a weight your legs/back can handle, even if your grip fails.
  8. Equipment: The type of barbell (e.g., standard Olympic vs. powerlifting bar) and the use of lifting straps can influence how much weight feels manageable.

Understanding these factors helps refine the recommendations from the beginner deadlift weight calculator for a truly personalized and safe training experience. Consider these elements when deciding on your final starting weight and progression plan. For more on building foundational strength, explore progressive overload principles.

Frequently Asked Questions (FAQ)

Q1: What is the most important factor when starting deadlifts?

A: Technique and form are the most critical factors. Prioritize learning the correct movement pattern to prevent injury and build a solid foundation for future strength gains. The calculated weight is secondary to safe execution.

Q2: Can I use this calculator if I’m not a complete beginner?

A: This calculator is specifically optimized for true beginners (0-6 months). If you have more experience, you might find intermediate or advanced calculators more suitable, or consult established strength standards.

Q3: What if the calculated weight feels too easy?

A: If you can perform the suggested reps with perfect form and it feels very light, you might be able to slightly increase the weight. However, err on the side of caution. It’s better to start too light and progress than too heavy and risk injury. Consider adding weight in subsequent workouts.

Q4: What if the calculated weight feels too heavy?

A: Reduce the weight. Focus on mastering the movement pattern with lighter loads. Your primary goal as a beginner is to learn the deadlift safely. Consult a coach if you’re unsure about form.

Q5: How often should I deadlift as a beginner?

A: For most beginners, deadlifting once or twice a week is sufficient. This allows adequate recovery time for the muscles and nervous system. Ensure you have rest days between sessions.

Q6: What are good rep ranges for beginner deadlifts?

A: A rep range of 3-6 repetitions per set is generally recommended for beginners. This range balances the need for sufficient practice to learn form with the intensity required for strength development, while minimizing fatigue.

Q7: Should I use weightlifting straps?

A: As a beginner, it’s generally recommended to avoid straps initially. Developing your natural grip strength is important. Use straps only if grip is a significant limiting factor preventing you from training your legs and back effectively with appropriate weight.

Q8: How quickly can I expect to progress?

A: Beginner progress can be rapid, often referred to as “newbie gains.” You might be able to add weight weekly or bi-weekly initially. However, progression will slow down over time. Focus on consistent training and technique.

Q9: Does the calculator account for different deadlift variations (e.g., Sumo vs. Conventional)?

A: This calculator provides a general starting point primarily for the conventional deadlift. While the principles are similar, specific starting weights might vary slightly for variations like the sumo deadlift. Focus on mastering one variation first.

© 2023 Your Fitness Website. All rights reserved.

var chartInstance = null; // Global variable to hold chart instance

function validateInput(id, min, max, errorMessageId, isRequired = true) {
var inputElement = document.getElementById(id);
var errorElement = document.getElementById(errorMessageId);
var value = parseFloat(inputElement.value);
var isValid = true;

errorElement.innerText = ”;
errorElement.classList.remove(‘visible’);
inputElement.style.borderColor = ‘#ccc’;

if (isRequired && (inputElement.value === ” || isNaN(value))) {
errorElement.innerText = ‘This field is required.’;
errorElement.classList.add(‘visible’);
inputElement.style.borderColor = ‘#dc3545’;
return false;
}
if (!isNaN(value)) {
if (value max) {
errorElement.innerText = ‘Value cannot be greater than ‘ + max + ‘.’;
errorElement.classList.add(‘visible’);
inputElement.style.borderColor = ‘#dc3545’;
isValid = false;
}
}
return isValid;
}

function calculateDeadlift() {
var bodyweight = parseFloat(document.getElementById(‘bodyweight’).value);
var gender = document.getElementById(‘gender’).value;
var experienceLevel = document.getElementById(‘experienceLevel’).value;
var resultsSection = document.getElementById(‘resultsSection’);
var primaryResult = document.getElementById(‘primaryResult’);
var estimated1RM = document.getElementById(‘estimated1RM’);
var suggestedWorkingWeight = document.getElementById(‘suggestedWorkingWeight’);
var suggestedRepRange = document.getElementById(‘suggestedRepRange’);

var isValid = true;
isValid = validateInput(‘bodyweight’, 30, 300, ‘bodyweightError’) && isValid;
// Gender and experienceLevel are selects, validation is less critical here unless empty is possible

if (!isValid) {
resultsSection.style.display = ‘none’;
return;
}

var estimated1RMValue;
var workingWeightMultiplier;
var repRange = “5 reps”;

