BMR Calculator
Estimate basal metabolic rate and daily maintenance calories with metric or imperial units in one clear view.
BMR Calculator
Estimate basal metabolic rate and daily calorie targets without switching formulas
Body profile
Basal metabolic rate
1,649
Estimated for a Male profile aged 30.
Current weight
70 kg
Height
175 cm
Sedentary maintenance
1,979 kcal/day
Light activity maintenance
2,267 kcal/day
Moderate activity maintenance
2,556 kcal/day
Active maintenance
2,845 kcal/day
Very active maintenance
3,133 kcal/day
Activity assumptions
- Sedentary: Little or no exercise, mostly seated work, and limited intentional movement.
- Light: Light exercise or walks 1 to 3 days per week.
- Moderate: Moderate training or physical activity 3 to 5 days per week.
- Active: Hard exercise 6 to 7 days per week or a physically demanding routine.
- Very active: Two-a-day training, manual labor, or an unusually high daily workload.
Related Tools
Compute attendance rate, remaining targets, and excused absences handling.
Calculate body mass index, weight category, and healthy weight range with metric or imperial units.
Estimate maintenance calories, calorie targets, and starter macros for fat loss, maintenance, or lean gain goals.
Calculate total work experience across roles with overlap handling.
Semester GPA based on course credits and grade points.
Determine face shape from key measurements with confidence scoring.
Frequently Asked Questions
What is BMR?
BMR stands for basal metabolic rate. It estimates how many calories your body uses each day at complete rest to support essential functions like breathing, circulation, and temperature regulation.
How is BMR calculated here?
This calculator uses the Mifflin-St Jeor equation. It combines sex, age, weight, and height to estimate resting calorie needs, then multiplies that baseline by common activity factors to estimate maintenance calories.
What is the difference between BMR and maintenance calories?
BMR is your resting baseline. Maintenance calories add movement and exercise on top of that baseline. They represent the approximate daily intake needed to maintain current body weight at a given activity level.
Is this enough to plan diet or weight loss?
It is a planning estimate, not medical advice. Real calorie needs vary with body composition, medications, hormones, illness, and training volume, so use it as a starting point and adjust with real-world results.