How do you calculate days between two dates?

Subtract the start date from the end date. Our calculator counts exact calendar days, with an option to include or exclude the end date. It also calculates weeks, months, hours, and business days automatically.

What are business days?

Business days are Monday through Friday, excluding weekends. They are important for work schedules, legal deadlines, and banking calculations.

How many days are in a year?

A regular year has 365 days and a leap year has 366 days. Leap years occur every 4 years (except years divisible by 100, unless also divisible by 400).

How to calculate weeks between two dates?

Divide the total number of days by 7. For example, 30 days is 4 weeks and 2 days.

How many business days are in a month?

A typical month has between 20 and 23 business days, depending on how many weekends fall in that month.

Does the calculator count the end date?

By default, the calculator does not include the end date. You can enable "Include end date" if you need to count both endpoints.

Days Between Dates Calculator

Calculate how many days, weeks, months, and hours between two dates. Includes business days.

Start date

End date

Include end date in count