TDEE Calculator
Total daily calories burned, activity included. e.g. “How many calories do I burn in a day?”
Enter your values
Results update as you type. All calculation happens in your browser.
Methodology
Total daily calories burned, activity included. This tool uses a standard, documented formula and runs entirely on your device.
Last reviewed January 2026 · Runs client-side
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Estimating your total daily energy use
Total daily energy expenditure is your basal rate scaled up for how active you are. It is the number people use as a maintenance baseline, eat around it to hold weight, below it to lose, above it to gain.
This calculator estimates BMR with the Mifflin-St Jeor equation and multiplies it by a standard activity factor. Both steps are estimates, so the result is a guide, not a precise target.
How to use this calculator
- Enter your sex, weight, height, and age.
- Choose the activity level that best matches a typical week.
- Read your TDEE, along with rough targets for a mild deficit or surplus.
What the inputs mean
- Activity level
- From sedentary to very active. Be honest, overstating activity inflates the estimate.
- Weight and height
- Metric inputs feed the BMR calculation the TDEE is built on.
A BMR of 1,700 calories at a moderate activity factor of 1.55 gives a TDEE of about 2,300 calories a day for maintenance.
The formula, in plain terms
TDEE = BMR × an activity factor, ranging from roughly 1.2 for sedentary to 1.9 for very active.
Frequently asked questions
How do I use TDEE to lose weight?
Eat a moderate amount below it to create a deficit. A gentle, steady deficit is easier to sustain than a large one.
Which activity level should I pick?
Choose the one that matches a normal week, not your best week. Most people sit between light and moderate.
Last reviewed January 2026. This explainer is general information, not professional advice.