Date Difference Calculator
Count exactly how much time separates two dates. Pick a start date and an end date, and the calculator shows the gap as a total number of days, and also broken down into years, months and days, plus the equivalents in weeks and hours. There is an option to include the end date in the count, which matters when you are counting things like billing periods or event days rather than a pure duration. It correctly accounts for leap years and the differing lengths of months, so the result is precise rather than an approximation. This is useful for deadlines, anniversaries, project timelines, notice periods and age gaps. Everything is calculated locally in your browser, and no dates are ever sent anywhere.
How to use Date Difference Calculator
- Enter the start date.
- Enter the end date.
- Choose whether to include the end date.
- Read the difference in days, weeks, months and years.
Frequently asked questions
What units does it report the gap in?
It shows the difference as days, weeks, months and years between the two dates you enter.
Does it include the end date in the count?
You can choose. There is an option to include the end date, which adds one day to the total.
Does it handle leap years correctly?
Yes. The day count accounts for leap years and varying month lengths, so the totals are accurate.
What is Date Difference Calculator?
Count exactly how much time separates two dates. Pick a start date and an end date, and the calculator shows the gap as a total number of days, and also broken down into years, months and days, plus the equivalents in weeks and hours.
Is Date Difference Calculator free to use?
Yes. Date Difference Calculator is completely free, with no sign-up and no usage limits.
Does Date Difference Calculator work in a web browser?
Yes. Date Difference Calculator runs in any modern web browser. There is nothing to download or install.
Is my data private with Date Difference Calculator?
Yes. Date Difference Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.
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