Convert Year to Second
Convert years to seconds by entering a value below.
How to Convert Years to Seconds
The year and second are both units of time. By definition, 1 year equals exactly 31556952 seconds. This means to convert years to seconds, you multiply by 31556952.
Formula
Step-by-Step Example
Convert 5 yr to seconds:
We need to convert years to seconds
Since 1 yr = 31556952 s, multiply by 31556952
5 × 31556952 = 157784760
5 yr = 157784760 s
Year to Second Conversion Table
Quick reference table for common year to second conversions. Click any value for detailed calculation.
| Years (yr) | Seconds (s) |
|---|---|
| 0.1 yr | 3155695.2 s |
| 0.5 yr | 15778476 s |
| 1 yr | 31556952 s |
| 2 yr | 63113904 s |
| 5 yr | 157784760 s |
| 10 yr | 315569520 s |
| 25 yr | 788923800 s |
| 50 yr | 1577847600 s |
| 100 yr | 3155695200 s |
About These Units
Year (yr)
A year (yr) equals approximately 365.25 days (accounting for leap years) or 8,760 hours. Years measure age, anniversaries, academic periods, and historical timelines. Earth completes one orbit around the Sun in one year. A fiscal year may differ from a calendar year.
Second (s)
The second (s or sec) is the SI base unit of time, defined by cesium-133 atomic transitions. Seconds measure pulse rate (60-100 per minute), athletic performance, cooking times, and countless daily activities. There are 60 seconds in a minute, 3,600 in an hour, 86,400 in a day.
Frequently Asked Questions
How do I convert years to seconds?
To convert years to seconds, multiply the value by 31556952. For example, 10 yr = 315569520 s.
How many seconds are in 1 year?
1 year equals 31556952 seconds.
What is the formula for years to seconds?
The formula is: s = yr × 31556952.