Food & nutrition

TDEE calculator

Enter your body stats once: we estimate RMR with Mifflin–St Jeor, multiply by a standard activity factor, and show TDEE. If you know body fat %, we also display a Katch–McArdle-based TDEE for comparison. For maintenance or deficit targets, continue to the calorie calculator.

Formula notes

TDEE ≈ RMR × activity factor (1.2 sedentary … 1.9 very active).

RMR defaults to Mifflin–St Jeor. With body fat %, lean mass can drive a Katch–McArdle RMR (370 + 21.6 × lean kg) shown as a secondary TDEE.

Educational estimates only. Not medical advice.