Health

BMI Calculator

Calculate body mass index from height and weight.

BMI Calculator

Result
Ready

    Guide

    BMI Calculator basics

    Calculate body mass index from height and weight. BMI is a screening number, not a diagnosis.

    Formula

    How the calculation works

    BMIweight kg / height m^2

    Example

    Example calculation

    70 kg and 175 cm

    BMI 22.86

    Notes

    Assumptions

    • Adults only; BMI categories do not fit every body type.
    • Use clinical advice for health decisions.

    FAQ

    BMI Calculator FAQ

    What is the BMI Calculator for?

    It uses the fields on this page and applies the formula shown below the result. Check the assumptions before using the number outside the page.

    Can I use decimals?

    Yes. Decimal inputs are supported unless the field represents a count.

    How should I use the result?

    Treat it as a calculator result, not a full plan. Round it or adjust it when the real situation calls for it.

    Related Calculators

    BMR CalculatorEstimate basal metabolic rate with the Mifflin-St Jeor equation.Calorie CalculatorEstimate daily maintenance calories from BMR and activity level.
    Sources. Common adult body mass index formula.
    Disclaimer. Use this result as a check or starting point. For finance, health, engineering, or purchasing decisions, verify the numbers before acting on them.