Everyday tool
Date Difference Calculator
Use this free date difference calculator for a clear, instant answer. Enter your numbers and the result updates immediately — no sign-up, everything private in your browser.
Use this free date difference calculator for a clear, instant answer. Enter your numbers and the result updates immediately — no sign-up, everything private in your browser.
The result measures elapsed calendar time between two dates. Inclusive counting may be one day higher.
A visual summary that updates with your calculation.
Date Difference calculator gives an instant estimate from the values entered above. Use the result as a starting point and review the assumptions and limits below.
Enter valid dates in the requested order and check the counting convention.
Calendar calculations follow the browser calendar and do not determine legal deadlines.
This calculator measures elapsed time between two calendar dates.
It subtracts the earlier date from the later date and reports the exact day count, with a calendar breakdown where available.
From January 1 to January 31 is 30 elapsed days when the start date is excluded.
The displayed result helps distinguish elapsed days from inclusive counting.
Results can differ if both endpoints should be counted. Time of day, time zones and daylight-saving changes are not included in date-only calculations.
Method reference: Calendar duration method reference. Fynzo explains and implements the calculation independently; the linked organization does not endorse this website.
Reviewed by: Yasser Chahir, Fynzo editor. Last reviewed: July 31, 2026.