en.wikipedia.org/wiki/Speed_of_light

The **speed of light** in vacuum, commonly denoted c, is a universal physical
constant important in many areas of physics. Its exact value is
7008299792458000000♤299,792,458 metres per second It is exact because the
unit of length, the metre, is defined from this constant and the international
standard for time. According to ...

www.grc.nasa.gov/www/k-12/Numbers/Math/Mathematical_Thinking/how_fast_is_the_speed.htm

How "Fast" is the **Speed of Light**? Light travels at a constant, finite speed of
186,000 mi/sec. A traveler, moving at the **speed of light**, would circum-navigate
the equator approximately 7.5 times in one second. By comparison, a traveler in
a jet aircraft, moving at a ground speed of 500 **mph**, would cross the continental
U.S. ...

www.universetoday.com/38040/speed-of-light-2

Sep 1, 2016 **...** **Speed of Light** (c):. Light travels at a constant speed of 1,079,252,848.8 (1.07
billion) km per hour. That works out to 299,792,458 m/s, or about 670,616,629
**mph** (**miles per hour**). To put that in perspective, if you could travel at the **speed of**
**light**, you would be able to circumnavigate the globe approximately ...

www.unitjuggler.com/convert-speed-from-c-to-mph.html

Convert speed units. Easily convert **speed of light** to **miles per hour**, convert c to
**mph** . Many other converters available for free.

www.space.com/15830-light-speed.html

Mar 6, 2018 **...** The **speed of light** in a vacuum is 186,282 miles per second (299,792 kilometers
per second), and in theory nothing can travel faster than light. In **miles per hour**,
light speed is, well, a lot: about 670,616,629 **mph**. If you could travel at the **speed**
**of light**, you could go around the Earth 7.5 times in one second.

www.thoughtco.com/speed-of-light-in-miles-per-hour-609319

Mar 16, 2017 **...** This unit conversion example problem demonstrates how to convert the **speed of**
**light** in meters per second to **miles per hour**.

www.kylesconverter.com/speed-or-velocity/light-speed-to-miles-per-hour

Instantly Convert **Light Speed** (c) to **Miles Per Hour** (**mph**) and Many More **Speed**
Or Velocity Conversions Online. **Light Speed** Conversion Charts. Many Other
Conversions.

www.learnastronomyhq.com/articles/how-fast-is-the-speed-of.html

Light speed is how fast light travels. Just like a plane's speed is measured in
miles or kilometres per hour, light has a top speed too. The **speed of light** is
186,282 miles per second. If you want to compare it to the speed of a plane then
the **speed of light** is 671 million **miles per hour** or 1,080 million kilometres per
hour. That is ...

www.kylesconverter.com/speed-or-velocity/miles-per-hour-to-light-speed

Instantly Convert **Miles Per Hour** (**mph**) to **Light Speed** (c) and Many More **Speed**
Or Velocity Conversions Online. **Miles Per Hour** Conversion Charts. Many Other
Conversions.