Ideal Weight Calculator
Find your ideal weight range using the Devine formula and the healthy BMI range for your height — free online. — free, fast and private.
How to use Ideal Weight Calculator
- Enter your height in centimetres.
- Choose your sex — the Devine formula differs for men and women.
- Click Calculate Ideal Weight to see your ideal weight and healthy range.
Note: this tool runs in your browser. Nothing is uploaded.
Disclaimer: this tool gives an estimate for general information only. It is not medical advice. Talk to a doctor or other qualified health professional before making any health decision.
Frequently Asked Questions
How is ideal weight calculated?
The Devine formula gives 50 kg for a man (45.5 kg for a woman) at 5 feet tall, plus 2.3 kg for each inch above 5 feet. The healthy BMI range of 18.5–24.9 gives a wider, more useful range for most people.
Is this tool free to use?
Yes, it is 100% free with no sign-up. Your data stays in your browser.
Is my data uploaded or stored?
No. This tool runs entirely in your browser — nothing you enter is uploaded to a server.
Can I use it on my phone?
Yes, it is fully mobile-friendly and works in any modern browser on phone, tablet or computer.