Calculate your TDEE, BMR, BMI, macros, and 30+ more health metrics instantly. Science-backed formulas trusted by fitness professionals worldwide.
From daily calorie tracking to military body fat standards — all calculators are free, instant, and built on peer-reviewed formulas.
Most calorie calculators use outdated or simplified formulas. TDEE.TECH uses the Mifflin-St Jeor equation (the gold standard since 1990) with the option to switch to the more precise Katch-McArdle formula when body fat percentage is known.
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