BMR Calculator
Find your resting metabolic rate and calories by activity level.
Age
Height
Weight
Basal Metabolic Rate
1,628 kcal
Calories your body burns at complete rest, per day
1,628 kcal
Calories burned per day by activity
Sedentary
Little or no exercise
1,953 kcal
Light
Exercise 1–3 days/week
2,238 kcal
Moderate
Exercise 3–5 days/week
2,523 kcal
Active
Exercise 6–7 days/week
2,807 kcal
Very Active
Physical job or 2x/day training
3,092 kcal
How this calculator works
This uses the Mifflin-St Jeor equation, generally considered the most accurate BMR formula for most people: for men, BMR = 10 × weight(kg) + 6.25 × height(cm) − 5 × age + 5; for women, the same calculation minus 161. It estimates the calories your body burns just staying alive — breathing, circulating blood, keeping you warm — before any movement is counted.
The activity breakdown multiplies your BMR by a factor for how much you move day-to-day, giving your Total Daily Energy Expenditure (TDEE) at each level — a more useful number if you're planning calorie intake for weight loss, maintenance or gain.