BMR Calculator
Calculate your Basal Metabolic Rate
About this calculator
A BMR (Basal Metabolic Rate) calculator determines the number of calories your body burns at rest to maintain basic physiological functions like breathing, circulation, and cell production. This measurement represents your minimum daily energy expenditure and serves as the foundation for calculating total daily calorie needs. Understanding your BMR is essential for creating effective weight management plans, setting realistic fitness goals, and optimizing nutrition strategies. It helps you determine how many calories you need to maintain, lose, or gain weight based on your individual metabolic baseline.
How to use
Enter your age, gender, height, and current weight into the calculator fields. Select your preferred measurement units (metric or imperial). Click calculate to get your BMR result, which shows calories burned per day at rest. Use this number as a baseline to determine your total daily calorie needs by factoring in your activity level.
Frequently asked questions
What factors affect my BMR?
Age, gender, height, weight, muscle mass, and genetics are the primary factors. Men typically have higher BMRs than women, and BMR decreases with age.
How accurate are BMR calculations?
BMR calculators provide estimates with 10-15% accuracy for most people. Individual variations in metabolism, muscle mass, and health conditions can affect actual rates.
Should I eat only my BMR calories?
No, BMR represents calories needed at complete rest. You need additional calories for daily activities, exercise, and food digestion above your BMR.