What is Date Difference?
Count the time between two dates. Enter a start and end date to see the gap in days, weeks, approximate months and years — useful for deadlines, notice periods, project planning and countdowns.
How to use Date Difference
- Enter the first date.
- Enter the second date — today is filled in by default.
- Read the difference in days, weeks, months and years.
Why use this tool?
Several units at once
“How many weeks until launch” and “how many days of leave” are different questions about the same gap. All the units are shown together.
Order does not matter
The difference is always positive, so you can enter the dates either way round without getting a negative result.
Frequently asked questions
Why are months shown as approximate?
Months vary between 28 and 31 days, so a month count from raw days is an average (30.44 days). The day count is always exact.
Are both dates included in the count?
The result is the gap between the dates. If you need to count both the first and last day inclusively, add one to the day total.
Is this tool really free?
Yes, completely free with no limits, no watermarks, no account and no trial period. Because everything runs on your own device, there are no server costs to pass on to you.