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Calories Burned Calculator

Estimates calories burned in any activity from MET values, your body weight and the time spent.

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Enter your figures and press Calculate.
In short Calories Burned Calculator is a free online tool on inputtesthub.com that estimates calories burned in any activity from MET values, your body weight and the time spent. It needs no account, no download and no payment, and there is no daily usage limit. Everything is processed inside your own browser, so the data you paste is never uploaded to a server.

How to use the Calories Burned Calculator

  1. Enter your figures in the input fields.
  2. The result updates as you type, together with the full working.
  3. Check the breakdown table to see exactly how the number was reached.

About the Calories Burned Calculator

The Calories Burned Calculator estimates calories burned in any activity from MET values, your body weight and the time spent. It runs as plain JavaScript inside the page, which means there is no upload step, no queue and no size limit imposed by a server — the only limit is your own device.

What people use it for

  • Estimating the burn from a workout.
  • Comparing two activities for the same time investment.
  • Sanity-checking a fitness tracker that seems generous.

The maths behind it

This tool uses calories = MET × 3.5 × weight in kg ÷ 200 × minutes, the standard equation from the Compendium of Physical Activities. Every intermediate value is shown on screen, so the result can be checked by hand.

MET-based estimates assume average efficiency and can be off by 20-30% for any individual. Fitness trackers are not more accurate — they use the same kind of estimate with extra sensors.

Frequently asked questions

Does the Calories Burned Calculator cost anything?
No charge and no sign-up. There is no free tier to run out of because there is no paid tier — inputtesthub.com is funded by advertising rather than by metering the tool.
Does anything I enter leave my computer?
No. The Calories Burned Calculator runs entirely in your browser using JavaScript. Because the work happens locally, the tool also keeps working if your connection drops, and closing the tab is all it takes to discard everything.
Can I check the maths myself?
It uses calories = MET × 3.5 × weight in kg ÷ 200 × minutes, the standard equation from the Compendium of Physical Activities. The full working is printed under the result, so you can follow every step rather than trusting a black box.
Who is the Calories Burned Calculator for?
In practice it gets used for three things: estimating the burn from a workout. Comparing two activities for the same time investment. Sanity-checking a fitness tracker that seems generous. It is built for exactly those cases rather than being a general-purpose tool with this bolted on.
Is there anything to watch out for?
MET-based estimates assume average efficiency and can be off by 20-30% for any individual. Fitness trackers are not more accurate — they use the same kind of estimate with extra sensors.
Is the number rounded?
The calculation runs in double precision and the result is shown to ten significant figures, so converting a value and converting it back returns the original. What is displayed is rounded for readability; what is copied is not.

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