What is the speed of sound in miles per hour?

At 20 °C (68 °F), the speed of sound is 343 metres per second (1,125 ft/s; 1,235 km/h; 767 mph; 667 kn), or a kilometre in 2.91 s or a mile in 4.69 s. The speed of sound in an ideal gas depends only on its temperature and composition. read more

At sea level, the speed of sound is 1,088/sec. Multiply per/sec by 60 (seconds in a minute) for a sum of 65,280. Multiply that by 60 (minutes in 1 hour) for a sum of 3,916,800. This means that sound travels 3,916,800 feet per hour. read more

Convert speed units. Easily convert mach (speed of sound) to miles per hour, convert Ma to mph . Many other converters available for free. read more