Estimate basal metabolic rate using the Mifflin–St Jeor equation.
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BMI, BMR, calorie needs, body measurements and heart-rate estimates for general reference.
Enter the requested values above and select Calculate. The result updates immediately on the page, so you can change one value and compare different scenarios without leaving the calculator.
The estimate represents calories per day at rest, not a personalized medical recommendation.
Estimate basal metabolic rate using the Mifflin–St Jeor equation. It is designed for quick estimates and everyday problem solving. When a calculation affects a contract, tax filing, medical decision or other high-stakes situation, verify the result with the appropriate professional or authoritative source.
For a 30-year-old, 170-pound man who is 5 feet 10 inches tall, the Mifflin–St Jeor estimate is roughly 1,737 kcal per day.
Basal metabolic rate estimates energy use at rest, not how much someone should eat or burn through activity.
Sex-specific formulas are population estimates and may be inaccurate for an individual; do not treat them as medical prescriptions.
Related tools: BMI Calculator · Calorie Needs Calculator
Estimate basal metabolic rate using the Mifflin–St Jeor equation.
Mifflin–St Jeor: BMR = 10W + 6.25H − 5A + s, using kg, cm, age and a sex-specific constant.
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This calculator uses the Mifflin–St Jeor resting energy equation. It predicts resting energy expenditure and can differ from an individual measurement.
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