Add or subtract days from a date
Add or subtract a number of days, weeks, months, or years from a starting date.
Calculated in your browser. Nothing you enter is sent to a server.
Fullscreen
Start date
Add or subtract
Amount
Unit
Enter a start date and amount to see the resulting date.
01
Enter the start date
Pick the date you're calculating from.
02
Choose an amount and unit
Days, weeks, months, or years. And whether to add or subtract it.
03
Read the resulting date
Shown in full with its day of the week.
Frequently asked
How are months and years handled around short months?
The day of month is clamped to the target month's length. For example, 31 January plus one month lands on 28 (or 29, in a leap year) February instead of overflowing into March.
Can I subtract instead of add?
Yes. Use the Add/Subtract toggle to switch direction; the amount and unit fields work the same either way.
Does this account for daylight saving time?
This tool works in whole calendar days, weeks, months, and years, so daylight saving shifts (which are a time-of-day effect) don't apply here.