Days Between Dates — Inclusive Count, Free | How to use and interpret results
Measure elapsed calendar days between two dates and view an equivalent week count. This distinguishes date subtraction from counting both dates as days of an event.
- Runs in your browser
- Nothing is uploaded
- No signup; device limits apply
Numbers stay on your device. Nothing is sent to a server.
How to use this tool
Select start and end dates. If the end precedes the start, distinguish signed differences from absolute displays, and use a weekday calculator when weekends must be excluded.
Results and examples
2026-01-01 to 2026-01-02 has a difference of one day. An event may span two named dates while the elapsed date subtraction still equals one.
Worked example
2026-01-01 to 2026-01-02 has a difference of one day. An event may span two named dates while the elapsed date subtraction still equals one.
Limitations
- This is not an inclusive event-day or working-day count.
- No public-holiday calendar or daily work-hours policy is consulted.
Fields
| Field | Guidance and constraints |
|---|---|
| Start date | Check the unit and format displayed beside this field. |
| End date | Check the unit and format displayed beside this field. |
Data handling
Processing stays in the current browser tab; the site does not upload tool input for the calculation itself.
Sources
Frequently asked questions
Why is January 1 to January 2 one day?
2026-01-01 to 2026-01-02 has a difference of one day. An event may span two named dates while the elapsed date subtraction still equals one.
Can this count only working days?
This is not an inclusive event-day or working-day count. No public-holiday calendar or daily work-hours policy is consulted.
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