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BMR & Daily Energy Calculator

Estimate adult resting energy needs with the Mifflin–St Jeor equation and an activity multiplier.

Choose the option that matches your situation.

Enter height (cm / inches); see assumptions below for the model limits.

Enter weight (kg / pounds); see assumptions below for the model limits.

Choose the option that matches your situation.

Enter age (years); see assumptions below for the model limits.

Choose the option that matches your situation.

Your results

BMR (kcal/day)
1,617.5
Estimated daily energy (kcal/day)
2,224.06

Calculations run in your browser. Results are estimates where described below.

How the calculation works

BMR = 10 × kg + 6.25 × cm − 5 × age + 5 (male) or −161 (female). Daily energy = BMR × activity factor.

Worked example

A 30-year-old male at 70 kg and 170 cm has estimated BMR 1,617.5 kcal/day.

Assumptions and limits

Adult estimates only, not a personalised calorie prescription. Activity factors and individual metabolism vary.

Reference sources

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