Fitness & Health Calculators
Client-Side / Zero Latency
BMR Calculator
Calculate Basal Metabolic Rate (BMR) to find out how many calories your body burns at complete rest using the Mifflin-St Jeor equation.
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Basal Metabolic Rate (BMR) Calculator
Your Basal Metabolic Rate represents the minimum energy required to sustain vital bodily functions like respiration, circulation, and cell production while completely at rest.
Key Features:
- Mifflin-St Jeor and revised Harris-Benedict formulas.
- Displays resting metabolic rate in kcal/day.
- Activity level multiplier preview.
- Metric and imperial measurement support.
How to Use:
- Enter gender, age, height, and weight.
- Click Calculate BMR to find your baseline calories.
- Use your BMR score to configure daily nutrition and fitness plans.
Factors that Influence Your BMR
Age, muscle mass, biological sex, thyroid function, and genetics all influence resting metabolic expenditure.
Frequently Asked Questions:
Yes! Building lean muscle through resistance training elevates your resting metabolic rate because muscle tissue burns more calories at rest than fat.