# Convert Mach to Knots

How many knots are in a Mach? Easy mach to knots conversion.From

To

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Mach 1 ≈

643.99568 Knots

result rounded

Decimal places

Mach

Mach is the ratio of an object's speed to the speed of sound. For example, something traveling at Mach 5 is traveling at 5 times the speed of sound. The speed of sound varies depending on many factors. In dry air, at 0 degrees Celsius, the speed of sound is about 331.3 meters per second.
Knots

A knot is a unit of speed, equal to one nautical mile per hour. Something traveling at one knot is going about 1.151 land miles per hour.Common abbreviations: kn, kt