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Time & Date

Date Difference Calculator

Date Difference

Count days between two dates.

Results update as you type.

How to use

Enter a start date and an end date as YYYY-MM-DD. The result shows the number of days between them.

Formula

days = end date − start date (calendar days)

Worked example

  1. From 2026-01-01 to 2026-01-11 → 10 days.

Assumptions

  • The count is whole calendar days, not business days.
  • Time of day is ignored; only the date parts matter.

FAQs

Is the end date included?
The result is the difference between the two dates. From the 1st to the 11th is 10 days.
Does this skip weekends?
No. Use the Business Days calculator when you need working days only.
Can the end date be before the start?
Yes. A negative or absolute difference may be shown depending on order; swap the dates if you want a positive span.
What about months and years?
This tool focuses on day count. For age in years, months, and days, use the Age Calculator.

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