Number of Years, Months and Days Between Two Dates

With this calculator, you can find the number of days between two dates. This tool converts the difference into years, months and days. You can also get just the total number of days without conversion.

Features of the duration-between-two-dates calculator

This calculator is very simple to use. Just enter the start date and the end date. The calculator takes care of the rest. You can also choose to display the result in days, months or years.

You can also choose to display the result in total days. This lets you know how many days there are between two dates, without doing any extra math.

To run the calculation, just click the Difference button.

Example: calculating the interval between two dates

Let's use two different dates, 07/12/2015 and 06/15/2019, to find the interval.

The interval is therefore 3 years, 11 months and 3 days, or 1434 total days.

Order of the dates

Note that the order of the dates does not matter. If you swap the dates, the result stays the same. For example, if you enter 06/15/2019 and 07/12/2015, the result is still 3 years, 11 months and 3 days, or 1434 total days. The calculator automatically swaps the dates to give you the right result.

Save the data and export it

The calculator automatically records the data you enter. You can also export the data in CSV or PDF format. This lets you keep a record of your calculations and easily share them with other people.

Why calculate the interval between two dates?

This calculator is useful for anyone who wants to calculate their exact age including months and days.

It also lets you find out how long an event lasted. For example, according to Wikipedia, Louis XIV was born on September 5, 1638 and died on September 1, 1715. Thanks to this tool that calculates the duration between two dates, we can find out at what age Louis XIV died: 76 years, 11 months and 27 days.

In addition, this tool can be used in a professional context, for example to calculate the duration of a contract, the time elapsed between two projects, or an employee's seniority in a company.

It can also be very handy for administrative purposes, in particular to check eligibility for certain benefits or pensions that depend on duration criteria.