Date Difference Calculator
Find the difference between two dates in days, weeks and calendar years, months and days — great for countdowns and project timelines.
Pick two dates to see the difference
This tool runs entirely in your browser. Your input is never uploaded.
How to use
- 1Pick a start date and an end date
- 2Results update live with total days, weeks and calendar years, months and days
- 3Pair it with the time zone converter when you need exact moments
FAQ
What if the end date is earlier than the start date?
The tool uses the absolute difference and shows a warning so you can spot a swapped range.
How is the calendar breakdown calculated?
It borrows across months on the calendar. For example, January 31 to March 1 is 1 month and 1 day, not a simple division by 30.
Does it include the start or end day?
The day count is the interval between the two dates, excluding the start day. Add 1 yourself if both ends should count.
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