DATES & TIME · FREE TOOL
Days Between Dates Calculator
Find the exact number of calendar days between any two valid dates and see the same period expressed as full weeks plus extra days.
CALCULATE NOW
YOUR RESULT30 days
The calculation runs in your browser. Your entries are not saved.
HOW IT WORKS
A clear answer, with the method included.
How to use this days between dates calculator
- Enter the requested information in the fields above.
- Check that the values match your situation.
- Read the result, then copy it if you need it elsewhere.
The formula
The calculator converts both dates to calendar timestamps and divides their absolute difference by the length of one day.
Example
From 1 August to 31 August is 30 elapsed days. Reversing the dates gives the same result.
Good to know.
Does the order of the dates matter?
No. The calculator returns the absolute difference.
Are both dates included?
The result shows elapsed days between the dates. It does not count both endpoints as full days.
Can I calculate dates across years?
Yes, including leap years.
Last reviewed: 16 August 2026 · Report a mistake