How Many Seconds Are in a Year?
There are 31,536,000 seconds in a year. To convert years to seconds, multiply the number of years by 31,536,000.
These figures use a 365-day year. A leap year has 366 days, which adds one extra day (and its hours, minutes and seconds).
Common Year-to-Second Conversions
| Year | Second |
|---|---|
| 1 year | 31,536,000 seconds |
| 2 years | 63,072,000 seconds |
| 3 years | 94,608,000 seconds |
| 5 years | 157,680,000 seconds |
| 10 years | 315,360,000 seconds |
| 20 years | 630,720,000 seconds |
| 50 years | 1,576,800,000 seconds |
| 100 years | 3,153,600,000 seconds |
How to Convert Years to Seconds
Multiply the number of years by 31,536,000 to convert to seconds. To go the other way, divide the number of seconds by 31,536,000. The calculator above does both directions automatically — type in either box.
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