The formula, made clear.
BMI = weight in kilograms ÷ height in metres squared.
This is a general screening estimate, not a diagnosis or medical advice. Ask a qualified healthcare professional for personal guidance.
← All calculatorsHOW IT WORKS PRACTICAL GUIDE WORKED EXAMPLE COMMON QUESTIONS
HEALTH TOOL
BMI Calculator
Estimate body mass index from height and weight, with an easy-to-read reference category.
Estimated BMI22.9 — Healthy range
When to use this calculator
BMI is a quick screening measure that relates weight to height. It can help adults start a conversation about weight ranges, but it does not measure body fat directly or account for muscle mass, pregnancy or individual health history.
See the calculation in context
At 70 kg and 175 cm, BMI is 70 ÷ 1.75², which is about 22.9. That falls inside the commonly used adult healthy reference range.
Frequently asked questions
Is BMI a diagnosis?
No. It is a general screening estimate and should not replace advice from a qualified healthcare professional.
Is this calculator for children?
No. Children and teenagers require age- and sex-specific growth references.