Estimate calories burned for any activity from MET value, body weight, and duration in your browser. A general estimate, not medical advice.
Calories Burned Calculator Online
Estimate calories burned for any activity from MET value, body weight, and duration in your browser. A general estimate, not medical advice.
The Calories Burned Calculator runs entirely in your browser. Your weight, activity, and duration never leave your device and nothing is uploaded to ArrayKit. This tool gives a general estimate, not medical advice.
Calories Burned Calculator estimates how many calories an activity burns using the standard MET (Metabolic Equivalent of Task) formula: calories = MET × 3.5 × weight (kg) ÷ 200 × minutes. Pick an activity from the built-in MET table — walking, running, cycling, swimming, weight training, and more — or enter a custom MET value for anything not listed, then add your body weight and workout duration in either metric or US units. The result updates instantly as you adjust any field, so you can compare how intensity, weight, or time change the total. It is handy for planning a workout, logging exercise, or comparing activities before a run or gym session. This is a general estimate from a standard formula, not medical advice. Everything runs locally in your browser — your weight and workout details are never uploaded.
Features
Built-in MET table covering walking, running, cycling, swimming, weight training, and more
Custom MET input for any activity not in the table
Metric (kg) and US (lb) unit toggle
Instant results as you adjust activity, weight, or duration
Copy a plain-text summary of the activity, inputs, and calories burned
Clear error message when weight, duration or MET is zero, negative or not a number
Uses the standard MET formula: MET × 3.5 × weight (kg) ÷ 200 × minutes
Runs entirely in your browser — no workout data is uploaded
How to use the Calories Burned Calculator
Choose Metric or US units
Pick an activity from the MET table, or toggle Custom MET and enter your own value
Enter your body weight and workout duration in minutes
Read the estimated calories burned and copy the summary if needed
Example
Input
running 30 min, 70 kg
Output
Burned: ~360 cal
MET 9.8 (running, 6 mph) × 3.5 × 70 kg ÷ 200 × 30 minutes ≈ 360 calories.
Common errors & troubleshooting
Result seems too high or too low compared to a fitness tracker. — The MET formula gives a general population estimate. Fitness trackers use heart rate and personal calibration, so results will differ — treat the calculator's number as a ballpark, not an exact reading.
Weight entered in the wrong unit gives an unrealistic total. — Check the Metric/US toggle matches the number you typed — 70 kg and 70 lb produce very different calorie totals.
A custom MET value shows an error. — Enter a MET value greater than 0 (most activities fall between 1 and 15). Zero or a negative value shows the error; an empty field just shows no result.
An error message appears instead of the calories. — Weight, duration and MET must all be greater than 0. A 0-minute workout, a 0 kg or 0 lb weight or a negative number shows the error instead of a result; an empty field shows nothing until you fill it in.
Frequently asked questions
How does the Calories Burned Calculator estimate calories?
It uses the standard MET (Metabolic Equivalent of Task) formula: calories = MET × 3.5 × weight in kilograms ÷ 200 × minutes. Each activity in the table has a published MET value representing its exercise intensity.
What is a MET value?
MET stands for Metabolic Equivalent of Task — a measure of how much energy an activity uses relative to resting. A MET of 1 is roughly your resting metabolic rate; running at MET 9.8 burns about 9.8 times as much energy as sitting still.
Can I calculate calories burned for an activity that isn't listed?
Yes. Turn on Custom MET and enter the MET value for your activity from a published compendium, then the Calories Burned Calculator applies the same formula using your weight and duration.
Does the Calories Burned Calculator work in pounds as well as kilograms?
Yes. Switch the unit toggle to US to enter your weight in pounds — it is converted to kilograms internally before the MET formula is applied.
Is the Calories Burned Calculator accurate enough to plan my diet?
It gives a general estimate using a standard exercise-physiology formula, not medical advice. Actual calories burned vary with fitness level, effort, and individual metabolism, so use it as a guide and talk to a professional for personalized numbers.
Does the Calories Burned Calculator upload my weight or workout data?
No. All calculations run locally in your browser. The weight, duration, and activity you enter are never uploaded to ArrayKit.
Related tools
Calorie Calculator — Estimate daily calories to maintain, lose or gain weight from your stats.
TDEE Calculator — Estimate total daily energy expenditure from BMR and activity level.
Pace Calculator — Calculate running pace, time or distance and convert between pace units.
BMR Calculator — Estimate your basal metabolic rate — the calories your body burns at rest.