Which ideal weight formula is most accurate?

No single formula is definitively most accurate — they were each developed for different clinical purposes. The Devine formula is most widely used in clinical settings. The range across all four formulas gives a reasonable target zone.

Is ideal weight the same as healthy weight?

Not exactly. Ideal weight formulas give a single number based on height, while healthy weight is a range based on BMI 18.5-24.9. The BMI range accounts for natural variation in body composition better than a single formula number.

Should I try to reach my ideal weight?

Use it as a rough reference, not a strict target. Body composition (muscle vs fat) matters more than a number on a scale. Consult your doctor for personalized guidance.

Do these formulas account for age?

No — the classic formulas only use height and sex. Research suggests healthy weight ranges shift slightly with age, particularly for older adults where slightly higher BMI may be protective.

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Ideal Weight Calculator

Calculate ideal body weight using 4 clinical formulas — Devine, Robinson, Miller, Hamwi. Metric and imperial. Free online.

About this tool

Calculate your ideal body weight using four well-known clinical formulas (Devine, Robinson, Miller, and Hamwi) side-by-side, plus the healthy BMI weight range for a complete picture.

Note: "Ideal weight" formulas are clinical estimates. Body composition, muscle mass, and individual variation matter more than a single number.

Height: 175 cm (5′9″)