Age Calculator — Accurate & Precise

Age Calculator — Calculate Your Age

Calculate exact age (years, months, days, hours, minutes, seconds). Timezone-aware and printable.

Enter birth details

Birth date & time Timezone (optional)

If left empty, your browser’s timezone will be used.

Precision

Tip: use the time field for more precise results. For historic dates (pre-1970) the display is still supported but timezone offsets may vary by region.

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How calculation works

This tool computes age by calendar math: it compares year, month, and day components to produce exact years/months/days and uses milliseconds difference to compute total days/weeks/hours/minutes/seconds. Leap years and variable month lengths are accounted for by using Date arithmetic.

Accurate for ages across modern Gregorian calendar usage. This is informational and not legal or medical advice.

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