Speed of Light to Miles per Hour Converter

How to Convert Speed of Light to Miles per Hour

To convert from the speed of light (c) to miles per hour (mph), you multiply the speed of light value by 670,616,629.384. This is because 1 speed of light is equal to 670,616,629.384 miles per hour.

Formula

Miles per Hour = Speed of Light × 670,616,629.384

or

mph = c × 670,616,629.384

Step-by-step process

1. Take the measurement in speed of light
2. Multiply that number by 670,616,629.384
3. The result is the equivalent speed in miles per hour

Examples

• 1 c = 1 × 670,616,629.384 = 670,616,629.384 mph
• 0.5 c = 0.5 × 670,616,629.384 = 335,308,314.692 mph