Use the Ideal Weight Calculator
Find your ideal body weight using four classic formulas (Devine, Robinson, Miller, Hamwi), adjust for frame size and compare with the healthy BMI weight.
- Free to use
- No signup
- Nothing to install
- Runs in your browser
Illustration. Open the tool for the real thing.
What is the Ideal Weight Calculator?
Enter your sex, height and frame size and see your ideal weight by four classic formulas, their average, and the weight range that corresponds to a healthy BMI of 18.5 to 24.9. Add your current weight to see how far you are from the average.
Formulas were designed for average adults, so use the range rather than a single number. Muscle, bone structure and age matter more than any formula.
3 steps to your result
Open the tool and follow along. Nothing to install.
What you get
Devine, Robinson, Miller, Hamwi.
Small, medium, large.
A practical target.
Both shown.
Optional.
AZRS tools are free to open and use.
Used for
Pick one to see how it fits.
How it compares
A plain look at this tool next to the usual alternative.
| This fitness tool | Desktop software | |
|---|---|---|
| Install | Nothing to install | Usually an app or program to install |
| Account | No signup | Depends on the product |
| Cost | Free to use | Free or paid, depends on the product |
| Where it runs | In your browser tab | On your computer |
Questions people ask
Is it the same as BMI?
No. BMI classifies weight for height; this shows target weights and the BMI-based range for your height.
Is it free and private?
Yes. Devine, Robinson, Miller & Hamwi formulas plus a healthy BMI range. Nothing needs an account, and everything is kept only in your own browser on this device. Choose sex and enter height. Select your frame size.
Which formula is best?
None is best for everyone; they were designed for average adults. The page shows all four and the healthy BMI range so you can see the spread.
How do I use the Ideal Weight Calculator?
1. Choose sex and enter height. 2. Select your frame size. 3. Optionally enter your weight. 4. Read the table and the healthy range.
Any tips for good results?
Aim for the healthy range, not one number. Athletes with muscle can be above the range and healthy. Use the frame size setting honestly; it moves the answer up or down.
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Try the Ideal Weight Calculator now
Devine, Robinson, Miller & Hamwi formulas plus a healthy BMI range. Free to use.
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