Health
Calorie Calculator (BMR + TDEE)
How many calories does your body actually need? Get your BMR (resting calories) and TDEE (with activity), plus suggested intake for losing, maintaining, or gaining weight.
FAQ
What's BMR vs TDEE? +
BMR (basal metabolic rate) is the calories your body needs just to stay alive — breathing, heart beating, organs running — if you laid in bed all day. TDEE adds activity on top.
Why Mifflin-St Jeor? +
It's the most accurate equation for the general population. The Harris-Benedict equation is older and less accurate. The Katch-McArdle uses body fat % and is more accurate IF you actually know your body fat.
500 calorie deficit = 1 lb/week, right? +
Roughly. 3,500 calories ≈ 1 lb of fat. But metabolism adapts as you lose, so progress slows. Not medical advice.
Heads up: ClutchCalcs gives you fast, accurate results — but always sanity-check critical decisions (medical, financial, structural) with a professional.
Spot a wrong number or want a calculator added? Tell us →