Date & Time Tools
Date Difference Calculator
Find the exact duration between two calendar dates in years, months, weeks and days.
Dates
Duration
Y / M / D
6y 7m 28d
Total days
2,432
Total weeks
347
Total months
79
About this tool
The span between two dates reuses the same calendar age algorithm: leftover days borrow from the previous month’s length.
How to use
- Pick a start date.
- Pick an end date on or after it.
- Read Y/M/D and totals.
Formula and methodology
Same as the age calculator, with any two dates instead of birth and today.
Worked example
15 January 2020 to 15 January 2026 is 6 years, 0 months, 0 days.
Frequently asked questions
What if the end is before the start?+
The tool shows no result instead of a negative age.
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