Age Calculator

Find your age in every unit, handle leap years, save/share results.

Date of Birth: Calculate Age At:

Age is commonly counted in years, increasing on a person's birthday, the method most Western countries use.

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Some cultures have unique systems, like the traditional Chinese age where a newborn is considered one year old at birth and gains age annually on the Chinese New Year.

Calculating months and days can be tricky near month-ends due to varying month lengths. This calculator opts to count February 28 to March 28 as one month plus additional days for precision.

These conventions provide a balanced approach suitable for most age estimation needs.