Health · Mifflin-St Jeor

Calorie calculator

Estimate your daily energy needs based on your stats and activity level.

Your details

Daily target
—
Calories per day to reach your goal
Basal rate (BMR)—
Maintenance (TDEE)—

Rough sheet

step-by-step
BMI Calculator Body Fat Percentage Calculator Ideal Weight Calculator Macro Calculator

How your calorie needs are estimated

This calculator uses the Mifflin-St Jeor equation to estimate your basal metabolic rate (BMR) — the calories your body burns at complete rest — from your age, sex, height, and weight. That BMR is then multiplied by an activity factor based on how much you exercise to estimate your total daily energy expenditure (TDEE), the number most people use as a baseline for maintaining, losing, or gaining weight.

Frequently asked questions

The Mifflin-St Jeor equation for basal metabolic rate (BMR), then multiplied by an activity factor to estimate total daily energy expenditure (TDEE).

Yes — choose a goal (lose, maintain, or gain) and the calculator adjusts your daily target calories accordingly, on top of your maintenance level.