About this tool
Estimate ideal body weight using the Devine formula. This is a reference calculation, not a health assessment. This page explains the values requested and the method used so you can check whether the result fits your purpose.
How to use it
Enter Sex for formula and Height.
Press Calculate, then review the result and the method below. Use Reset to clear the values in the calculator panel.
Method used
Female: 45.5kg + 2.3kg for each inch over 5ft. Male: 50kg + 2.3kg for each inch over 5ft.
Important assumptions and limits
This is an estimate for general information and should not be used alone for medical, dietary or treatment decisions.
Health note: This is a general numerical estimate. It is not medical advice, a diagnosis or a substitute for care from a qualified clinician.
Questions about this result
Are the values I enter sent to The Decimal Space?
No. This calculator processes the values in your browser. This page does not require a calculator account or a server-side save function.
Can I use this for an important decision?
Check the inputs, units, formula and any rounding. For a decision with legal, tax, financial, medical, engineering or safety consequences, use an official source or obtain advice from an appropriately qualified professional.
Why might a result differ from another calculator?
Different tools can use different inputs, rounding, units, assumptions or formulas. Compare the calculation method rather than relying only on a displayed number.