Estimate a healthy body weight range from your height and sex using the Devine formula, and see the weight range that corresponds to a healthy BMI of 18.5–24.9.
Choose your unit system, then enter your height in cm (metric) or feet & inches (imperial). The calculator applies the Devine ideal body weight formula and a ±10% healthy band, plus the weight range for a healthy BMI (18.5–24.9).
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An ideal weight calculator estimates a healthy weight range for your height using the well-known Devine formula, then shows the wider weight band that keeps your BMI in the healthy 18.5–24.9 range.
These are guides, not targets — muscle mass, frame size and body composition all matter.
No. Frame size, muscle mass and age all shift your personal healthy range. Use the figure as a starting point alongside body composition and how you feel.
The Devine estimate targets a mid-range build. The BMI band is a population-level screen. For a personal target, combine them with waist measurement and body fat percentage.