Count the exact number of days between any two dates — for projects, contracts, pregnancies, anniversaries or just curiosity.
This free date-difference calculator counts whole calendar days between a start and an end date, then breaks the gap down into weeks and into years, months and days. It is handy for working out durations: how long until a deadline, how many days you have been together, the length of a trip, or the time left on a contract.
Counting down to a single future date instead? Use the Days Until tool or make a shareable live countdown.
Enter a start date and an end date above. The tool shows the exact number of days between them, the number of weeks, and a years-months-days breakdown.
No — the day count is the same in either order. The tool always shows the positive difference between the two dates.
It counts the days from the start date to the end date. For example, from the 1st to the 8th is 7 days.
Yes — the page URL stores both dates, so you can bookmark or send the exact calculation to someone else.