Days Between Dates
Enter two dates and get the number of days between them. We count calendar days from the first date to the second. Handy for project length, contracts, or how long until an event.
Calculate days
Enter both dates and click Calculate.
How it works
We convert both dates to timestamps, take the difference in milliseconds, and divide by 24×60×60×1000 to get whole days. The result is the number of calendar days between the two dates.
When to use it
Use it for project length, interest accrual, or how long until an event. Handy for contracts and deadlines.
Frequently asked questions
- Are the dates inclusive? We count the difference so that the same date gives 0 days; the next day gives 1 day.
- What about time zones? We use the date only; times are ignored.