Days to Years Converter

Enter the time in days below to get the value converted to years.


Result in Years:

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1 d = 0.002738 yr

Do you want to convert years to days?

How to Convert Days to Years

To convert a measurement in days to a measurement in years, divide the time by the following conversion ratio: 365 days/year.

Since one normal calendar year has 365 days, you can use this simple formula to convert:

years = days รท 365

The time in years is equal to the time in days divided by 365.

For example, here's how to convert 500 days to years using the formula above.
years = (500 d ÷ 365) = 1.37 yr
conversion scale showing days and equivalent years time values

Days and years are both units used to measure time. Keep reading to learn more about each unit of measure.

What Is a Day?

One day is the time it takes for the Earth to complete a single 360-degree rotation about its axis. There are 24 hours in a day.

The day is an SI accepted unit for time for use with the metric system. Days can be abbreviated as d; for example, 1 day can be written as 1 d.

Learn more about days.

What Is a Year?

One year is the time it takes for the Earth to complete its orbit around the Sun. There are 365 days in a year, with the exception of the leap year when there are 366.

We have leap years because the Earth actually takes 365.2425 days to revolve around the sun, but we round to 365 for convenience. However, since we miss a quarter of a day per revolution around the sun, this means that we add an extra day to the year once every 4 years, hence the leap year.

Years can be abbreviated as yr (plural yrs), and are also sometimes abbreviated as y. For example, 1 year can be written as 1 yr or 1 y, and 2 years can be written as 2 yrs.

Learn more about years.

Day to Year Conversion Table

Table showing various day measurements converted to years.
Days Years
1 d 0.002738 yr
2 d 0.005476 yr
3 d 0.008214 yr
4 d 0.010952 yr
5 d 0.01369 yr
6 d 0.016427 yr
7 d 0.019165 yr
8 d 0.021903 yr
9 d 0.024641 yr
10 d 0.027379 yr
20 d 0.054758 yr
30 d 0.082137 yr
40 d 0.109516 yr
50 d 0.136895 yr
60 d 0.164274 yr
70 d 0.191653 yr
80 d 0.219033 yr
90 d 0.246412 yr
100 d 0.273791 yr
200 d 0.547581 yr
300 d 0.821372 yr
400 d 1.0952 yr
500 d 1.369 yr
600 d 1.6427 yr
700 d 1.9165 yr
800 d 2.1903 yr
900 d 2.4641 yr
1,000 d 2.7379 yr

More Day & Year Conversions