How fast is the speed of sound?
1,235 km/hAbout 767 mph · Jet
About 343 m a second in air at 20 °C.
That's about 22 times a red kangaroo's top speed (56 km/h).
🔊1,235 km/h
🥎a softball pitch
By speed: the speed of sound is about 10× faster than a softball pitch.
Things about as fast
- How fast was Bloodhound LSR?1,010 km/h
- How fast was Thrust2?1,019.47 km/h
- How fast does London move as Earth spins?1,042 km/h
- How fast is sound at airliner cruising height?1,062 km/h
- How fast did Chuck Yeager fly to break the sound barrier?1,127 km/h
- How fast was ThrustSSC?1,227.98 km/h
- How fast is the fastest subsonic airliner flight?1,327 km/h
- How fast did Felix Baumgartner fall?1,357.6 km/h
Many real things vary, so we use a typical or official figure. Spotted a mistake? Email [email protected].