Date difference calculator

Find the signed number of calendar days between two dates.

Numbers Stateless

Enter valid ISO dates from year 0001 to 9999.

How it works and examples

Enter valid ISO dates from year 0001 to 9999. The result is end minus start, excluding the starting day. Example: 2024-02-28 to 2024-03-01 is 2 days. Reversing the dates changes the sign. Calendar dates have no time zone or daylight-saving adjustment.