Date Add / Subtract

Add or subtract years, months, weeks, days and time from any date.

How to add or subtract time from a date

1Pick a starting date and time.
2Choose add or subtract and enter the amounts.
3Read the resulting date and time instantly.
How are months handled?

Months are added by calendar. Adding one month to 31 January lands in early March, which matches standard date math.

Does it account for daylight saving?

Calculations use your local calendar, so day and larger units behave naturally across DST changes.