Duration

Date Duration Calculator

Calculate the duration between two dates in years, months, weeks, and days.

Select dates and settings to calculate instantly.

Start Date

End Date

Date calculations account for actual calendar length, including leap years and varying month lengths where applicable.

Select your dates and inputs to calculate durations, weekdays, future dates, countdowns, and more.

What is a Date Duration Calculator?

A date duration calculator measures the time between two dates and expresses it in one or more units such as years, months, weeks, and days.

Duration = End Date − Start Date

Weeks = Total Days ÷ 7

Date duration is the total amount of time between two selected dates.

Yes. Many date duration calculators break the result into years, months, weeks, and days.

They are related, but duration is broader and can include multiple time units rather than only total days.

Browse related calculator variations and find the version that matches your preferred units or use case.

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