// Simplified estimation logic for beginners
if (experienceLevel === ‘beginner’) {
var baseMultiplier = 1.5; // General starting point multiplier for bodyweight
if (gender === ‘male’) {
baseMultiplier = 1.7;
} else { // female
baseMultiplier = 1.3;
}
estimated1RMValue = bodyweight * baseMultiplier;
workingWeightMultiplier = 0.60; // Start around 60% of estimated 1RM for beginners
} else { // Intermediate – though this calculator is focused on beginners
var baseMultiplier = 2.0;
if (gender === ‘male’) {
baseMultiplier = 2.2;
} else { // female
baseMultiplier = 1.8;
}
estimated1RMValue = bodyweight * baseMultiplier;
workingWeightMultiplier = 0.75; // Higher starting point for intermediate
repRange = “3-5 reps”;
}

// Ensure working weight is not excessively low for very light individuals
var calculatedWorkingWeight = estimated1RMValue * workingWeightMultiplier;
if (calculatedWorkingWeight < 20) { // Minimum practical weight
calculatedWorkingWeight = 20;
}

// Round to nearest 2.5kg for practical lifting
var roundedWorkingWeight = Math.round(calculatedWorkingWeight / 2.5) * 2.5;
var rounded1RM = Math.round(estimated1RMValue / 2.5) * 2.5;

primaryResult.innerText = roundedWorkingWeight.toFixed(0) + ' kg';
estimated1RM.innerText = rounded1RM.toFixed(0);
suggestedWorkingWeight.innerText = roundedWorkingWeight.toFixed(0);
suggestedRepRange.innerText = repRange;

resultsSection.style.display = 'block';
updateChart(roundedWorkingWeight);
}

function resetCalculator() {
document.getElementById('bodyweight').value = '70';
document.getElementById('gender').value = 'male';
document.getElementById('experienceLevel').value = 'beginner';
document.getElementById('resultsSection').style.display = 'none';
// Clear errors
document.getElementById('bodyweightError').innerText = '';
document.getElementById('bodyweightError').classList.remove('visible');
document.getElementById('bodyweight').style.borderColor = '#ccc';
if (chartInstance) {
chartInstance.destroy();
chartInstance = null;
}
// Reset chart to default state if needed
drawInitialChart();
}

function copyResults() {
var primaryResultText = document.getElementById('primaryResult').innerText;
var estimated1RMText = document.getElementById('estimated1RM').innerText;
var suggestedWorkingWeightText = document.getElementById('suggestedWorkingWeight').innerText;
var suggestedRepRangeText = document.getElementById('suggestedRepRange').innerText;
var bodyweight = document.getElementById('bodyweight').value;
var gender = document.getElementById('gender').value;
var experience = document.getElementById('experienceLevel').value;

var textToCopy = "Beginner Deadlift Calculator Results:\n\n" +
"Inputs:\n" +
"- Bodyweight: " + bodyweight + " kg\n" +
"- Gender: " + gender + "\n" +
"- Experience: " + experience + "\n\n" +
"Results:\n" +
"- Suggested Working Weight: " + primaryResultText + "\n" +
"- Estimated 1RM: " + estimated1RMText + " kg\n" +
"- Suggested Rep Range: " + suggestedRepRangeText + "\n\n" +
"Assumptions: Calculations are estimates for safe starting points. Always prioritize form.";

