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Ideal Body Weight Calculator (Devine, Robinson, Miller, Hamwi)
x402
Ideal Body Weight Calculator (Devine, Robinson, Miller, Hamwi) is a paid API for AI agents from fitness-calc.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-30).
Calculates ideal body weight in kg and pounds using four clinical formulas (Devine, Robinson, Miller, Hamwi) given height and sex.
Price / call$0.02
Success—
StatusUnknown
How this service works
Ideal body weight by the Devine, Robinson, Miller and Hamwi formulas from height and sex, in kg and pounds.
Output
Returns ideal body weight estimates in kg and lb from four clinical formulas (Devine, Robinson, Miller, Hamwi), plus an average across them, the input height in both cm and inches, a summary verdict, and a medical disclaimer. May include degraded flag and reasons if the calculation is incomplete.
Example use cases
Personal ideal weight check
“I'm a woman, 5 feet 4 inches tall — what's my ideal body weight according to the Devine, Robinson, Miller, and Hamwi formulas? Give me the numbers in pounds.”
Clinical nutrition intake form
“I need the ideal body weight for a male patient who is 175 cm tall, using all the standard clinical formulas in kilograms.”
Fitness app onboarding benchmark
“For a male who is 6 feet tall, what do the four ideal weight formulas say his target weight should be in both kg and lb, and what's the average across them?”
Technical details
Endpoint
GEThttps://fitness-calc.x402tookit.com/ideal-weight?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need clinically-grounded ideal body weight estimates across multiple established formulas simultaneously. It's ideal for health, fitness, and nutrition applications that need to present multiple reference standards rather than a single number, or that need both metric and imperial outputs. Prefer it over BMI-based tools when the goal is a weight target rather than a weight classification.
Side effects
- Missing required 'sex' parameter returns error
- Height not provided may result in null or degraded results
- Invalid sex value (not 'male' or 'female') may cause unexpected behavior
- Mixing metric/imperial parameters (e.g. providing both height and heightIn) may yield inconsistent results
- Very extreme height values may produce unreliable formula outputs
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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