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BMR calculator
Calories your body burns at rest each day.
Quick answer
BMR, or basal metabolic rate, is the energy your body uses at rest, from the Mifflin-St Jeor equation. Formula: Men: BMR = 10 ร weight (kg) + 6.25 ร height (cm) โ 5 ร age + 5. A 30-year-old man who weighs 70 kg and is 175 cm tall has a BMR of about 1,649 calories a day.
Read the guide: How to calculate BMR: the calories you burn at rest
BMR (calories per day)
1,649
- Per hour
- 69
A general estimate, not medical advice. Talk to a doctor or dietitian about your own health.
How is BMR calculated?
Your basal metabolic rate is the energy your body needs just to stay alive: breathing, circulation, keeping warm.
This calculator uses the Mifflin-St Jeor equation, which is widely used for healthy adults.
Your real needs are higher because you move. The daily calories (TDEE) calculator adds activity.
What is the formula for BMR?
- Men: BMR = 10 ร weight (kg) + 6.25 ร height (cm) โ 5 ร age + 5
- Women: BMR = 10 ร weight (kg) + 6.25 ร height (cm) โ 5 ร age โ 161
Can you show a worked example of BMR?
Man, 30 years, 70 kg, 175 cm: 700 + 1,093.75 โ 150 + 5 = 1,648.75, about 1,649 calories a day.
What is the BMR for different weights?
Calories a day at rest, for a 30-year-old who is 170 cm tall. A general estimate, not medical advice.
| Weight | Men | Women |
|---|---|---|
| 50 kg | 1,418 | 1,252 |
| 60 kg | 1,518 | 1,352 |
| 70 kg | 1,618 | 1,452 |
| 80 kg | 1,718 | 1,552 |
| 90 kg | 1,818 | 1,652 |
Common questions
What is BMR?
Basal metabolic rate: the calories you would burn in a day lying still.
Is BMR the same as the calories I should eat?
No. You also burn calories moving about. Use the TDEE calculator for a daily target.
Why do men and women get different results?
On average men carry more muscle, which burns more energy at rest. The equation reflects that.
How accurate is it?
It is an estimate that can be off by a few hundred calories for any one person.