How do I convert Mach (sea-level approx.) to Knot (kn)?

1 mach equals 661.471414 knot using SI-based conversion and precise factors.

What is the formula to convert Mach (sea-level approx.) to Knot (kn)?

This is a linear unit conversion using a constant factor between units.

Yes, it uses exact definitions or standardized constants (e.g., 1 in = 25.4 mm).

Use the shareable URL pattern: /convert/mach-to-knot/1

Category: Speed

Value From To Precision

661.471414 knot

1 mach = 661.471414 knot

High-precision rounding: 6 decimals

We convert by pivoting through the SI base unit for Speed and applying exact factors where applicable.

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Speed is distance over time; knots and mph coexist with SI.

Mach

Ratio to local speed of sound.

History: Named after physicist Ernst Mach.

Knot (kn)

1 nmi per hour.

History: From measuring speed with knotted rope at sea.