Home/Calculate
Calculate

BMI calculator

Estimate body mass index from height and weight.

LocalFree
This tool runs on your device in the browser.
Instructions and limitations
TOOL GUIDE

What this tool is for

BMI calculator — Estimate body mass index from height and weight.

Useful for quick everyday estimates and for checking arithmetic with clearly entered values.

Common uses
  • Check everyday arithmetic
  • Compare possible values
  • Create a quick estimate
Educational and informational use

Results are general estimates, not legal, financial, tax, medical, engineering, or other professional advice. Check inputs and units and consult a qualified professional for important decisions.

Read TermsAcceptable Use Policy
EXPLANATION & EXAMPLE

Understand the result—not just the number

Core ideaBMI = weight ÷ height²

Health calculators provide broad estimates, not diagnoses. Individual needs can differ materially.

Quick example72 kg ÷ 1.80² = 22.2

After calculating, the tool shows the values used and the working so you can check it.

Calculate

Related tools

CalculatePercentage calculatorCalculate a percentage of any value. Local
CalculatePercentage changeMeasure the percentage increase or decrease between two values. Local
CalculatePercentage differenceCompare two values using their average as the reference. Local
CalculateAverage calculatorFind the sum, count and arithmetic mean of a number list. Local

Menu