How to use the Date Difference Calculator
- 1Pick the first date.
- 2Pick the second date.
- 3Read the difference in days, weeks, months and years.
Supported formats and limits
- Day counts use calendar days and include leap years correctly.
- Month and year breakdowns follow the calendar, not fixed 30-day months.
- The order of the dates does not matter.
Common uses
- Counting days until a deadline.
- Working out an exact age.
- Measuring the length of a project.
Frequently asked questions
Are leap years handled?
Yes. Day counts are computed from real calendar dates, so 29 February is counted whenever it occurs.