What is knot?

A knot is a unit of speed equal to one nautical mile per hour, approximately 1.852 km/h. It is the international standard for maritime navigation, aviation, and meteorological wind speed reporting.

Real-world uses

Knots are the universal speed unit in maritime navigation and aviation worldwide, regardless of whether a country uses metric or imperial. Ship speeds, ocean currents, wind speed in aviation weather (METAR) reports, and jet stream velocities are all given in knots.

History

The knot originates from the 17th-century practice of measuring ship speed by throwing a log overboard attached to a rope with knots tied at regular intervals. Sailors counted how many knots paid out in a fixed time (measured by a sandglass).

Common mistakes

Saying "knots per hour"—a knot already means nautical miles per hour, so adding "per hour" is redundant and incorrect. Also, confusing knots with km/h: 1 knot ≈ 1.852 km/h.

What is metre per minute?

Metre per minute is a unit of speed expressing the distance in metres covered in one minute. It is used in industrial machinery, conveyor belt speeds, and slow-motion technical processes.

Real-world uses

Metres per minute is used in manufacturing for conveyor belt speeds, CNC machine feed rates, and surface cutting speeds. Treadmill speeds at low settings may be displayed in m/min. It is also used for walking speed in pedestrian traffic studies.

History

Metres per minute became a practical unit in industrial settings where processes operate too slowly for m/s to give convenient numbers but too fast for m/h. It is particularly entrenched in machining and metalworking standards.

Common mistakes

Confusing metres per minute with metres per second—they differ by a factor of 60. An average walking speed of about 80 m/min equates to roughly 1.33 m/s or 4.8 km/h.

When is this conversion used?

Converting between knot and metre per minute is common when working across metric and imperial systems, such as international trade, travel between countries with different measurement standards, or following instructions from a different region.

Worked examples

1 knot = 30.86666666 metre per minute

1 metre per minute = 0.01666667 metre per second

How to convert knot to metre per minute

To convert knot to metre per minute, multiply the value by 30.86666666.

To convert metre per minute back to knot, multiply by 0.03239741.

Measurement standards

The SI unit of speed is metres per second (m/s), a derived unit requiring no independent definition. The knot is defined as exactly one nautical mile (1,852 metres) per hour and is sanctioned for maritime and aeronautical navigation by the International Civil Aviation Organization.

Did you know?

The fastest human-made object is the Parker Solar Probe, which reached 635,266 km/h (about 176 km/s) in 2024 during a close pass of the Sun — fast enough to travel from New York to Tokyo in under a minute.

Quick reference: knot to metre per minute

Common values

Available Speed units

• metre per second conversions
• kilometre per hour conversions
• mile per hour conversions
• knot conversions
• foot per second conversions
• metre per minute conversions
• kilometre per second conversions
• mach (approx at sea level) conversions
• centimetre per second conversions
• mile per minute conversions

More knot conversions

• Convert knot to metre per second
• Convert knot to kilometre per hour
• Convert knot to mile per hour
• Convert knot to foot per second
• Convert knot to metre per minute
• Convert knot to kilometre per second
• Convert knot to mach (approx at sea level)
• Convert knot to centimetre per second
• Convert knot to mile per minute

Assumption: Mach uses an approximate sea-level reference (about 340.29 m/s).