Calculate days between dates or add/subtract time
Enter start and end dates
Select or type two dates to calculate the difference between.
View the difference
See the difference in days, weeks, months, and years.
Add or subtract days
Use the date math feature to add or subtract days from a date.
Yes, the Date Calculator is completely free with no limitations. Calculate date differences or add/subtract time as often as you need without registration.
Yes, all date calculations happen locally in your browser using JavaScript. No dates or personal information are sent to any server.
You can calculate the difference between two dates in days, weeks, months, and years. You can also add or subtract days, weeks, months, or years from any date to find a future or past date.
Yes, all calculations properly account for leap years, varying month lengths, and calendar rules. The tool uses standard date libraries to ensure accurate results.