BMR Calculator
Calculate your basal metabolic rate (BMR) using the Mifflin-St Jeor equation and see estimated daily calorie needs at different activity levels.
Inputs
Results
- Sedentary (little/no exercise)2085 kcal
- Light (1–3 days/week)2389 kcal
- Moderate (3–5 days/week)2693 kcal
- Active (6–7 days/week)2997 kcal
- Very active (physical job + training)3301 kcal
Disclaimer: BMR is an estimate using the Mifflin-St Jeor equation. Individual metabolic rates vary. Consult a registered dietitian or physician before making nutrition or fitness changes.
About the BMR Calculator
Your BMR is the number of calories your body burns at complete rest to keep essential functions running — breathing, circulation, cell repair, and temperature regulation. It typically accounts for 60–70% of total daily energy use.
Multiply BMR by an activity factor to estimate your total daily energy expenditure (TDEE). Use TDEE as a baseline for maintenance, then create a deficit or surplus to lose or gain weight.
Frequently asked questions
More fitness & health calculators
BMI Calculator
Calculate Body Mass Index from height and weight.
Calorie Calculator
Estimate daily calorie needs based on activity level.
Body Fat Calculator
Estimate body fat % using the U.S. Navy method.
Ideal Weight Calculator
Estimate ideal weight range using multiple common formulas.
Pace Calculator
Calculate running pace per mile or kilometer and average speed.
Pregnancy Calculator
Estimate due date, current week, and trimester from your LMP.
Pregnancy Conception Calculator
Estimate conception date range and fertile window.
Due Date Calculator
Estimate due date from LMP, conception, or IVF transfer.