BMR Calculator
Estimate basal metabolic rate with the Mifflin-St Jeor equation.
This page is an editable estimator with realistic defaults so you can model your own situation in minutes.
Mifflin-St Jeor BMR uses weight, height, age, and sex to estimate resting daily calories.
Treat the result as a planning estimate and verify important numbers with the relevant official source before acting.
| Age | 35 years | |
|---|---|---|
| Sex | female |
Assumptions
- BMR estimates resting daily energy needs before activity.
- Actual metabolism can differ with medical conditions, body composition, and medications.
How this calculator works
Formula used
Mifflin-St Jeor BMR uses weight, height, age, and sex to estimate resting daily calories.
Example calculation
Plug in your own numbers and the result updates instantly. Mifflin-St Jeor BMR uses weight, height, age, and sex to estimate resting daily calories.
BMR Calculator FAQ
Is this bmr calculator medical advice?
No. It is an educational estimate only and should not be used to diagnose, treat, or make medical, nutrition, legal, or emergency decisions.
Why might my real result be different?
Age, sex, body composition, pregnancy, medications, medical conditions, training status, lab methods, and measurement accuracy can all change real-world results.
Should I check these results with a professional?
Yes. Confirm health, nutrition, fitness, kidney function, alcohol, or safety decisions with a qualified professional or official source.