Height-based adult reference
Ideal Weight Calculator
Estimate an adult reference weight from height using Devine, Robinson, Miller and Hamwi formulas, with a broader height-based healthy-weight range for context.
Your result
A clear reference without the clutter.
Enter your height to compare four traditional formulas. Current weight is optional and only adds a neutral position check.
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kg · comparison midpoint
Formula comparison ready
Your height-based reference is ready.
Current positionGeneral height-based reference
Below rangeWithin rangeUpper rangeAbove range
Classic formula estimate
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Lowest to highest result from four traditional equations.
General healthy-weight reference
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Height-based adult reference using BMI 18.5 to 24.9.
Reference points
Neutral comparisonsFormula minimum—Lower classic estimate
Comparison midpoint—Median of four estimates
Formula maximum—Upper classic estimate
These figures are references, not prescribed targets or predictions.
How to useSelect the formula profile and unit system, enter height, and optionally add current weight for a neutral comparison.
Select profileChoose the traditional male or female formula constants.
Select unitsUse Metric or US units for height and optional current weight.
Enter heightHeight is the only measurement required to create the estimate.
CalculateCompare four classic formulas and the broader height-based range.
Use the resultReview, copy, preview, print, or save the detailed reference report.
What your result meansNo equation can identify one perfect weight for every person. This calculator presents several established estimates together so their differences remain visible.
Classic formula range
The lowest and highest values from Devine, Robinson, Miller and Hamwi form the classic estimate range.
Comparison midpoint
The median of the four results provides one central comparison figure without claiming a required target.
General healthy-weight reference
A broader height-based range using adult BMI values from 18.5 to 24.9. The calculator does not display a BMI score.
Current position
When current weight is added, the page shows its neutral position relative to both reference ranges.
FormulaThe traditional equations use height above or below 5 feet. The profile changes the starting value and height adjustment.
Devine
Male: 50 + 2.3 × inches from 5 ft · Female: 45.5 + 2.3 × inches from 5 ft
Robinson
Male: 52 + 1.9 × inches from 5 ft · Female: 49 + 1.7 × inches from 5 ft
Miller
Male: 55.7 + 1.41 × inches from 5 ft · Female: 53.1 + 1.36 × inches from 5 ft
Hamwi
Male: 106 lb + 6 lb per inch · Female: 100 lb + 5 lb per inch
Healthy reference: minimum weight = 18.5 × height²; maximum weight = 24.9 × height², with height measured in metres.
Tips and common mistakesAccurate height entry and careful interpretation matter more than adding extra personal fields.
Useful tips
- Measure height without shoes and stand upright.
- Use the full range rather than focusing only on the midpoint.
- Add current weight only when a comparison is useful.
- Compare measurements under similar conditions.
- Consider body composition, strength, energy and medical context.
- Discuss major weight changes with a qualified adviser.
Common mistakes
- Treating the midpoint as a mandatory target.
- Assuming one traditional formula must be correct.
- Entering centimetres as metres or mixing unit systems.
- Using decimal feet instead of feet and inches.
- Using the adult calculator for children or teenagers.
- Using the estimate for medication dosing or clinical decisions.
Frequently asked questionsQuick answers about the formulas, the displayed range and the limits of a height-based estimate.
There is no single ideal weight for every person. This calculator provides a range from four traditional formulas and a broader height-based reference.
Devine, Robinson, Miller and Hamwi use different starting values and height adjustments. Showing all four makes that uncertainty clear.
No traditional formula is universally accurate for every body type. Use the range as general reference information.
The four formulas do not include age. This page is intended for adults aged 20 and older.
Only height and formula profile are required. Current weight is used solely to show a present reference position.
Not exactly. The classic formulas usually produce a narrower estimate than the broader height-based healthy reference.
They can view the estimate, but it may not represent body composition because height-and-weight methods cannot separate muscle from fat.
No. Medication dosing requires the correct clinical method and qualified adviser judgment.
No. Pregnancy-related weight guidance uses different information and should be discussed with a healthcare provider.
Not automatically. The midpoint is a comparison value, not a personal prescription or required target.