Calculate exact age in years, months, days and total days.
People often need a precise age (down to years, months, and days) rather than a rounded number of years.
Your birth date is only used locally in your browser.
Anyone verifying age eligibility, planning celebrations, or filling out forms.
Three calculators in one: percent-of, X is what % of Y, and percentage change.
Days, weeks, months, and years between two dates.
Calculate Body Mass Index in metric or imperial units.
Calculate grade point average from letter grades on a 4.0 scale.
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