Everyday Calculators
Calculate percentages, chronological age, BMI, date differences, and unit conversions with transparent formulas.
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Percentage Calculator
Solve three everyday percentage problems: X% of Y, X is what % of Y, and percentage increase/decrease from X to Y.
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CALC
Age Calculator
Calculate exact chronological age in years, months, and days between a birth date and any target date.
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CALC
BMI Calculator
Calculate Body Mass Index (BMI) using Metric (kg/cm) or Imperial (lb/ft/in) units with WHO adult reference ranges.
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CALC
Date Difference Calculator
Calculate the exact duration between two calendar dates in years, months, days, weeks, and business days.
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CALC
Unit Converter
Convert between common Length, Weight/Mass, and Temperature units with exact conversion factors and formulas.
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