// Use a temporary textarea to copy text
var textArea = document.createElement("textarea");
textArea.value = textToCopy;
textArea.style.position = "fixed";
textArea.style.left = "-9999px";
document.body.appendChild(textArea);
textArea.focus();
textArea.select();

try {
var successful = document.execCommand('copy');
var msg = successful ? 'Results copied!' : 'Copying failed';
// Optionally show a temporary message to the user
var tempMessage = document.createElement('div');
tempMessage.innerText = msg;
tempMessage.style.position = 'fixed';
tempMessage.style.bottom = '10px';
tempMessage.style.left = '50%';
tempMessage.style.transform = 'translateX(-50%)';
tempMessage.style.backgroundColor = '#004a99';
tempMessage.style.color = 'white';
tempMessage.style.padding = '10px 20px';
tempMessage.style.borderRadius = '5px';
tempMessage.style.zIndex = '1000';
document.body.appendChild(tempMessage);
setTimeout(function() {
document.body.removeChild(tempMessage);
}, 2000);
} catch (err) {
console.error('Fallback: Oops, unable to copy', err);
// Optionally show a fallback message
}

document.body.removeChild(textArea);
}

function drawInitialChart() {
var ctx = document.getElementById('deadliftChart').getContext('2d');
// Clear previous chart if it exists
if (chartInstance) {
chartInstance.destroy();
}
chartInstance = new Chart(ctx, {
type: 'line',
data: {
labels: ['Week 1', 'Week 2', 'Week 3', 'Week 4', 'Week 5', 'Week 6'],
datasets: [{
label: 'Estimated Working Weight (kg)',
data: [45, 47.5, 50, 52.5, 55, 57.5], // Default beginner progression
borderColor: 'var(–primary-color)',
backgroundColor: 'rgba(0, 74, 153, 0.1)',
fill: true,
tension: 0.1
}, {
label: 'Estimated 1RM (kg)',
data: [75, 78, 81, 84, 87, 90], // Corresponding 1RM estimates
borderColor: 'var(–success-color)',
backgroundColor: 'rgba(40, 167, 69, 0.1)',
fill: true,
tension: 0.1
}]
},
options: {
responsive: true,
maintainAspectRatio: false,
scales: {
y: {
beginAtZero: true,
title: {
display: true,
text: 'Weight (kg)'
}
},
x: {
title: {
display: true,
text: 'Training Week'
}
}
},
plugins: {
legend: {
position: 'top',
},
title: {
display: true,
text: 'Projected Deadlift Progression'
}
}
}
});
}

function updateChart(currentWorkingWeight) {
var ctx = document.getElementById('deadliftChart').getContext('2d');
// Clear previous chart if it exists
if (chartInstance) {
chartInstance.destroy();
}

var labels = [];
var workingWeights = [];
var oneRMs = [];
var weeks = 6; // Project for 6 weeks
var incrementPerWeek = currentWorkingWeight * 0.05; // Assume 5% increase per week for simplicity
var estimated1RMBase = parseFloat(document.getElementById('estimated1RM').innerText);

for (var i = 0; i < weeks; i++) {
labels.push('Week ' + (i + 1));
var weekWorkingWeight = currentWorkingWeight + (incrementPerWeek * i);
workingWeights.push(parseFloat(weekWorkingWeight.toFixed(1)));

// Estimate 1RM based on the working weight and rep range (approx 5 reps)
// Using a simplified formula: 1RM ≈ Weight * (1 + Reps/30)
var estimatedWeek1RM = weekWorkingWeight * (1 + 5 / 30);
oneRMs.push(parseFloat(estimatedWeek1RM.toFixed(1)));
}

chartInstance = new Chart(ctx, {
type: 'line',
data: {
labels: labels,
datasets: [{
label: 'Estimated Working Weight (kg)',
data: workingWeights,
borderColor: 'var(–primary-color)',
backgroundColor: 'rgba(0, 74, 153, 0.1)',
fill: true,
tension: 0.1
}, {
label: 'Estimated 1RM (kg)',
data: oneRMs,
borderColor: 'var(–success-color)',
backgroundColor: 'rgba(40, 167, 69, 0.1)',
fill: true,
tension: 0.1
}]
},
options: {
responsive: true,
maintainAspectRatio: false,
scales: {
y: {
beginAtZero: true,
title: {
display: true,
text: 'Weight (kg)'
}
},
x: {
title: {
display: true,
text: 'Training Week'
}
}
},
plugins: {
legend: {
position: 'top',
},
title: {
display: true,
text: 'Projected Deadlift Progression'
}
}
}
});
}

// Initial chart draw on page load
window.onload = function() {
drawInitialChart();
// Set default values for better user experience
document.getElementById('bodyweight').value = '70';
document.getElementById('gender').value = 'male';
document.getElementById('experienceLevel').value = 'beginner';
};

Leave a Comment