Diet & Energy · Mifflin-St Jeor
BMR Calculator
Your Basal Metabolic Rate — the calories your body burns at complete rest, just to keep you alive.
YRS
CM
KG
What this means
BMR is the energy your body needs lying still all day — before any walking, exercise, or digestion. Multiply it by an activity factor to get your full daily calorie need (use the TDEE Calculator for that).
Your BMR — live result
Profile: Male · 28 yrs
1680
kcal / day at rest
Sedentary TDEE (×1.2)
2016 kcal
Per kg bodyweight
24.7 kcal/kg
BMR is estimated using the Mifflin-St Jeor equation, considered the most accurate widely-used formula for most adults. It is a general estimate, not a clinical measurement — actual metabolic rate varies by muscle mass, genetics, and health conditions.