Feet per second (ft/s) to Speed of light (c) Conversion
Feet per second
Feet per second (ft/s) is a unit of speed in the US customary and imperial systems equal to approximately 0.3048 m/s or 1.09728 km/h. It is commonly used in ballistics to express projectile velocities, in structural engineering for wind speed calculations, and in sports science. The speed of sound at sea level is approximately 1,125 ft/s (343 m/s), a reference used in firearms and aeronautics.
Speed of light
The speed of light in a vacuum (c) is exactly 299,792,458 metres per second — a fundamental constant of nature and the ultimate speed limit of the universe. It is the basis of Einstein's Special Theory of Relativity, which establishes that no object with mass can reach or exceed this speed. The definition of the metre itself is anchored to c: one metre is the distance light travels in 1/299,792,458 of a second.
| Feet per second (ft/s) | Speed of light (c) |
|---|---|
| 0.1 ft/s | 0.000000000102 c |
| 1 ft/s | 0.00000000102 c |
| 2 ft/s | 0.00000000203 c |
| 3 ft/s | 0.00000000305 c |
| 5 ft/s | 0.00000000508 c |
| 10 ft/s | 0.0000000102 c |
| 20 ft/s | 0.0000000203 c |
| 30 ft/s | 0.0000000305 c |
| 50 ft/s | 0.0000000508 c |
| 100 ft/s | 0.000000102 c |
| 1000 ft/s | 0.00000102 c |
Frequently Asked Questions (FAQ)
How many speed of light are in 1 feet per second?
1 feet per second (ft/s) is exactly 0.000000001 speed of light (c).
How do I convert feet per second to speed of light?
Multiply the value in feet per second by 0.000000001 to get the result in speed of light. Or use the converter above — type any number and see the result instantly.