BMI (Body Mass Index) and body fat percentage are the two most common ways to assess body composition. BMI is a simple height-to-weight ratio, quick to calculate but limited in accuracy. Body fat percentage directly measures how much of your weight is fat versus lean mass, providing a more complete picture of health risk. Understanding the difference helps you set better fitness goals.
CalcPlanet – Free Online Calculators
725+ free calculators and 108 tools for math, money, health, and everyday life. Instant results, verified formulas, no sign-up.
By CalcPlanet Editorial · Reviewed against our Editorial Standards and Formula Sources.
CalcPlanet calculators are free, privacy-first, and formula-reviewed.
Editorial Standards · Formula Sources · Privacy · Terms · Contact
