Ideal Weight Calculator

What the ideal weight calculator does

This tool estimates a reference "ideal body weight" for your height and sex using four classic formulas — Devine, Robinson, Miller, and Hamwi. These equations were originally developed for clinical purposes, including medication dosing, and remain a handy way to anchor a sensible target weight.

How the formulas work

All four start from a base weight at five feet (60 inches) of height and add a fixed amount for every inch above that. The Hamwi formula, created in 1964, is the oldest; Devine (1974) is the most widely used today; Robinson (1983) and Miller (1983) are later refinements. They differ slightly in their per-inch increments, which is why this calculator shows all four.

How to interpret your result

Treat the four numbers as a range rather than a single magic figure. People with larger frames or more muscle naturally sit toward or above the top of the range, while smaller-framed individuals sit lower. The formulas do not account for body composition, so a muscular athlete may exceed "ideal" weight while being very lean.

Health recommendations

Use ideal body weight alongside BMI, the healthy weight range, and body-fat percentage for a balanced view. If your goal is to move toward this range, do it gradually with sustainable nutrition and regular strength and cardio training rather than rapid crash dieting.