What is TDEE, and why does it matter?
Total Daily Energy Expenditure is an estimate of the energy used across a full day: resting processes, everyday movement and exercise.
The idea in practice
Enter your measurements and choose the activity description closest to your usual week. We apply Mifflin–St Jeor, then the selected multiplier. The multipliers (1.2, 1.375, 1.55, 1.725 and 1.9) are broad modeling assumptions.
Keep the result in perspective
Use this estimate as a starting point, not a fixed daily requirement. Day-to-day movement, body composition and measurement error affect actual energy needs. Adults 20–100 only; not for pregnancy or breastfeeding.
Sources & further reading
Mifflin et al. · Resting energy equation (1990) ↗NIDDK · Body Weight Planner ↗
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