Speed of Light Converter
Convert speed of light (c) to other units, with every conversion from 1 c listed.
Change the values and press Calculate to work out your own figures.
Enter a speed, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.
Show the working
- 1 c = 29979245800 cm/s
- 1 × 29979245800 = 29979245800 cm/s
1 c in other units
| Conversion | 1 c equals |
|---|---|
| Speed of Light to centimeters per second | 29,979,245,800 cm/s |
| Speed of Light to feet per second | 983,571,056.43 ft/s |
| Speed of Light to kilometers per hour | 1,079,252,848.8 km/h |
| Speed of Light to kilometers per second | 299,792.458 km/s |
| Speed of Light to knots | 582,749,918.359 kn |
| Speed of Light to mach | 874,030.489796 Mach |
| Speed of Light to meters per second | 299,792,458 m/s |
| Speed of Light to miles per hour | 670,616,629.384 mph |
About the units
- Speed of Light (c)
- Speed of light, a specialised unit. Definition: BIPM SI Brochure, 9th edition (SI units, prefixes and units accepted for use with the SI).