Date Difference Calculator
Find the exact number of days, weeks, months and years between two dates, with an option to include the end day. Free date duration calculator — perfect for deadlines, anniversaries and planning. No signup.
Difference
30
days
Or in full:
0 years, 0 months, 30 days
Weeks
4.3
Months
1.0
Hours
720
How to use the Date Difference Calculator
- 1
Pick a start date.
- 2
Pick an end date.
- 3
Optionally include the end day.
- 4
See the difference in days, weeks, months and years.
Frequently asked questions
Does it include the end date?
By default it counts the gap between the two dates; tick 'include the end day' to count both endpoints.
Can I go backwards in time?
Yes — the order doesn't matter; the tool always shows the absolute difference.
How are months counted?
The full breakdown counts calendar years, months and days; the 'months' figure elsewhere uses an average month length for a quick estimate.
Tips & discussion
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