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.
Design changes: What is new and why?
From Tuesday, September 11, 2001
Added 17 months, 59 weeks, 7 days
Normalized to 1 year, 5 months, 420 days
Result: Tuesday, April 6, 2004
For the result above, the larger units (months/years) are added before the smaller units (days).Alternative result: Monday, April 5, 2004
For the result above, the smaller units (days) are added first◀ Make adjustmentStart Again ▶
Make a new calculation
- Modify the current calculation
- New calculation with Tuesday, April 6, 2004 as starting point
- New calculation (no time)
- New calculation with both date and time included
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Help and example use
Date Calculators
- Date Calculator – Add or subtract days, months, years
- Add to or subtract from a date and time
- 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
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