Estimate your daily calorie needs

BMR & TDEE calculator

Estimate your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE) using the Mifflin-St Jeor formula.

Formula

BMR (Mifflin-St Jeor) = 10×weight + 6.25×height − 5×age + (5 if male, −161 if female) · TDEE = BMR × activity multiplier

Assumptions

• Uses the Mifflin-St Jeor equation — one of several widely-used BMR formulas, generally considered more accurate than older formulas for most adults.
• Activity multipliers are broad categories; actual energy expenditure varies by individual.
• This is informational only and is not medical or nutritional advice.

Frequently asked questions

What's the difference between BMR and TDEE?
BMR is the calories your body burns at complete rest just to function. TDEE adds in the calories burned from daily activity and exercise — it's the number to use for planning food intake.

How do I use TDEE for weight loss or gain?
Eating below your TDEE tends to produce weight loss over time, and eating above it tends to produce weight gain — but this calculator only estimates the maintenance number, not a target for you.

Sources

• Mifflin & St Jeor — A new predictive equation for resting energy expenditure (Am J Clin Nutr, 1990)