Convert years to seconds
Year (yr) to second (s). One year equals 31557600 seconds.
Formula
Year to second conversion table
| Years | Seconds | Seconds | Years |
|---|---|---|---|
| 1 yr | 31557600 s | 1 s | 3.168809e-8 yr |
| 2 yr | 63115200 s | 2 s | 6.337618e-8 yr |
| 3 yr | 94672800 s | 3 s | 9.506426e-8 yr |
| 5 yr | 157788000 s | 5 s | 1.584404e-7 yr |
| 10 yr | 315576000 s | 10 s | 3.168809e-7 yr |
| 20 yr | 631152000 s | 20 s | 6.337618e-7 yr |
| 50 yr | 1577880000 s | 50 s | 0.000002 yr |
| 100 yr | 3155760000 s | 100 s | 0.000003 yr |
| 500 yr | 15778800000 s | 500 s | 0.000016 yr |
| 1000 yr | 31557600000 s | 1000 s | 0.000032 yr |
To convert years to seconds, multiply the number of years by 31557600. One year equals 31557600 seconds, and one second equals 3.168809e-8 years, so the relationship is fixed and exact. As a worked example, 10 yr comes to 315576000 s. Enter your own figure in the converter above to get an instant answer, or use the swap button to flip the direction. This is a time conversion, and like every tool on UnitGlide it runs locally in your browser with no account or upload required. The table further down shows a range of common year values already worked out in seconds, plus the reverse second to year direction, which is handy for quick reference or double-checking a result by hand.
Frequently asked questions
How many seconds are in a year?
One year equals 31557600 seconds. The ratio is constant, so you can multiply any number of years by 31557600 to get seconds.
What is the formula to convert years to seconds?
Use seconds = years × 31557600. UnitGlide applies this exact formula for every value, so results stay accurate across the whole range.
How do I convert seconds back to years?
Go the other way by using one second equals 3.168809e-8 years. You can also press the swap button in the converter above to flip the direction in one click.
Is this year to second converter accurate?
Yes. It uses internationally defined SI conversion factors, as maintained by the BIPM, and all math runs in your browser so nothing is rounded away on a server. For everyday use the displayed precision is more than enough.