Ideal Weight Calculator
Estimate a healthy target weight for your height and sex using the four standard clinical formulas (Robinson, Miller, Devine, and Hamwi) plus the healthy BMI range. Runs in your browser.
Estimated ideal weight
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These formulas are defined from 5 ft (152.4 cm) up, so below that they only give the 5 ft base weight. Use the healthy BMI range instead.
Show the math
Each formula starts from a base weight at 5 ft and adds per inch above it:
ideal = base + per-inch × (height − 60 in)
The four formulas disagree by a few kilos because they were fitted to different populations, so the headline figure is their average. Treat the spread (and the healthy BMI range) as a sensible band rather than a single target. The healthy BMI range runs from a BMI of 18.5 to just under 24.95, the highest BMI that still shows as 24.9.
What this does
An ideal weight calculator estimates a healthy target weight for your height and sex using the four standard clinical formulas (Robinson, Miller, Devine, and Hamwi) alongside the healthy BMI range.
How to use it
- Choose your sex and units.
- Enter your height.
- Read all four formula estimates.
- Compare them against the healthy BMI range.
How it works
Each formula sets a base weight at five feet of height and adds a fixed amount per inch above that, with different constants for men and women. Showing all four gives a sensible band rather than one number.
Understanding your result
Ideal weight is a rough reference, not a strict goal. Healthy weight depends on muscle, frame, and body composition, so treat the range as guidance.
Example
For a 5ʼ10ʺ man the four formulas give about 155–165 lb (average about 159 lb), inside the healthy BMI range of about 129–174 lb for that height.
Sources & methodology
- CDC, Adult BMI Categories, Healthy weight ranges and BMI
Last updated .
Frequently asked questions
Which ideal-weight formula should I use?
There is no single "correct" one, Robinson, Miller, Devine, and Hamwi each give slightly different figures. The tool shows all four plus the healthy BMI range so you can see a sensible band rather than one number.
How do the formulas work?
Each sets a base weight at 5 feet of height and adds a fixed amount per inch above that, with different constants for men and women.
Is ideal weight a strict goal?
No. It is a rough reference. Healthy weight depends on muscle, frame, and body composition, so treat the range as guidance, not a target to hit exactly.
Is my data saved?
No. All calculations happen locally in your browser.
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