BMR Calculator: Discover Your Basal Metabolic Rate
Basal Metabolic Rate (BMR) represents the absolute minimum number of calories your body requires to perform basic life-sustaining functions, such as breathing, circulating blood, and cellular repair, while at rest. Think of it as the energy your body would burn if you stayed in bed all day.
Calculate Your BMR
Use our scientifically-backed BMR calculator to find out your resting metabolic rate. This is the foundation for determining your overall calorie needs.
Why is BMR Important for Intermittent Fasting?
During intermittent fasting, especially prolonged fasts, your body relies on its fat stores to meet your BMR requirements. Knowing your BMR helps you understand exactly how much energy your body needs and prevents you from under-eating severely during your feeding windows, which can crash your metabolism over time.
Make Fasting and Tracking Easier
Don’t guess your calories! The FastingTracker app helps you stay on top of your nutrition. Features include AI Photo Calorie Counting — just snap a pic of your meal — and a Barcode Scanner to instantly evaluate the nutritional quality of any product.
