Days Between Dates Calculator
Count the exact calendar days between two dates.
Answer
Choose dates to calculate.
Personal work calendar
These are your manual rules, not an official national holiday calendar. Additional working dates override exclusions and weekly days off. Save before changing language.
Use YYYY-MM-DD, one date per line (maximum 500 per list).
How to use
- Choose the start date.
- Choose the end date.
- Decide whether to include the end date.
- Read the total days and calendar difference.
Quick reference
The calculator compares date-only values at midnight UTC, so daylight saving time and local time-of-day changes do not add or remove an hour. By default it counts the gap from the start date up to, but not including, the end date. Turn on Include end date when both selected dates should count as days in the range.
| Scenario | Default result | With end date included |
|---|---|---|
| Monday to Tuesday | 1 day | 2 days |
| Monday to next Monday | 7 days | 8 days |
| Same start and end date | 0 days | 0 days |
| Offline | The calculation runs in your browser. The route must have loaded once before it can reopen from cache without a connection. |
|---|---|
| Browser limits | Date results use local calendar values in the browser; confirm timezone and date inputs before relying on the answer. |
Questions and answers
Can I include the end date?
Yes. Turn on include end date when you want both selected dates counted.
Does it handle leap years?
Yes. The calculator uses real calendar dates and leap years.
Are times of day included?
No. This page compares date-only values at calendar-day precision.