Date Difference Calculator
Find the exact number of days — and the difference in words — between any two dates.
Difference (days)
In words
Weeks
How it works
Both dates are parsed to millisecond values; their difference is divided by 86,400,000 to get days.
Everything is computed locally in your browser — nothing is uploaded.
Frequently asked questions
How is the difference counted?
The tool subtracts the two dates and reports the whole number of days between them, plus a words breakdown and the number of weeks.