BMR Calculator
Estimate the energy your body may use at rest from basic adult measurements.
BMR Calculator
Quick estimates using your height, weight, age, activity, or daily exercise.
These results are general estimates, not medical advice. Individual needs can vary. Consult a qualified healthcare professional before making health decisions.
How this tool works
Basal metabolic rate is an estimate of energy used for essential resting functions. FitCalc applies a commonly used adult formula to the measurements you enter.
Important limitations
- BMR is not the same as total daily calorie use.
- Body composition, pregnancy, illness, medication and age-related changes can affect individual energy needs.
- Do not use a BMR estimate as a prescribed diet or treatment target.
Frequently asked questions
What is the difference between BMR and TDEE?
BMR estimates resting energy use. TDEE applies an activity factor to estimate broader daily energy expenditure.
Can BMR diagnose a slow metabolism?
No. A calculator cannot diagnose metabolic or hormonal conditions. Discuss symptoms or concerns with a qualified clinician.
Medical disclaimer: FitCalc provides general informational, fitness and wellness estimates or tools only. It is not medical advice, diagnosis, treatment, monitoring or emergency assistance. Consult a qualified healthcare professional before making health decisions and stop an activity if you feel unwell.
Explore the complete FitCalc toolkit, read the documentation, or try the TDEE calculator.