The speed of light, denoted as cc, is a fundamental physical constant representing the speed at which light propagates through a vacuum. In the International System of Units (SI), its exact value is defined as approximately 299,792,458 meters per second (m/s). The speed of light is a universal constant and plays a crucial role in various branches of physics, including optics, relativity, and quantum mechanics. It serves as the ultimate speed limit in the universe, with nothing able to travel faster than it in a vacuum.
Symbol/abbreviation: c
Unit of: SPEED
SPEED's base unit: meters per second (Non-SI Unit)
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In relation to the base unit (meters per second), 1 Speed Of Light = 299792458 meters per second.
Conversion table 1 Speed Of Light (c) to all speed units | ||
|---|---|---|
| 1 c | = 1.0792519853984E+14 centimeters per hour (cm/h) | ⇛ |
| 1 c | = 1798751150497.7 centimeters per minute (cm/min) | ⇛ |
| 1 c | = 29979245800 centimeters per second (cm/s) | ⇛ |
| 1 c | = 37948.412405063 cosmic velocity first (v1) | ⇛ |
| 1 c | = 26767.18375 cosmic velocity second (v2) | ⇛ |
| 1 c | = 17983.950689862 cosmic velocity third (v3) | ⇛ |
| 1 c | = 10071.979102973 earth velocity (v) | ⇛ |
| 1 c | = 3543646075650.1 feet per hour (ft/h) | ⇛ |
| 1 c | = 59014263385.827 feet per minute (ft/m) | ⇛ |
| 1 c | = 983571056.43045 feet per second (ft/s) | ⇛ |
| 1 c | = 1802617757855.1 furlongs per fortnight (f/fn) | ⇛ |
| 1 c | = 42523752907801 inches per hour (in/h) | ⇛ |
| 1 c | = 708729215130.02 inches per minute (in/min) | ⇛ |
| 1 c | = 11802852677.165 inches per second (in/s) | ⇛ |
| 1 c | = 1079251985.3984 kilometers per hour (km/h) | ⇛ |
| 1 c | = 17987511.504977 kilometers per minute (km/m) | ⇛ |
| 1 c | = 299792.458 kilometers per second (km/s) | ⇛ |
| 1 c | = 582750421.81462 knots (kn) | ⇛ |
| 1 c | = 582377976.31189 knots admiralty (kn[admiralty]) | ⇛ |
| 1 c | = 1016245.620339 mach number (M) | ⇛ |
| 1 c | = 1079251985398.4 meters per hour (m/h) | ⇛ |
| 1 c | = 17987511504.977 meters per minute (m/min) | ⇛ |
| 1 c | = 299792458 meters per second (m/s) | ⇛ |
| 1 c | = 670616629.3844 miles per hour (mi/h) | ⇛ |
| 1 c | = 11176943.823073 miles per minute (mi/m) | ⇛ |
| 1 c | = 186282.39705122 miles per second (mi/s) | ⇛ |
| 1 c | = 1.0792519853984E+15 millimeters per hour (mm/h) | ⇛ |
| 1 c | = 17987511504977 millimeters per minute (mm/min) | ⇛ |
| 1 c | = 299792458000 millimeters per second (mm/s) | ⇛ |
| 1 c | = 1 speed of light (c) | ⇛ |
| 1 c | = 1016245.620339 speed of light in air (s[air]) | ⇛ |
| 1 c | = 1 speed of light in vacuum (c[vacuum]) | ⇛ |
| 1 c | = 202193.60490996 velocity of sound in pure water (v/soundwater) | ⇛ |
| 1 c | = 197024.4860673 velocity of sound in sea water 20c 10 meter deep (v/soundsea) | ⇛ |
| 1 c | = 1180285267716.5 yards per hour (yd/h) | ⇛ |
| 1 c | = 19671421128.609 yards per minute (yd/min) | ⇛ |
| 1 c | = 327857018.81015 yards per second (yd/s) | ⇛ |