Ideal Weight Calculator
Find your ideal body weight using four widely used medical formulas.
Reviewed March 2026 How we build our calculators →
Robinson Formula
Miller Formula
Devine Formula
Hamwi Formula
The Formula
Formula
Devine Formula:
Men: 50 kg + 2.3 kg per inch over 5 ft
Women: 45.5 kg + 2.3 kg per inch over 5 ft
Other formulas (Robinson, Miller, Hamwi) use similar structure
Men: 50 kg + 2.3 kg per inch over 5 ft
Women: 45.5 kg + 2.3 kg per inch over 5 ft
Other formulas (Robinson, Miller, Hamwi) use similar structure
Worked Example
Male · Height: 5'10" (10 inches over 5 ft)
= 50 + (2.3 × 10)
= 50 + 23
= 73 kg (161 lbs) ideal weight
= 50 + (2.3 × 10)
= 50 + 23
= 73 kg (161 lbs) ideal weight
Four Ideal Weight Formulas
There is no single universally accepted ideal weight formula. This calculator provides results from four established medical formulas: Robinson (1983), Miller (1983), Devine (1974), and Hamwi (1964). The range they produce gives a reasonable target zone.
Ideal Weight vs. Healthy Weight
These formulas are based on height and sex. They do not account for muscle mass, bone density, or body composition. An athlete may weigh more than the "ideal" but still be at peak health.
Frequently Asked Questions
Is ideal weight the same as healthy weight?
Not exactly. Ideal weight formulas give a mathematical estimate based on height. Healthy weight is more broadly defined by BMI (18.5u201324.9), body fat percentage, and overall health markers.