Ideal Weight Calculator
Compare three established formulas for estimating ideal body weight (Devine, Robinson, Miller) from your height, side by side — instantly, in your browser.
See what the Devine, Robinson and Miller formulas give for your height, side by side. It runs in your browser and nothing is stored.
How to use it
- Enter your height in centimetres.
- Choose the sex the formulas should use.
- Compare the three results rather than picking one.
The formulas
All three start from a base weight at 5 feet (152.4 cm) and add a fixed amount per inch above it:
- Devine (1974): men 50 kg + 2.3 per inch; women 45.5 kg + 2.3 per inch.
- Robinson (1983): men 52 kg + 1.9 per inch; women 49 kg + 1.7 per inch.
- Miller (1983): men 56.2 kg + 1.41 per inch; women 53.1 kg + 1.36 per inch.
A woman of 165 cm gets 56.9, 57.4 and 59.8 kg; a man of 175 cm gets 70.5, 68.9 and 68.7 kg.
Limits
These are population-average figures, not a personal target. They ignore body composition, frame, age and ethnicity, and trace back to height-weight tables used for drug dosing and insurance statistics (Pai and Paloucek, 2000). Below 5 feet the tool returns the base weight, which can overstate a healthy weight for much shorter adults. They do not apply to children or during pregnancy. A BMI range is more honest than one number: for 165 cm the WHO normal band is roughly 50 to 68 kg.
Read the guide. General information only, not medical advice.
FAQs
Is ideal weight the same as healthy BMI?
No. The formulas give one figure; a healthy BMI is a range, and neither accounts for muscle or frame.
Do they apply to athletes?
Not well. A muscular person can weigh well above the result and be healthy.