Time fiddlers

Date Difference

Calculate the exact number of days, weeks, or months between two calendar dates.

Measure a calendar gap

Enter a start and end date. The difference updates as days, weeks, and whole calendar months without leaving this browser tab.

Start date

Use YYYY-MM-DD, MM/DD/YYYY, or Month DD YYYY.

End date

Reversed dates are okay; the direction is noted.

Include the end date Counts both boundary dates, useful for trips, streaks, and bookings.

Difference

Calendar span

Enter two dates to compare.

Total days-

Weeks-

Calendar months-

Direction-

Enter a start and end date to calculate the gap.

How months are counted

Calendar months count whole month boundaries first, then the remaining days. Weeks and decimal months are derived from the total day count.