Date Difference Calculator
Calculate the exact time between two dates: years, months and days, plus total days, weeks, weekdays and weekend days. Dates can be in either order.
How to use this tool
- Enter the start and end dates (either order works).
- Tick “include the end date” if you want to count that day too.
- Press “Calculate difference” for the full breakdown.
Key features
- Calendar-accurate years, months and days.
- Total days, weeks plus remaining days, and an average-months estimate.
- Weekday and weekend-day counts — handy for leave planning.
- Leap years handled correctly.
Frequently asked questions
By default it counts the days between the two dates (exclusive of the end date). Tick “include the end date” to count both the first and the last day.
No problem — the tool detects it, swaps them, and tells you it did so. The result is the same either way.
It is an estimate based on the average month length of 30.4375 days, since real months vary from 28 to 31 days. The years/months/days breakdown above it is exact.
Related tools
Calculate exact age in years, months, days and more.
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