Date & Time tool
Date Difference Calculator
Measure the time between two calendar dates.
How to use Date Difference Calculator
Date difference is the amount of time between two calendar dates. It can be measured in days, weeks, months, or years depending on the purpose.
Basic idea
End date - Start date = Difference in time
Why can month difference vary?
Months have different lengths, so month-based difference may not always match a fixed number of days.