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54 tools
CDC provides a free adult BMI calculator using either U.S. customary or metric units. It returns your BMI value and corresponding category, and includes context on interpretation and limitations. The tool is publicly accessible with no account or payment required.
CalculatorSoup’s BMI tool includes both adult and child BMI modes, with child and teen interpretation based on CDC percentile categories for ages 2–20. It supports multiple unit formats and gives immediate BMI output. Access is free with no mandatory paid subscription.
This free BMI calculator supports male/female selection, multiple unit systems, and instant BMI classification. It includes healthy range guidance and expanded metrics like BMI Prime and Ponderal Index. The page notes adult BMI categories used for men and women.