Date Difference Calculator
Count the days, weeks, and months between two dates.
Find out exactly how much time is between two dates — in years, months, and days, plus totals in days, weeks, hours, and minutes. Great for deadlines, anniversaries, and project planning.
Pick a start and end date to see the duration.
Runs entirely in your browser — nothing is uploaded.
How to use the date difference calculator
- 1Pick a start date.
- 2Pick an end date (or use today).
- 3Read the full breakdown of the duration.
Frequently asked questions
Does the count include both the start and end date?
It measures the span between the two dates, so the number of days is the difference between them.
What if I enter the dates in the wrong order?
No problem — the tool always shows a positive duration regardless of which date is earlier.