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Calculators

Practical calculators for mortgage, income tax, BMI, date difference, and common unit conversion.

BMI Calculator

Calculate BMI and classify the result using common Chinese ranges.

22.5Normal

Reference Chinese standard: underweight <18.5, normal 18.5-24, overweight 24-28, obese >=28.

Most tools here run locally in your browser and do not upload your content; the few that require network access only read public information. For security reasons, network tools do not support queryinglocalhostand other intranet addresses. Feel free to bookmark this page to keep these utilities handy.