Date Difference Calculator
Pick two dates to see the number of days, weeks, and the full years-months-days breakdown between them.
How to use it
- Pick a start date Use the first date picker.
- Pick an end date The order doesn't matter — the gap is the same either way.
- Read the difference See total days, weeks, and a years-months-days breakdown.
Examples
| 2024-01-01 to 2024-12-31 | 365 days |
|---|---|
| 2024-02-28 to 2024-03-01 | 2 days |
About this tool
This calculator counts the time between two calendar dates — useful for deadlines, anniversaries, projects and planning. It shows the total number of days and weeks, and a breakdown in years, months and days.
The order of the dates does not matter, and leap years are handled correctly. Everything is calculated locally in your browser.
Frequently asked questions
Are both dates included in the count?
The result is the number of days between the two dates. A start and end one day apart gives 1 day.
Does it handle leap years?
Yes. Day counts span February 29 and varying month lengths correctly.
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Updated June 12, 2026