Calories Burned Calculator
Free calories burned calculator. Pick an activity, enter your weight and time to estimate calories burned using MET values. For running, cycling, swimming, HIIT and more.
About This Free Online Calories Burned Calculator
Our free calories burned calculator estimates the energy you burn during exercise using MET (metabolic equivalent) values. Choose your activity, enter your body weight and how long you exercised, and the tool returns the calories burned, the burn rate per minute, and the energy in kilojoules. Walking, running, cycling, swimming, weight lifting, HIIT, yoga, jumping rope, dancing and tennis are all built in. The MET formula is calories = MET × weight in kg × time in hours. Everything runs in your browser — instant, private, no signup.
Features of Our Calories Burned Calculator
- Calories from activity, weight and duration
- 12 built-in activities with standard MET values
- Burn rate per minute and energy in kilojoules
- Works for walking, running, cycling, swimming, HIIT and more
- 100% client-side and private — instant results, no signup
How to Use the Calories Burned Calculator
Using this tool is simple and requires no signup or registration. Follow these steps:
- Pick your activity.
- Enter your body weight in pounds.
- Enter the duration in minutes.
- Read off the calories burned.
Frequently Asked Questions About Calories Burned Calculator
How are exercise calories calculated?
The calculator uses the MET formula: calories = MET × weight in kg × time in hours. MET (metabolic equivalent) is a standard value for each activity — running at 6 mph is about 9.8 MET, brisk walking 5.0, and so on. Your weight is converted from pounds to kilograms first.
What is a MET value?
A MET is the ratio of your working metabolic rate to your resting rate. 1 MET is sitting still; an activity at 5 MET burns about five times as many calories per minute as resting. The compendium of physical activities defines the MET used for each option here.
Are the calorie estimates accurate?
They are a good population average. Real burn varies with fitness level, terrain, intensity and body composition, so treat the number as an estimate. For most people the error is within 10–20%.
Why does weight matter for calories?
A heavier person does more work to move their body through the same activity, so they burn more calories. The formula scales the result directly with body weight, which is why the calculator asks for it.
Is this calories burned calculator free?
Yes, completely free with no signup. All maths runs in your browser — nothing is uploaded or tracked.
Why Choose Text Toolbox?
Text Toolbox provides free, private, and instant online text tools. Unlike other text utility websites that require signup accounts or send your data to servers, all our tools process your text entirely in your browser. This means your content never leaves your device — we cannot see it, store it, or share it. Our tools are fast, lightweight, and work on any device with a modern web browser.