How to use the ideal body weight calculator
Estimate ideal body weight with the Devine formula. Enter height, sex in the fields above; the ideal body weight, ideal body weight are computed instantly and plotted on the chart so you can see how the answer changes.
Formula
Variables
- h — Height (cm)
- s — Sex (—)
Worked example
With height = 175 cm, sex = Male, the calculator gives ideal body weight ≈ 70.46457 kg; ideal body weight ≈ 155.3476 lb.
Frequently asked questions
What is the formula for the ideal body weight calculation?
Ideal body weight (kg) = s+2.3 × (h / 2.54-60). Ideal body weight (lb) = [Ideal body weight] × 2.20462. Here h is height (cm), s is sex (—).
What inputs do I need for the ideal body weight calculator?
You need height in cm, sex in —. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use this calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.