Days Between Dates Calculator
Count the days between two dates, or add and subtract days, months and years.
Days between two dates
Add or subtract time
A free date calculator for everyday questions: how many days are there between two dates, how many working days, and what date is it in 90 days? Results update instantly and nothing leaves your browser.
How does the date calculator work?
The number of days between two dates is the difference between their calendar days; you can include the end date to count both the first and the last day. Years, months and days are calculated by counting full calendar months first, then the remaining days.
Working days count Monday to Friday between the two dates and do not subtract public holidays, which differ by country and year. When adding months, a day that does not exist in the target month (such as the 31st) is moved to the last day of that month.
How to use it
- Pick the two dates to see the days, weeks, months and working days between them.
- Tick “Include the end date” to count both the first and last day.
- To find a future or past date, choose a start date, add or subtract, and enter years, months and days.
Frequently asked questions
- Does it count the start and end date?
- By default the result is the number of days from the start date to the end date, so one day apart equals 1. Tick “Include the end date” to count both days.
- Are public holidays excluded from working days?
- No. Only weekends (Saturday and Sunday) are excluded because holidays vary by country, region and year.
- Is my data sent anywhere?
- No. The calculation runs entirely in your browser.