Speed Unit Conversion
Speed is a measure of how fast an object moves relative to a reference point. Different fields use different units: kilometers per hour (km/h) for road travel, knots for maritime and aviation, Mach numbers for supersonic speeds, and meters per second (m/s) in scientific contexts.
Common Speed References
Average walking speed is about 5 km/h (3.1 mph). Highway speed limits typically range from 100-130 km/h (62-81 mph). The speed of sound at sea level is approximately 1,235 km/h (767 mph) or Mach 1. The speed of light in vacuum is exactly 299,792,458 m/s, the fastest speed possible in the universe.