Body mass index relates weight to height and offers a broad screening measure of body size.
| Input | What it means |
|---|---|
| age | Age in the time unit shown; most adult equations use completed years. |
| Height | Vertical body or object measurement. Select its actual unit before calculating. |
| Weight | Measured mass in the chosen unit; pounds and kilograms are not numerically interchangeable. |
At 70 kg and 1.75 m, BMI = 70/1.75² ≈ 22.86.
Use this as a starting reference for planning or checking quantities. Where the page estimates a person’s needs, the estimate should be considered alongside actual intake, trends and individual circumstances.
It is a reference or model-based estimate. Actual needs depend on the person, the measurement method and the situation; a planning estimate should not be treated as a prescribed intake.
Different tools use different reference tables, equations, ingredient densities or activity assumptions. Compare those choices as well as the input amounts.
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