Calculatree

BMI Calculator

Find your BMI and where it falls on the standard scale.

Inputs

Updates live as you type

How it works

Body mass index relates weight to height in a single number used to screen for underweight, healthy, overweight, and obese ranges. It’s a population-level guide and doesn’t account for muscle, frame, or fat distribution.

Frequently asked questions

Is BMI accurate for athletes?

Not always. Muscular people can register as "overweight" by BMI despite low body fat, because muscle weighs more than fat. For them, measures like body-fat percentage or waist circumference are more informative.

Related calculators

TDEE CalculatorEstimate your daily calorie burn from BMR and activity level.Age CalculatorCalculate exact age in years, months, and days from a birth date.Percentage CalculatorWork out a percentage of a number and percentage change.Work Hours CalculatorCalculate hours worked between a start and end time, minus breaks.