Energy estimate

BMR Calculator

Estimate how many calories your body uses at rest, then apply an activity factor for a rough daily maintenance range.

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Estimate BMR and maintenance calories

What this estimate is for

BMR is a starting point for planning. Real energy needs change with sleep, training, illness, medication, menstrual cycle, body composition, and daily movement that formulas cannot see.

Do not use this page to set an aggressive diet. For medical conditions, pregnancy, eating disorder history, or unexplained weight change, work with a qualified professional.

Formula used

This page uses the Mifflin-St Jeor equation because it is common in modern nutrition calculators.

Men: BMR = 10 × weight(kg) + 6.25 × height(cm) − 5 × age + 5
Women: BMR = 10 × weight(kg) + 6.25 × height(cm) − 5 × age − 161
TDEE ≈ BMR × activity factor

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