Free Health Tool

BMR Calculator

Discover how many calories your body burns at complete rest using the clinically validated Mifflin-St Jeor Equation.

Calculate Your BMR

Estimate Your Total Calorie Needs

Multiply your BMR by the activity factor that best matches your lifestyle.

×1.200

Sedentary

Little or no exercise

× 1.200
×1.375

Lightly Active

1–3 days/week exercise

× 1.375
×1.550

Moderately Active

3–5 days/week exercise

× 1.550
×1.725

Very Active

6–7 days/week exercise

× 1.725

Based on the Mifflin-St Jeor Equation (1990) — the gold standard used by nutrition professionals worldwide.