Convert Years to Seconds
One year equals 31,556,952 seconds. Type any value to convert years to seconds instantly — with a full reference table below.
Convert Years to Seconds
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How to convert Years to Seconds
To convert years to seconds, multiply by 31,556,952. One year equals 31,556,952 s, and one second equals 3.16887 × 10⁻⁸ yr.
- Take the value in years — for example 7.5 yr.
- Multiply by 31,556,952 (the number of seconds in one year).
- 7.5 × 31,556,952 = 236,677,140 s.
Years to Seconds conversion table
| Years | Seconds |
|---|---|
| 1 yr | 31,556,952 s |
| 2 yr | 63,113,904 s |
| 3 yr | 94,670,856 s |
| 5 yr | 157,784,760 s |
| 10 yr | 315,569,520 s |
| 15 yr | 473,354,280 s |
| 20 yr | 631,139,040 s |
| 30 yr | 946,708,560 s |
| 45 yr | 1,420,062,840 s |
| 60 yr | 1,893,417,120 s |
| 90 yr | 2,840,125,680 s |
| 120 yr | 3,786,834,240 s |
| 365 yr | 11,518,287,480 s |
| Seconds | Years |
|---|---|
| 1 s | 3.16887 × 10⁻⁸ yr |
| 2 s | 6.33775 × 10⁻⁸ yr |
| 3 s | 9.50662 × 10⁻⁸ yr |
| 5 s | 1.58444 × 10⁻⁷ yr |
| 10 s | 3.16887 × 10⁻⁷ yr |
| 15 s | 4.75331 × 10⁻⁷ yr |
| 20 s | 6.33775 × 10⁻⁷ yr |
| 30 s | 9.50662 × 10⁻⁷ yr |
| 45 s | 0.000001426 yr |
| 60 s | 0.0000019013 yr |
| 90 s | 0.000002852 yr |
| 120 s | 0.0000038026 yr |
| 365 s | 0.0000115664 yr |
About converting Years to Seconds
Years (yr) and Seconds (s) are both units of time. The exact factor is 1 yr = 31,556,952 s, so multiply by 31,556,952 to go from years to seconds (or divide to go back).
The conversion runs entirely in your browser. Need the reverse? Use the Seconds to Years converter, or the full unit converter for every unit at once.
Real-world time in years and seconds
| Example | Years | Seconds |
|---|---|---|
| A typical work day (8 h) | 0.000912636 yr | 28,800 s |
| A full-time work year (2,080 h) | 0.237285 yr | 7,488,000 s |
| A common year (365 days) | 0.999336 yr | 31,536,000 s |
| A leap year (366 days) | 1.002074 yr | 31,622,400 s |
“≈” marks typical values; the rest are defined or measured figures.
The units
Here, an average Gregorian year: 365.2425 days (a common year has 365, a leap year 366).
Used for: Age, interest and long durations.
The SI base unit of time, defined by 9,192,631,770 oscillations of a caesium-133 atom.
Used for: Timing everything.
Seconds, minutes, hours, days and weeks are exact. Months and years are averages of the Gregorian calendar (a year of 365.2425 days, a month of 30.436875 days), because real months and years vary in length.