What is the best BMR formula?

Written by Editorial Team | Last Updated: August 2026

The Mifflin-St Jeor equation is widely regarded by dietitians and sports scientists as the most accurate and reliable standard formula for calculating Basal Metabolic Rate (BMR). It computes daily baseline caloric expenditure by factoring in an individual's exact weight, height, age, and biological sex, outperforming older calculations like the Harris-Benedict equation by accounting for modern body composition data and metabolic variations.

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