Speed of sound
Metric
- Kilometre per second0.34
- Metre per second343
- Kilometre per hour1,234.8
- Millimetre per second (mm/s)343,000
- Micrometre per second (µm/s)343,000,000
British/American
- Mile per second0.21
- Mile per hour (mph)767.27
- Foot per second1,125.33
Nautical
- Knot666.74
Other
- Speed of light1.14×10⁻⁶
- Speed of sound1
- A brisk walk201.76
- Speed of a common snail343,000