Body Composition
Compare multiple legacy ideal-weight formulas and view a practical range instead of one fixed number.
68.7 kg – 72 kg
The chart centers the healthy BMI weight band and places the formula midpoint inside it.
Devine: 70.5 kg
Robinson: 68.9 kg
Miller: 68.7 kg
Hamwi: 72 kg
Formula set: Devine, Robinson, Miller, and Hamwi (reference estimates, not prescriptions).
Contract, discovery endpoints, and developer notes for agent use.
Always available for agents
Tool contract JSON
https://aifithub.io/contracts/ideal-weight-calculator.jsonStable input and output contract for this exact tool.
Human review
People can use the browser page to sense-check outputs and charts, but agents should still execute against the contract and discovery endpoints.
{
"tool": "ideal_weight",
"gender": "male",
"height_cm": 178,
"frame_size": "medium"
} No. Start with /agent-tools.json, then follow the tool's contract URL. The page UI is for human review, not parameter discovery.
Every tool opens in Quick Start first. Advanced Controls keeps the same scenario, reveals more assumptions or diagnostics, and every tool keeps AI integrations inline below the instructions.
Open it when a human wants to sense-check the output, review the chart, or keep exploring related tools after the calculation finishes.
Shows Devine, Robinson, Miller, and Hamwi formula estimates as a range rather than a single rigid target.
Yes. This tool supports both metric and imperial units and remembers your preference.
No. This tool provides general fitness estimates and should not replace medical guidance.
Yes. AI Fit Hub tools are free, no-signup browser tools. Inputs stay in your browser unless you choose to share a URL.
No. These outputs are general fitness estimates — not medical advice.
Yes. Every tool supports both systems and remembers your preference in localStorage.
Related Resources
Every link here is tied directly to Ideal Weight Calculator. Use the explanation, formula, examples, and benchmarks to pressure-test the calculator output from first principles.
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