How to use Date Difference Calculator
- Choose the start date.
- Choose the end date.
- Read the duration in years, months and days and in total days and weeks.
About this tool
The result is given both as a calendar duration (for example 2 years, 3 months and 5 days) and as totals in days, weeks and hours. The end date is not counted unless you tick the option to include it.
Use it for project timelines, contract periods, work experience and countdowns.
Frequently Asked Questions
- Is the end date included?
- Not by default. Tick "include the end date" to count both the first and last day.
- What if the start date is after the end date?
- The tool swaps them and shows the same duration.
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