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TDEE Calculator

Estimates Total Daily Energy Expenditure from your BMR and activity level, with calorie targets for cutting and bulking.

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Enter your figures and press Calculate.
In short TDEE Calculator is a free online tool on inputtesthub.com that estimates Total Daily Energy Expenditure from your BMR and activity level, with calorie targets for cutting and bulking. 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 TDEE 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 TDEE Calculator

The TDEE Calculator estimates Total Daily Energy Expenditure from your BMR and activity level, with calorie targets for cutting and bulking. 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

  • Setting maintenance calories before a cut or a bulk.
  • Understanding why the same diet works differently for two people.
  • Checking whether an app's calorie target is sensible.

The maths behind it

This tool uses TDEE = BMR × activity multiplier, where BMR comes from Mifflin-St Jeor and the multiplier ranges from 1.2 for sedentary to 1.9 for very active. Every intermediate value is shown on screen, so the result can be checked by hand.

Frequently asked questions

Are there any usage caps on the TDEE Calculator?
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.
Is my data uploaded anywhere?
No. The TDEE 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 TDEE = BMR × activity multiplier, where BMR comes from Mifflin-St Jeor and the multiplier ranges from 1.2 for sedentary to 1.9 for very active. The full working is printed under the result, so you can follow every step rather than trusting a black box.
What problem does the TDEE Calculator solve?
In practice it gets used for three things: setting maintenance calories before a cut or a bulk. Understanding why the same diet works differently for two people. Checking whether an app's calorie target is sensible. It is built for exactly those cases rather than being a general-purpose tool with this bolted on.
Can I rely on this for exact work?
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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