Convert Seconds to Years

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

Results in Years:

1 sec = 3.1689E-8 yr

Do you want to convert years to seconds?

How to Convert Seconds to Years

conversion scale showing seconds and equivalent years time values

To convert a second measurement to a year measurement, multiply the time by the conversion ratio. One second is equal to 3.1689E-8 years, so use this simple formula to convert:

years = seconds × 3.1689E-8

The time in years is equal to the seconds multiplied by 3.1689E-8.

For example, here's how to convert 5 seconds to years using the formula above.

5 sec = (5 × 3.1689E-8) = 1.5844E-7 yr

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

Seconds

The second has historically been defined as 1/60 of a minute or 1/86,400 of a day. The SI defines the second as the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium 133 atom.

The second is the SI base unit for time in the metric system. Seconds can be abbreviated as sec, for example 1 second can be written as 1 sec.

Years

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.

Years can be abbreviated as yr, and are also sometimes abbreviated as y. For example, 1 year can be written as 1 yr or 1 y.

Second Measurements and Equivalent Year Conversions

Common second values converted to the equivalent year value
Seconds	Years
1 sec	0.000000031689 yr
2 sec	0.000000063377 yr
3 sec	0.000000095066 yr
4 sec	0.00000012675 yr
5 sec	0.00000015844 yr
6 sec	0.00000019013 yr
7 sec	0.00000022182 yr
8 sec	0.00000025351 yr
9 sec	0.0000002852 yr
10 sec	0.00000031689 yr
11 sec	0.00000034858 yr
12 sec	0.00000038026 yr
13 sec	0.00000041195 yr
14 sec	0.00000044364 yr
15 sec	0.00000047533 yr
16 sec	0.00000050702 yr
17 sec	0.00000053871 yr
18 sec	0.0000005704 yr
19 sec	0.00000060209 yr
20 sec	0.00000063377 yr
21 sec	0.00000066546 yr
22 sec	0.00000069715 yr
23 sec	0.00000072884 yr
24 sec	0.00000076053 yr
25 sec	0.00000079222 yr
26 sec	0.00000082391 yr
27 sec	0.0000008556 yr
28 sec	0.00000088728 yr
29 sec	0.00000091897 yr
30 sec	0.00000095066 yr
31 sec	0.00000098235 yr
32 sec	0.000001014 yr
33 sec	0.0000010457 yr
34 sec	0.0000010774 yr
35 sec	0.0000011091 yr
36 sec	0.0000011408 yr
37 sec	0.0000011725 yr
38 sec	0.0000012042 yr
39 sec	0.0000012359 yr
40 sec	0.0000012675 yr