Date Calculator
Days between dates; add/subtract days.
Processed locally in your browser — your files never leave your device.
How to use
- 1Pick a mode: difference or add/subtract.
- 2Enter the date(s) and read the result.
Find the number of days between two dates, or add/subtract days from a date to land on the resulting calendar day.
Frequently asked questions
Is the count inclusive?
The difference counts full 24-hour midnights between the dates (exclusive of the start day), the standard convention.