The **Hour** is a unit used to measure time intervals and corresponds to 60 minutes or 3600 seconds. In historical terms, this measure was calculated based on the rotation of the planet Earth. As of 1928, virtually every country in the world has adopted universal time. To determine the time in a given location, simply add or subtract an integer number of hours to universal time. This addition or subtraction will depend on whether we are located east or west of the Greenwich meridian. Between two consecutive time zones there is always a difference of one hour. As a curiosity, know that for every hour that passes are consumed more than 12 million cans of Coca-Cola and more than 1 million hamburgers.

The **Second** was historically calculated as a function of the Earth's rotation. However, it was understood that the earth's rotation was too imprecise and therefore it was decided to measure the second according to the Earth's revolution around the Sun. Over the last three hundred years, the pendulum was the most reliable time. For a pendulum clock to be able to accurately measure time, the range of motion must be kept constant. This is not easy, since frictional losses have an influence on the mechanical system of the watch. Small variations in the amplitude of the pendulum's movement, such as 4° or 5°, make the clock ahead about 15 seconds per day. To compensate for this variation, pendulum clocks use a weights system, which is intended to provide additional energy to the pendulum, and thus compensate for frictional losses. In the last decades, these clocks have almost disappeared, having been replaced by watches with atomic or electronic oscillations, which are much more accurate and reliable than the previous ones.

`s=hr xx 3600`

If you do not wish to use our converter, you can always choose to perform the mathematical conversion operations manually. To do this, simply follow the following steps:

- Replace the variable
**hr**with the value in hour that you want to convert. - Carry out mathematical operations, respecting priorities.
- Get the final value of second with the rounding you want.

hour to second | hour to second |
---|---|

0.05 hr = 180 s | 1 hr = 3600 s |

0.1 hr = 360 s | 1.2 hr = 4320 s |

0.2 hr = 720 s | 1.5 hr = 5400 s |

0.3 hr = 1080 s | 1.8 hr = 6480 s |

0.4 hr = 1440 s | 2 hr = 7200 s |

0.5 hr = 1800 s | 2.5 hr = 9000 s |

0.6 hr = 2160 s | 3 hr = 10800 s |

0.7 hr = 2520 s | 3.5 hr = 12600 s |

0.8 hr = 2880 s | 4 hr = 14400 s |

0.9 hr = 3240 s | 5 hr = 18000 s |

While great efforts have been made to ensure the accuracy of our conversion formulas, as well as all other information that is presented on our website, we can not give any guarantee or be held responsible for any errors that may have been made by our automatic calculators. As such, we urge our users to immediately contact with us if they find any error in the conversions made. Of course, we will try to correct any reported anomalies as quickly as possible! Thank you.