Days Between Dates Calculator

Choose two dates to count the exact calendar days, weeks, weekdays and weekend days between them.

01
How many days are there betweenand?

Standard elapsed-day counting is used by default. Turn on inclusive counting when both boundary dates should count.

Calendar span—
Weeks + days—
Weekdays—
Weekend days—
Direction—

How to calculate days between two dates

This date difference calculator measures elapsed calendar days from the first date to the second. If you select inclusive counting, one day is added so both boundary dates are included in the total.

ExampleAugust 1 to August 31 is 30 elapsed days, or 31 days when both dates are counted inclusively.

Weeks, weekdays and weekend days

The day counter also walks through the span to count Monday–Friday weekdays and Saturday–Sunday weekend days. Date-only calculations use UTC internally so daylight-saving time does not accidentally add or remove a day.

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Common questions

Does the calculator include the start date?

Not by default. The standard result measures elapsed days. Enable inclusive counting if both the start and end dates should count.

Does it account for leap years?

Yes. The calculation uses actual calendar dates, so February 29 is naturally included when the selected range crosses a leap day.

Are weekdays the same as business days?

This page reports Monday–Friday weekdays without removing public holidays. Use the Business Days Calculator when you need selectable workweek rules.