BMR & Daily Calories Calculator

Uses the Mifflin–St Jeor equation. Switch units at any time; results update instantly.

Units

Age

Sex

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Height

Weight

Activity

BMR = Basal Metabolic Rate. TDEE = Total Daily Energy Expenditure (BMR × activity).

BMR

0 kcal/day

Daily calories (TDEE)

0 kcal/day

FAQ

Which formula do you use?

We use the Mifflin–St Jeor equation, which is widely accepted for estimating BMR in adults.

What’s the difference between BMR and TDEE?

BMR is the energy your body needs at complete rest. TDEE includes daily activity: TDEE = BMR × activity factor.

Is this accurate for athletes or very lean individuals?

Equations provide estimates. Highly muscular or very lean body types can deviate; consider tracking intake/weight or using additional measures.

Can I lose weight by eating below TDEE?

Generally yes, a modest calorie deficit leads to weight loss. Consult a healthcare professional before making major diet changes.