BMR Calculator
Estimate your Basal Metabolic Rate — the calories your body needs at rest — using age, gender, height and weight. Optionally see an estimated Total Daily Energy Expenditure (TDEE) using activity levels.
Toggle between metric or imperial units and select your preferred formula for precise calculations.
About Basal Metabolic Rate (BMR)
Your Basal Metabolic Rate (BMR) represents the minimum number of calories your body requires to maintain essential functions such as breathing, blood circulation, and cell production while at rest. Understanding your BMR is crucial for effective weight management and overall health.
This calculator estimates your BMR using well-known formulas:
- Mifflin–St Jeor: Modern formula widely used for adults, accounting for age, gender, height, and weight.
- Revised Harris–Benedict: Classic formula revised for improved accuracy, factoring in similar variables.
- Katch–McArdle: Based on lean body mass; requires body-fat percentage for accurate calculation.
In addition to BMR, this calculator provides an estimated Total Daily Energy Expenditure (TDEE) based on activity levels ranging from sedentary to very active. Knowing your TDEE helps you plan diets, maintain, lose, or gain weight safely and effectively.
Use this tool to personalize your nutrition and fitness goals. Remember, while calculations are based on scientific formulas, individual variations exist, so use results as guidance rather than absolute medical advice.