CALORIE CALCULATOR

The Mifflin-St Jeor equation is scientifically proven to be the most accurate BMR formula. The American Dietetic Association's systematic review found it predicts metabolic rate within 10% of measured values in more people than any other equation.

Published in the American Journal of Clinical Nutrition (1990), this formula was validated using indirect calorimetry - the gold standard for measuring metabolic rate.

Source: Frankenfield et al., "Comparison of predictive equations for resting metabolic rate in healthy nonobese and obese adults: a systematic review" (2005)