Convert fathom (US survey) to light year Online | Free Length Converter

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Fathom (US Survey)


The fathom (US survey) is a unit of length used in U.S. surveying and nautical contexts, defined as exactly 6 US survey feet. Since one US survey foot is approximately 0.3048006096 meters, the US survey fathom measures about 1.828804 meters.


Like the international fathom, it is primarily used to measure water depths and underwater distances in marine navigation and surveying.


Key details:



  • 1 US survey fathom = 6 US survey feet



  • 1 US survey fathom ≈ 1.828804 meters



  • 1 fathom = 2 yards



Though the difference between the US survey fathom and the international fathom is very small, the US survey units are being phased out in favor of international standards, but they still appear in some legal and historical surveying documents.



Light Year


A light year is a unit of distance used in astronomy to measure how far light travels in one year. Light moves extremely fast—about 299,792 kilometers per second—so in one year, it travels roughly 9.46 trillion kilometers (or about 5.88 trillion miles). Light years help scientists express the huge distances between stars and galaxies. For example, the nearest star to Earth, Proxima Centauri, is about 4.24 light years away. The term “light year” can be confusing because it sounds like a measure of time, but it actually measures distance.



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