Age and Date Difference Calculator

Working out an exact age, or how many days are between two dates, is easy to get slightly wrong doing it by hand.

Enter a birth date and get an exact current age broken down into years, months, and days.

Or enter any two dates and get the precise difference between them, useful for deadlines, anniversaries, or countdowns.

See the total difference in days as well, useful for anything measured that way instead of years and months.

Handles leap years and varying month lengths correctly, avoiding the common small errors of manual date math.

A small, exact tool for a calculation that comes up more often than people expect.