How Many Seconds Are in a Year? (Easy Answer + 2025 Math) Updated 2025
Short answer: 31,536,000 seconds in a common year and 31,622,400 seconds in a leap year.
The Math
Seconds = days × 24 × 60 × 60.
- Common year: 365 × 24 × 60 × 60 = 31,536,000
- Leap year: 366 × 24 × 60 × 60 = 31,622,400
Quick Table
| Type | Days | Hours | Minutes | Seconds |
|---|---|---|---|---|
| Common year | 365 | 8,760 | 525,600 | 31,536,000 |
| Leap year | 366 | 8,784 | 527,040 | 31,622,400 |
See more conversions on this page.
Frequently Asked Questions
Why do leap years have more seconds?
Leap years add one calendar day (Feb 29), which adds 24 hours = 86,400 seconds.