BMR (Mifflin–St Jeor): BMR = 10·kg + 6.25·cm − 5·age + s; s = +5 (male), s = −161 (female).
Activity factors: Sedentary 1.20; Light 1.375; Moderate 1.55; Very active 1.725; Extra 1.90.
Units: Inputs accepted as metric (cm, kg) or imperial (ft/in, lb); imperial converts internally to metric.
Ranges (sanity checks): Age 5–120; Height 80–250 cm; Weight 30–300 kg (or equivalent in imperial).
Purpose: Estimate daily calories to maintain current weight at the chosen activity level.
Edge cases & notes
Activity descriptions are approximate; choose the nearest match to your weekly routine.
This is an estimate—hydration, thermogenesis, body composition, and measurement error can shift real needs.
For athletes with precise body-fat data, Katch–McArdle (LBM-based) may be preferable; this tool uses Mifflin–St Jeor for robustness.
Cookies & privacy
Utilities Bunker uses necessary cookies to run the site. Optional cookies help remember preferences,
measure usage, and improve the platform. You can change your choices any time.
Privacy Policy.
