BMI Calculator

Worked example

70 kg at 175 cm — about 22.86 BMI

Quick answer

Is BMI a diagnosis?

No. BMI is a screening ratio and does not directly measure body fat, health or fitness.

What is the BMI Calculator?

Calculate body mass index from weight and height using the metric BMI formula. Use it when you have the required inputs and want a deterministic, repeatable result with the calculation method visible.

How to use this calculator

Enter the values requested by the tool, keep units and time periods consistent, resolve any validation message, calculate, then review the primary answer together with the displayed formula and supporting values.

Formula and method

This calculator uses a deterministic formula and shows the calculation breakdown with the result so the answer can be checked.

Worked example

70 kg at 175 cm about 22.86 BMI

Common mistakes to avoid

Check units, decimal points, percentages, signs, date/time order, selector choices, and rounding. For important decisions, verify the result against an independent source or qualified professional when appropriate.