Exercise Calculator

Calories Burned Exercise Calculator

Estimate the energy expenditure of your workout based on MET values.

Walking (Moderate Pace) Walking (Brisk – 3.5 mph) Running (Jogging – 5 mph) Running (Fast – 7 mph) Bicycling (Moderate – 12-14 mph) Bicycling (Vigorous – 14-16 mph) Swimming (Laps, light/moderate) Swimming (Laps, vigorous) Weight Lifting (Light/Moderate) Weight Lifting (Vigorous) Yoga / Stretching HIIT / Circuit Training

Estimated Energy Burned 0 kcal

How to Use the Exercise Calculator

Calculating the number of calories burned during physical activity is a crucial part of managing weight and optimizing fitness performance. Our calculator uses the MET (Metabolic Equivalent of Task) system to provide an accurate estimation based on your body weight and the intensity of the specific exercise.

What is a MET Value?

A MET is a unit used to estimate the amount of oxygen used by the body during physical activity.

• 1 MET: The energy you spend sitting quietly at rest.
• 3-6 METs: Moderate-intensity activities (like brisk walking).
• >6 METs: Vigorous-intensity activities (like running or competitive sports).

The Science Behind the Calculation

The standard formula for calculating calories burned per minute is:

Calories = (MET × Body Weight in kg × 3.5) ÷ 200

Our calculator simplifies this by multiplying the MET value by your weight (kg) and the fraction of an hour spent exercising (Duration / 60), which provides a reliable estimate for total energy expenditure.

Example Calculation

If a person weighs 80 kg and goes for a 30-minute run at a 5 mph pace (MET value of 8.0):

1. Weight: 80 kg
2. MET: 8.0
3. Duration: 0.5 hours (30/60)
4. Calculation: 8.0 × 80 × 0.5 = 320 Calories Burned

Factors That Influence Calorie Burn

While this calculator provides a high-quality estimate, several individual factors can influence your actual results:

• Basal Metabolic Rate (BMR): Your age and sex influence how many calories you burn naturally.
• Muscle Mass: Muscle tissue burns more calories than fat, even at rest.
• Environmental Conditions: Exercising in extreme heat or cold can increase energy expenditure.
• Fitness Level: As you become more fit, your body often becomes more efficient, potentially burning fewer calories for the same intensity.

function calculateCalories() { var weight = parseFloat(document.getElementById('weightInput').value); var duration = parseFloat(document.getElementById('durationInput').value); var metValue = parseFloat(document.getElementById('activityType').value); var resultArea = document.getElementById('resultArea'); var calorieOutput = document.getElementById('calorieOutput'); var summaryText = document.getElementById('summaryText'); if (isNaN(weight) || weight <= 0) { alert('Please enter a valid weight in kilograms.'); return; } if (isNaN(duration) || duration <= 0) { alert('Please enter a valid duration in minutes.'); return; } // Calculation: Calories = (MET * Weight in kg * Duration in minutes) / 60 // This is a standard approximation of the MET formula var totalBurned = (metValue * weight * duration) / 60; calorieOutput.innerHTML = Math.round(totalBurned).toLocaleString(); var activityName = document.getElementById('activityType').options[document.getElementById('activityType').selectedIndex].text; summaryText.innerHTML = "You burned approximately " + Math.round(totalBurned) + " calories performing " + activityName + " for " + duration + " minutes."; resultArea.style.display = 'block'; resultArea.scrollIntoView({ behavior: 'smooth', block: 'nearest' }); }