Calculator Soup^{®}

Choose the input unit you have and the output unit you want to convert to. Enter the value you want to convert then click on the "Calculate" button. All results are rounded to 3 decimal places.

*** Months** in this Conversion Calculator are calculated at 30.41666 days/ month since this is the value of 365 days/ year divided by 12 months/ year.

**** Years** in this Conversion Calculator are calculated at 365 days/ year. This calculator does not factor in leap-years which are 366 days/ year.

**" sidereal day:**

From -- *How Many? A dictionary of units of measurement* under **S** at http://www.unc.edu/~rowlett/units/dictS.html

Conversions are performed by using a conversion factor. By knowing the conversion factor, converting between units can become a simple multiplication problem:

**S * C = E**

Where **S** is our starting value, **C** is our conversion factor, and **E** is our end converted result.

To simply convert from any unit into seconds^{}, for example, from 120 minutes, just * multiply by* the conversion value in the right column in the table below.

120 min * 60 [ (s

^{}) / (min) ] = 7200 s^{}

To convert from seconds ^{} into units in the left column * divide by* the value in the right column or, multiply by the reciprocal, 1/x.

7200 s

^{}/ 60 [ (s^{}) / (min) ] = 120

To convert among any units in the left column, say from A to B, you can multiply by the factor for A to convert A into s^{} then divide by the factor for B to convert out of s^{}. Or, you can find the single factor you need by dividing the A factor by the B factor.

For example, to convert from minutes to hours you would multiply by 60 then divide by 3600. Or, multiply by 60/3600 = 0.0166666666666667. So, to convert directly from min to hr you multiply by 0.0166666666666667.

To Convert from Unit |
Unit Symbol |
and Convert to ( s ) |
Multiply by ( s / Unit ) |
---|---|---|---|

nanosecond | ns | second | 0.000000001 |

millisecond | ms | second | 0.001 |

second |
s |
second |
1 |

second (sidereal) | s | second | 0.99726956 |

minute | min | second | 60 |

minute (sidereal) | min | second | 59.83617361 |

hour | h | second | 3600 |

hour (sidereal) | h | second | 3590.170417 |

day | d | second | 86400 |

day (sidereal) | d | second | 86164.09 |

week | wk | second | 604800 |

month | mo | second | 2628000 |

shake | shake | second | 0.00000001 |

year | yr | second | 31536000 |

year (sidereal) | yr | second | 31449892.85 |

decade | dec | second | 315360000 |

century | c | second | 3153600000 |

millennium | millennium | second | 31536000000 |

The National Institute of Standards and Technology (NIST) - *The NIST Guide for the use of the International System of Units* - Appendix B, subsections B.8 Factors for Units Listed Alphabetically and B.9 Factors for units listed by kind of quantity or field of science.

Lide, David R., Daniel (Editor-in-Chief). *CRC Handbook of Chemistry and Physics, 89th Edition* New York, NY: CRC Press, p. 1-28, 2008.

Wikipedia contributors. "Conversion of units" Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, last visited 26 Jun. 2011.

*How Many? A dictionary of units of measurement* at http://www.unc.edu/~rowlett/units/

**Cite this content, page or calculator as:**

Furey, Edward "Time Conversion Calculator" From *http://www.CalculatorSoup.com* - Online Calculator Resource.