---
title: "Years to Seconds — yr to s converter"
description: "1 year = 31,556,952 seconds. Convert years to seconds with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/years-to-seconds/
site: "At One Place"
---

# Years to seconds

**1 year in seconds: 1 yr = 31,556,952 s**

s = yr × 31,556,952

To convert years to seconds, multiply by 31,556,952. The table below gives the values people look up most often, and the converter works for any number.

## Years to seconds table

*Common year values converted to seconds.*

| Years | Seconds |
| --- | --- |
| 1 yr | 31,556,952 |
| 2 yr | 63,113,904 |
| 3 yr | 94,670,856 |
| 4 yr | 126,227,810 |
| 5 yr | 157,784,760 |
| 10 yr | 315,569,520 |
| 15 yr | 473,354,280 |
| 20 yr | 631,139,040 |
| 25 yr | 788,923,800 |
| 30 yr | 946,708,560 |
| 40 yr | 1,262,278,100 |
| 50 yr | 1,577,847,600 |
| 75 yr | 2,366,771,400 |
| 100 yr | 3,155,695,200 |
| 250 yr | 7,889,238,000 |
| 500 yr | 15,778,476,000 |
| 1,000 yr | 31,556,952,000 |

## How the conversion works

The relationship is s = yr × 31,556,952. Both units measure time, so the conversion is a fixed factor that never changes.

> Year: Mean Gregorian year, 365.2425 days.

## Common questions

### How many seconds are in one year?

One year equals 31,556,952 seconds. s = yr × 31,556,952.

### How do you convert years to seconds?

Use s = yr × 31,556,952. So 10 yr is 315,569,520 s.

### How many years are in one second?

One second equals 3.169 × 10^-8 years, which is the reverse of the conversion above.

### Is there more than one kind of year?

Mean Gregorian year, 365.2425 days.

## Related pages

- [Seconds to Years](https://atoneplace.net/convert/seconds-to-years/)
- [Years to Milliseconds](https://atoneplace.net/convert/years-to-milliseconds/)
- [Years to Minutes](https://atoneplace.net/convert/years-to-minutes/)
- [Years to Hours](https://atoneplace.net/convert/years-to-hours/)
- [Years to Days](https://atoneplace.net/convert/years-to-days/)
- [Years to Weeks](https://atoneplace.net/convert/years-to-weeks/)
- [Years to Months](https://atoneplace.net/convert/years-to-months/)

## Sources

- Guide for the Use of the International System of Units (SP 811) — NIST (https://www.nist.gov/pml/special-publication-811) [Public domain (US Government)]
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures (https://www.bipm.org/en/publications/si-brochure)
- Calculated on this page — At One Place (/about/)