Basal Metabolic Rate Calculator
Calculate how many calories your body needs at rest
Your Information
Your Results
Basal Metabolic Rate (BMR)
0
calories/day
This is how many calories you burn at complete rest
Daily Calorie Needs
| Activity Level | Calories |
|---|---|
| Sedentary (little or no exercise) | 0 |
| Lightly active (light exercise/sports 1-3 days/week) | 0 |
| Moderately active (moderate exercise/sports 3-5 days/week) | 0 |
| Very active (hard exercise/sports 6-7 days a week) | 0 |
| Extra active (very hard exercise/sports & physical job) | 0 |
What is BMR?
Basal Metabolic Rate (BMR) is the number of calories your body needs to maintain basic physiological functions at rest, such as breathing, circulation, and cell production. It accounts for about 60-75% of daily calorie expenditure.
How is BMR calculated?
This calculator uses the Mifflin-St Jeor Equation, which is considered the most accurate for calculating BMR:
- For men: BMR = 10 × weight(kg) + 6.25 × height(cm) - 5 × age(y) + 5
- For women: BMR = 10 × weight(kg) + 6.25 × height(cm) - 5 × age(y) - 161
Activity Level Multipliers
The daily calorie needs are calculated by multiplying your BMR by an activity factor:
- Sedentary: BMR × 1.2
- Lightly active: BMR × 1.375
- Moderately active: BMR × 1.55
- Very active: BMR × 1.725
- Extra active: BMR × 1.9