Calculate duration between two dates

This service calculates the duration, counting the day count and the number of days, months and years between two dates. Among other things, it can be used find how many days old you are and the weekday you were born. Also see the advanced duration calculator which supports time as well.

Help and example use

• How to use the Date Duration Calculator
• Some typical uses for the date calculators

Date Calculators

• Time and date duration – Calculate between exact times (not just dates)
• Date calculator – add or subtract days, months, years
• Birthday calculator – Find when you are 1 billion seconds old

Related links

• Date/calendar related services – overview
• Calendar Generator – Create a calendar for any year
• The World Clock – Current time all over the world
• Countdown to any date