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Speed Converter

Name: Speed Converter - MPH, KPH, Knots & Mach
Author: Calculator.CL

High-precision conversion tool for velocity units.

Miles per Hour (mph)

Kilometers per Hour (km/h)

Meters / Second (m/s)

Knots (kn)

Mach

📌 Table of Contents

Miles per Hour (mph): Standard unit in the US and UK. Used for road speed limits.
Kilometers per Hour (km/h): Standard unit worldwide for road speeds.
Meters per Second (m/s): The SI unit for speed. Preferred in physics and engineering.
Knots (kn): Generally used in aviation and maritime contexts. 1 Knot is 1 nautical mile per hour.

Mach number is the ratio of an object's speed to the speed of sound in the surrounding medium.

Mach 1 equals the speed of sound (approx 767 mph or 1235 km/h at sea level).

1 Knot is slightly faster than 1 mph (1 Knot ≈ 1.15 mph).

The Apollo 10 crew reached 24,791 mph relative to Earth.