Calorie Calculators

CalorieLab guides

Plain-language answers to calorie calculators questions, written from the same sourced data behind CalorieLab. Every guide lists its sources and the date it was last updated.

Updated June 10, 2026
How does the Mifflin-St Jeor equation estimate your daily calories?
How the Mifflin-St Jeor equation converts sex, age, weight, and height into a daily calorie estimate — with a worked example.

CalorieLab guides

How does the Mifflin-St Jeor equation estimate your daily calories?