Date Difference Calculator
Find the exact time between two dates.
The order does not matter — the difference is the same either way.
How to use
- 1 Enter the first date.
- 2 Enter the second date.
- 3 Read the breakdown in years, months and days.
- 4 Copy the total in weeks, hours or minutes if you need it.
About Date Difference Calculator
The Date Difference Calculator measures the span between any two dates and reports it several ways at once: a plain-English breakdown into years, months and days, and the same span expressed entirely in weeks, in hours and in minutes.
You enter a start and an end date, and the result updates instantly.
The order does not matter — the tool always reports the magnitude of the gap, so swapping the two dates gives the same answer.
People reach for this constantly.
You might be working out how long ago a contract was signed, how much notice a date represents, the length of a project, or simply the gap between two events.
Counting by hand across month boundaries and leap years is fiddly and easy to get wrong, especially when February and the 31-day months do not line up.
This tool handles those edge cases by counting whole calendar months and clamping to the end of short months, so a span from the 31st reads naturally rather than skipping days.
Dates without a time are treated as midnight UTC, which keeps the day count stable no matter what timezone your computer is set to.
Everything runs locally in your browser — nothing is uploaded — and the calculation is deterministic, so the same two dates always produce the same result.
FAQ
Does the order of the dates matter?
No. The tool reports the size of the gap, so entering the dates in either order gives the same result.
How are months counted?
It counts whole calendar months and clamps to the end of short months, so a span starting on the 31st is measured the way people naturally count it.
Is the day count affected by my timezone?
No. Date-only values are anchored to UTC midnight, so the count of whole days is the same everywhere.