Days Between Dates
Count the days between two dates, with the result also shown in weeks and in calendar months and days.
- Days
- –
- Weeks and days
- –
- Months and days
- –
How it is calculated
- Days = end date − start date, counted on the Gregorian calendar (leap years included).
- Inclusive count adds 1, so 1 March to 1 March counts as 1 day.
- Weeks = days ÷ 7, with the remainder shown as days.
Worked example
From 1 January to 31 December 2026.
| You enter | |
|---|---|
| Start date | 2026-01-01 |
| End date | 2026-12-31 |
| Count the end date too? | No (difference) |
| You get | |
| Days | 364 |
| Weeks and days | 52 weeks, 0 days |
| Months and days | 11 months, 30 days |
Sources and checks
Last checked: 12 October 2026. This calculator passes 5 automatic tests before every release.
Results are estimates for information only and are not financial, tax or legal advice. Check important figures with a qualified professional before you act on them.