Year to Second Converter
Type a value — the answer appears instantly. 1 yr = 31,557,600 s.
Reviewed by the OmniCalc teamMethod verified 2026-07-01
31,557,600 seconds
= 8,766 h= 525,960 min
equals 31,557,600 secondsFormula: s = yr × 31557600
Year to Second formula
s = yr × 31557600
Convert 5 years to seconds
- Start with 5 years.
- Multiply by the conversion factor: 5 × 31,557,600 = 157,788,000.
- So 5 yr = 157,788,000 s.
Year to Second conversion table
| Years (yr) | Seconds (s) |
|---|---|
| 0.01 yr | 315,576 s |
| 0.1 yr | 3,155,760 s |
| 0.25 yr | 7,889,400 s |
| 0.5 yr | 15,778,800 s |
| 1 yr | 31,557,600 s |
| 2 yr | 63,115,200 s |
| 3 yr | 94,672,800 s |
| 4 yr | 126,230,000 s |
| 5 yr | 157,788,000 s |
| 6 yr | 189,346,000 s |
| 7 yr | 220,903,000 s |
| 8 yr | 252,461,000 s |
| 9 yr | 284,018,000 s |
| 10 yr | 315,576,000 s |
| 15 yr | 473,364,000 s |
| 20 yr | 631,152,000 s |
| 25 yr | 788,940,000 s |
| 30 yr | 946,728,000 s |
| 40 yr | 1,262,300,000 s |
| 50 yr | 1,577,880,000 s |
| 75 yr | 2,366,820,000 s |
| 100 yr | 3,155,760,000 s |
| 250 yr | 7,889,400,000 s |
| 500 yr | 15,778,800,000 s |
| 1,000 yr | 31,557,600,000 s |
| 5,000 yr | 157,788,000,000 s |
| 10,000 yr | 315,576,000,000 s |
Unit definitions
What is a year?
For duration conversion the year is treated as the Julian year of 365.25 days, which averages in the leap day. It is close to the actual mean calendar year and suitable for interest, age, and long-span estimates. For exact dates, use a calendar-aware date calculator.
What is a second?
The second is the SI base unit of time, defined by the hyperfine transition frequency of caesium-133. It is the foundation of all timekeeping and the basis for every other time unit. Sixty seconds make a minute.
Frequently asked questions
How many seconds are in one year?
One year equals 31,557,600 seconds (1 yr = 31,557,600 s).
How do I convert years to seconds?
Multiply the value in years by 31,557,600. For example, 10 yr × 31,557,600 = 315,576,000 s.
Which is bigger — a year or a second?
A year is bigger: one year contains 31,557,600 seconds.
Is this year to second converter free?
Yes — the converter is free, works offline once loaded, and computes instantly in your browser without sending your numbers to a server.
Conversion factors follow international definitions (SI / NIST). Last verified 2026-07-01.