A familiar situation
Compare the spread of four legacy height-based equations rather than treating one as a personal target.
How to use this calculator
- Enter height, equation sex term.
- Select Calculate to see the answer and its breakdown.
- Keep a scenario, change an input and compare the results.
Use consistent units and check the assumptions below before applying the result.
How ideal weight is calculated
The calculator evaluates Devine, Robinson, Miller, and Hamwi formulas using height above 5 feet, then averages their estimates. Each formula is a historical rule of thumb with a different derivation. For a 5 ft 8 in adult, the four equations can differ by several kilograms; the average summarizes them without implying a required weight.
Height-based Devine, Robinson, Miller, and Hamwi reference equations.For a 5 ft 8 in adult, the four equations can differ by several kilograms; the average summarizes them without implying a required weight.
Assumptions & useful context
Legacy height-based estimates; not an individualized healthy-weight target.
Health calculations are estimates for education. They cannot diagnose a condition or replace a clinician’s assessment. Individual needs vary, especially during pregnancy, illness and growth.
Frequently asked questions
Is this a healthy weight prescription?
No. These legacy equations do not account for body composition or an individual’s health context.
What if someone is shorter than 5 feet?
The equations can produce poor estimates outside their usual adult height context.