Days Between Dates Calculator

Count the number of days between two dates. Use this free days between dates calculator to find total days, weeks, months, years, weekdays, and weekend days between dates.

Calculate Days Between Dates

Days between dates = end date minus start date, with optional start date and end date inclusion.
Your result will appear here.

How the days between dates calculator works

Start date:
Enter the first date in the date range.

End date:
Enter the second date in the date range.

Include options:
Choose whether the start date, end date, or both dates should be counted.

Final count:
The calculator shows total days, approximate weeks, months, years, weekdays, and weekend days.

Why use a days between dates calculator?

A days between dates calculator is useful for deadlines, project timelines, trips, billing periods, event planning, school schedules, countdowns, and tracking how many days have passed between two calendar dates.

It helps avoid manual counting errors, especially when date ranges cross months, years, or leap years.

What your result means

Your result shows the number of days between your selected start and end dates. It also includes approximate weeks, months, years, weekdays, and weekend days for easier planning.

Days between dates calculator tips

Frequently asked questions

What is a days between dates calculator?

A days between dates calculator counts how many calendar days are between two selected dates.

Should I include the start date?

Include the start date if the first date should count as a full day in your total.

Should I include the end date?

Include the end date if you want the final date to count, such as for deadlines, trips, billing periods, or events.

Does this account for leap years?

Yes. The calculator uses calendar date math, so leap years are included automatically.