Complete guide
Estimate ideal body weight using the Devine equation and view a practical target range around the estimate.
Formula
IBW (kg) = base + 2.3*(height in inches - 60); base = 50 (male) or 45.5 (female)
Ideal body weight is a planning reference, not a verdict
Ideal body weight equations provide a quick reference point based on height and sex. They are useful for broad planning but do not capture full health context or body composition variation.
This calculator presents both a central estimate and a practical range to support realistic interpretation.
How to use IBW output constructively
Use IBW as one data point alongside fitness, labs, strength, and medical guidance. A balanced interpretation is more useful than targeting one exact number.
For lifestyle planning, gradual adjustments paired with sustainable habits are more effective than aggressive short-term targets.
- Select sex and enter height in centimeters.
- Calculate ideal body weight in kg and lb.
- Review suggested range around the estimate.
- Use output with broader health indicators before setting goals.
Why ranges matter
Bodies vary in frame size, lean mass, and adaptation history. A range communicates this variability better than a rigid single target.
This helps avoid over-precision and supports practical, individualized planning.
When to seek clinical guidance
If you are making decisions related to medication dosing, chronic conditions, or major weight change plans, consult a qualified clinician.
Online calculators are useful educational tools, but personal medical context should lead final decisions.
Glossary
Sex
Input value used by the ideal body weight calculator to compute the final output.
Height (cm)
Input value used by the ideal body weight calculator to compute the final output.
Formula
The mathematical relationship the calculator applies to your inputs.
Result
The computed output after the formula is applied to all valid input values.
FAQs
Is ideal body weight a diagnosis?
No. It is a reference estimate and should be interpreted with broader health context.
Why include a range instead of one value?
A range is more practical because body composition and goals vary between individuals.