About this tool
The Date Difference Calculator tells you exactly how much time lies between two dates — in total days, weeks, months and years. It is perfect for counting down to an event, working out project durations, tracking deadlines or calculating someone's exact age between two points in time.
How to use
- 1Pick the start date.
- 2Pick the end date.
- 3Read the difference in several units.
Benefits
- Days, weeks, months and years.
- Handles leap years correctly.
- Instant result.
Frequently asked questions
Does it include both end dates?+
It counts the full span between the two dates you choose.
Can I use past dates?+
Yes, any two dates work, past or future.