# Convert Year to Hour

Please provide values below to convert year [y] to hour [h], or *vice versa*.

### Year

**Definition:** A year (symbol: y, yr, or a) is a measurement of time based on Earth's orbital period around the sun. This is approximated as 365 or 366 days in the Gregorian calendar. Earth's orbit around the sun is seen as the passing of seasons in which weather, daylight hours, vegetation, and soil fertility, among other things, change.

**History/origin:** Various definitions of a year have been used by different calendars throughout history. The most commonly used calendar for civil affairs today is the Gregorian calendar, a solar calendar which consists of 365 or 366 days, depending on whether or not the year is a leap year. In astronomy, many other definitions of the year exist, such as the sidereal, draconic, lunar, and Gaussian year, among others.

The Gregorian calendar is a calendar that was reformed from the Julian calendar, which was a calendar that itself was reformed from the ancient Roman calendar.

**Current use:** The definition of a year based on the Gregorian calendar is used worldwide. In some cultures, lunisolar calendars are also used. In astronomy, many different definitions of the year are used, including the Julian year as a unit of time equal to 365.25 days based on the SI (International System of Units) base unit of seconds.

The term "year" is also used to describe periods that are loosely associated to the calendar year, such as the seasonal year, fiscal year, and academic year.

### Hour

**Definition:** An hour (symbol: h) is a unit of time conventionally defined as 1/24 of a day and 3,600 seconds. In Coordinated Universal Time, a negative or positive leap second may be incorporated to keep the hour within 0.9 seconds of universal time, making an hour either 3,599 or 3,601 seconds in some cases.

**History/origin:** The term "hour" is derived from the Anglo-Norman "houre," which was in use around the 13^{th} century.

There have been many definitions of the hour throughout history based on culture or region, such as the hour being divided into 1/12 of a period daylight or darkness. It is believed that the custom of dividing the cycle of day and night into 24 periods began with the ancient Egyptians.

**Current use:** The hour is used globally as a unit of time. Most forms of employment require a certain number of hours worked per day, with compensation being based on the measured or expected hours worked. Durations starting from 30 minutes (half an hour) are commonly used colloquially.

### Year to Hour Conversion Table

Year [y] | Hour [h] |
---|---|

0.01 y | 87.66 h |

0.1 y | 876.6 h |

1 y | 8766 h |

2 y | 17532 h |

3 y | 26298 h |

5 y | 43830 h |

10 y | 87660 h |

20 y | 175320 h |

50 y | 438300 h |

100 y | 876600 h |

1000 y | 8766000 h |

### How to Convert Year to Hour

1 y = 8766 h

1 h = 0.0001140771 y

**Example:** convert 15 y to h:

15 y = 15 × 8766 h = 131490 h