BMR · Mifflin-St Jeor
1780kcal/day
- Mifflin-St Jeor1780 kcal
BMR is just the minimum — to get your daily calorie needs, multiply by an activity factor. See TDEE Calculator.
Sources & methodology
The Vytrix app uses the same formulas. Mifflin-St Jeor is the standard; Katch-McArdle becomes active as soon as you have entered a reliable body fat percentage.
- Mifflin, M. D. et al. (1990) — A new predictive equation for resting energy expenditure in healthy individuals. Am J Clin Nutr
- Katch, V. L. & McArdle, W. D. (1977) — Prediction of body density from skinfold and girth measurements. Am J Phys Anthropol
- Frankenfield, D. et al. (2005) — Comparison of predictive equations for resting metabolic rate in healthy nonobese and obese adults. J Am Diet Assoc
BMR predictions in public validation studies typically have ±10% deviation from indirect calorimetry measurements. For obese adults (BMI > 30), Vytrix in the app applies a Byrne correction — see the Adaptive TDEE paper for how this estimate is later refined based on your actual weight history.