Calculate ideal weight range using Devine, Robinson, Miller, and Hamwi formulas.
Four classic formulas can assign different ideal weights to the same person. This calculator applies the Devine, Robinson, Miller, and Hamwi equations using height and the formula's male or female constants, then shows the individual estimates and their overall span. The result is often mistaken for a healthy BMI interval. It is instead a comparison of four height-based point estimates, none of which considers current weight, age, body composition, fitness, or medical history.
A concrete input and expected output from the current implementation.
Input
Male; height: 5 ft 10 in
Expected output
Devine: 73.0 kg; Robinson: 71.0 kg; Miller: 70.3 kg; Hamwi: 75.0 kg; formula range: 70.3 to 75.0 kg
This height is 10 inches above 5 feet. The calculations are 50 + 2.3 x 10 = 73.0, 52 + 1.9 x 10 = 71.0, 56.2 + 1.41 x 10 = 70.3, and 48 + 2.7 x 10 = 75.0 kg; the smallest and largest results define the 70.3 to 75.0 kg span.
At 5 feet, the male baselines for Devine, Robinson, Miller, and Hamwi are 50.0, 52.0, 56.2, and 48.0 kg. Each additional inch adds 2.3, 1.9, 1.41, and 2.7 kg, respectively. The female baselines are 45.5, 49.0, 53.1, and 45.5 kg, with corresponding additions of 2.3, 1.7, 1.41, and 2.2 kg per inch.
The same entered height is evaluated independently with all four formulas. Each calculation produces one weight estimate, and the calculator identifies the lowest and highest estimates as the formula range. That span describes disagreement among the equations. It is not a confidence interval, a tolerance around an average, or a BMI-derived healthy-weight category.
No. A BMI-based weight interval is calculated from selected BMI boundaries and height squared. This calculator instead takes the lowest and highest outputs from four ideal-weight equations. The two ranges can overlap, but they answer different mathematical questions and should not be treated as interchangeable health classifications.
There is no universally correct choice among them. Each formula uses different constants but the same limited inputs, so a result matching your height is not automatically an appropriate personal goal. Treat the four values as comparative estimates. Individual health or treatment decisions require information these equations do not include and may need clinical guidance.
The example and behavioral notes were checked against the browser implementation. Standards and primary references below define the relevant format, formula, or platform behavior.
Create customizable checklists with groups, due dates, and priorities for any project.
Design a printable daily planner with time blocks, goals, and priority sections.
Measure your typing speed in WPM and accuracy with real-time feedback and stats.
Pomodoro timer with built-in ambient noise (rain, cafe, forest) generated via Web Audio API oscillators.
Stay focused with a customizable Pomodoro timer featuring work and break intervals.
A precise stopwatch with lap tracking, split times, and exportable results.