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Days between dates calculator

Count how many days, weeks and months are between two dates.

Default: today

Difference
9,714 days
In weeks1,387.7
In months (approx.)319.1
In years (approx.)26.6
In hours233,136

The count considers whole days between the two dates.

How the calculation works

The result is the whole-day difference between the start and end dates, following the real calendar — months of 28–31 days and the Feb 29 of leap years. It is not a multiply-by-30 or 365 shortcut: each month contributes its exact day count.

Exclusive vs inclusive count

By default the result is the "exclusive" difference: Jan 1 to Jan 10 is 9 days. To count both endpoints, add 1.

Step-by-step example

Jan 1, 2026 to Feb 1, 2026: January has 31 days, so the difference is 31 days. Jan 1 to Mar 1 would be 31 + 28 = 59 days.

Common uses

  • Counting deadlines: contracts, warranties, returns.
  • Days of vacation, travel or a project.
  • How many days until a date (birthday, event, exam).

To count only business days (no weekends or holidays), use the business-days calculator.

Examples

  • Jan 1, 2026 to Dec 31, 2026: 364 days (2026 is not a leap year).
  • Jun 10 to Jun 20: 10 days; including both endpoints, 11.

Frequently asked questions

Is the end date included?

It is the whole-day difference; add 1 if you want to include both endpoints.

How to count only business days?

This one counts calendar days. To exclude weekends and holidays, use the business-days calculator.

Does it account for leap years?

Yes. Ranges crossing Feb 29 include that extra day automatically.

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Updated on June 17, 2026 · by Rafael Rossi · Methodology & sources