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Basal metabolic rate calculator.
TOOLS · WEIGHT LOSSThe calories your body needs at complete rest — breathing, temperature, thinking.
Biological sex
years
18 years90 years
cm
120 cm220 cm
kg
35 kg250 kg
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MORE CALCULATORS
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BMI calculator
Body Mass Index — the most common starting point, in kg and cm.
Open calculator →Total daily energy (TDEE)
Your BMR multiplied by a realistic activity factor.
Open calculator →Calorie deficit
How many calories to eat per day to lose weight without starving.
Open calculator →Daily protein
Recommended protein per day based on your goal and training.
Open calculator →Notice: Formulas are population estimates. Your actual metabolism can vary ±10–15% by genetics, hormones, or body composition. Clinical calorimetry measures more precisely.