Date Difference Calculator
Calculate the distance between two dates. Free, no signup.
How It Works
Select a start and end date and click Calculate. The exact difference is shown in days, weeks, months, years, and hours, and the breakdown gives the precise duration in years, months, and days. Real calendar dates are used, so leap years and varying month lengths are handled automatically.
Common Uses
- How many days until an event, deadline, or holiday
- Duration of a project, trip, or subscription
- Days between a hire date and today
- Time between two milestones or anniversaries
- Age in days between a birthday and any date
Frequently Asked Questions
How do I calculate the number of days between two dates?
Pick a start date and an end date, then click Calculate. The tool shows the exact number of whole days between them, along with the equivalent in weeks, months, years, and hours.
What is the difference between two dates?
The difference is the elapsed time from the start date to the end date. This calculator reports it as the count of full days between the two dates, then breaks that same span down into years, months, and days.
Does the calculator count both the start and end date?
It measures the span from the start date to the end date, so the start day is not counted as a full day. If you need to include both endpoints (for example counting inclusive days off), add one to the result.
Does it account for leap years?
Yes. The calculation uses real calendar dates, so leap years and the different lengths of each month are handled automatically.
Can I calculate how many days until a future date?
Yes. Set the start date to today and the end date to your target date to see how many days, weeks, and months remain until an event, deadline, or holiday.