HEALTH TOOL
Ideal Weight Calculator
Estimate a healthy weight range from height using four published formulas.
Ideal weight range
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By formula (Devine / Robinson / Miller / Hamwi)
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About this tool
Estimate a healthy weight range from height and sex using four well-known published formulas (Devine, Robinson, Miller, and Hamwi). These are population-level estimates, not individual medical targets — body composition, frame size, and muscle mass all matter too.
Frequently asked questions
- Why do the four formulas give different numbers?
- Each was developed from a different reference population and study era, so they don't perfectly agree. The range shown spans the lowest to highest of the four estimates.
- Is this a medical recommendation?
- No — these formulas are decades-old clinical estimation tools (originally created for medication dosing), not personalized health guidance. Talk to a healthcare provider for individual advice.
- Do these formulas work for very short or very tall heights?
- They're calibrated around average adult heights (roughly 5' to 6'6") and become less reliable well outside that range.