BMR Calculator

Estimate your Basal Metabolic Rate (BMR) — the energy your body uses at rest. Uses the Mifflin-St Jeor equation.

Inputs

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UnitsSex

AgeWeight (kg)Height (cm)

Result

Estimated BMR

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This is an estimate of calories your body burns at rest (not your daily maintenance).

Helpful tips

Use BMR as a baseline; your real maintenance is higher (TDEE).
Track energy, hunger, and body changes for 2–3 weeks and adjust.
If you’re under 18, focus on performance + health and get professional guidance.

Disclaimers

Estimates can be off due to muscle mass, hormones, sleep, stress, meds, and more. Not medical advice. If pregnant/postpartum, under 18, or managing an eating disorder, consult a qualified professional.