Ideal Weight Calculator

About Ideal Weight

Ideal weight formulas provide reference ranges based on height and sex. They do not account for frame size, muscle mass, or individual health history.

CalculatorCamp shows a BMI-based healthy band alongside classic clinical formulas (Hamwi, Devine, Robinson, Miller) averaged for comparison.

Treat results as conversation starters with your care team, not targets to chase without professional input.

How to use this tool

Enter height and sex as prompted. Calculate to view BMI range weights and formula estimates side by side.

Formula & methodology

This ideal weight calculator applies the standard relationship below. Intermediate values are kept at full precision; only the displayed result is rounded.

Healthy BMI band: weight = BMI x height(m)^2; Hamwi/Devine/Robinson/Miller vary by sex/height

Tips for accurate results

• A range is healthier than a single magic number on the scale.
• Strength athletes may weigh above formula estimates while staying fit.
• Older adults may benefit from slightly higher weight within clinical guidance.
• Focus on habits—sleep, movement, protein—not only scale weight.

Frequently asked questions

Sources & references

The factors and formulas used by this tool follow these references:

• World Health Organization — A healthy lifestyle: WHO recommendations (BMI ranges)
• CDC — About Adult BMI
• Mifflin MD et al. (1990) — A new predictive equation for resting energy expenditure
• Jäger R et al. (2017) — ISSN Position Stand: protein and exercise
• ACOG — Methods for Estimating the Due Date

Health and fitness results are estimates for general education and planning. They are not medical advice and do not replace an assessment by a doctor, registered dietitian, or other qualified professional.

Last reviewed: September 2026. Found an error? Tell us and we will correct it.