Which formula should I trust?

None is definitive. They differ by a few kilograms and don't consider frame size or muscle.

Does frame size matter?

Yes. People with larger frames often weigh more at a healthy size.

What is the healthy weight range?

The weights that give a BMI of 18.5 to 24.9 at your height.

All tools

Ideal Weight Calculator

Enter your height and sex to compare four classic ideal-weight formulas with the healthy weight range for your height.

Height & Sex

Height (cm)

Sex

Ideal weight estimates from height and sex using the four classic formulas, plus the WHO healthy BMI weight range.

Formula

Devine: men 50 + 2.3 kg per inch over 5 ft; women 45.5 + 2.3. Robinson, Miller and Hamwi use their own constants; healthy range = BMI 18.5–24.9 × height².

Reference Values

•Formulas assume a medium body frame
•The four formulas usually agree within a few kilograms
•BMI range is the better practical guide

FAQ

Common questions about Ideal Weight Calculator

How we calculate this

We use the standard published formula for this calculation, and we show the working so you can check it.

Spotted a mistake? Tell us and we'll check it within a few days. See how we check our calculators.

Medical disclaimer

This tool gives a general estimate for information only. It is not medical advice and cannot diagnose a condition. Talk to a doctor, midwife or other qualified professional about your own situation.