Date calculator: Add to or subtract from a date
This service enables you to add or subtract days, months and years to a date to calculate a past or future date.
Help and example use
- Duration between two dates – Calculates number of days
- Time and Date Duration – Calculate between exact times (not just dates)
- Birthday Calculator – Find when you are 1 billion seconds old
- Weekday Calculator – What Day is this Date? – Find the weekday for any date
- Week Number Calculator – Find the week number for any date