ForgeByte/Fat2Fit
Fat2Fit · Free tool

TDEE calculator

Estimate how many calories you burn in a day, from your resting needs up through each activity level.

–BMR (at rest)
–TDEE (calories / day)
Activity levelCalories / day

General estimate for adults, not medical advice. Talk to a doctor or dietitian if you are pregnant, have a medical condition, or have a history of disordered eating.

Hit your numbers without the math

Fat2Fit is an AI fitness coach that runs on your iPhone. Point at a plate — it names every food and totals your calories & macros in seconds. No cloud. No ads. Fat2Fit is free: every feature, for everyone.

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Questions

What is TDEE?

TDEE stands for total daily energy expenditure. It is an estimate of all the calories you burn in a day, including resting needs, daily movement, and exercise.

What is the difference between BMR and TDEE?

BMR is the energy your body uses at complete rest. TDEE is BMR multiplied by an activity factor, so it is always higher than BMR.

Which formula does this use?

It uses the Mifflin-St Jeor equation for BMR and standard activity multipliers from 1.2 for mostly sitting to 1.9 for very hard training or a physical job.

Is my data saved or sent anywhere?

No. The calculation runs in your browser and nothing you type is sent to a server.