Ideal Weight Calculator

There is no single 'ideal' weight, but medical formulas can provide useful reference ranges. Our calculator computes ideal weight using four well-known formulas — Devine (1974), Robinson (1983), Miller (1983), and Hamwi (1964) — and shows you the range. Use this as a starting point, not a definitive answer.

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Height (cm)

About this calculator

This calculator shows ideal body weight estimates from four well-known medical formulas: Devine (1974), Robinson (1983), Miller (1983), and Hamwi (1964). These formulas were originally developed for pharmaceutical dosing calculations and provide a rough guide only. Ideal weight varies based on body composition, muscle mass, and individual health factors. Consult a healthcare professional for personalised advice.

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Frequently Asked Questions

What is the most accurate ideal weight formula?

No single formula is universally accurate. The Devine formula is the most commonly used in clinical settings (including drug dosing). The range across all four formulas gives a more useful picture than any single number.

How much should I weigh for my height?

Ideal weight depends on height, sex, body frame, muscle mass, and age. For example, a 5'10" male has an ideal weight range of roughly 66-73 kg (145-160 lbs) across the four formulas, but individual variation is normal.

Do ideal weight formulas account for muscle mass?

No. These formulas use only height and sex. If you have above-average muscle mass (athletes, strength trainees), your healthy weight will likely be higher than these estimates. Body fat percentage is a better metric in that case.

Should I aim for my ideal weight?

Use ideal weight ranges as a general reference, not a strict target. Health markers like blood pressure, blood sugar, energy levels, and body fat percentage are more meaningful indicators of health than weight alone.

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