Tool
BMR Calculator
Estimate basal metabolic rate with the Mifflin–St Jeor equation from age, sex, height, and weight. Daily needs are higher once activity is included.
How this estimate is made
BMR is an estimate of resting energy. Multiply by an activity factor in the calorie calculator for a daily sketch.
See the medical disclaimer. Track a plan in the Fitkyn app. Browse all tools or health guides.
Frequently asked questions
Is this medical advice?
No. Results are population estimates. Discuss medical conditions, pregnancy, eating disorders, or medications with a qualified healthcare professional.
Why might my number differ from another site?
Equations, activity factors, and rounding differ. Treat every calculator as a sketch.
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