Knots to Millimeters per Second Converter
Enter the speed in knots below to convert it to millimeters per second.
Convert Knots to Millimeters per Second
Enter a value in knots (kn) to convert to millimeters per second (mm/s).
Knot to Millimeters per Second Conversion Table
Table showing various knot measurements converted to millimeters per second. Click any preset value or arrow to load it into the converter.
| Knots (kn) | Millimeters per Second (mm/s) |
|---|---|
| 1 kn | 514.4444444 mm/s |
| 2 kn | 1,028.8888889 mm/s |
| 2.5 kn | 1,286.1111111 mm/s |
| 5 kn | 2,572.2222222 mm/s |
| 10 kn | 5,144.4444444 mm/s |
| 15 kn | 7,716.6666667 mm/s |
| 20 kn | 10,288.8888889 mm/s |
| 25 kn | 12,861.1111111 mm/s |
| 30 kn | 15,433.3333333 mm/s |
| 50 kn | 25,722.2222222 mm/s |
How to Convert Knots to Millimeters per Second
To convert knots to millimeters per second, multiply the speed by the following conversion ratio: 514.4444444 millimeters per second/knot.
Since one knot is equal to 514.4444444 millimeters per second, you can use this simple formula to convert:
The speed in millimeters per second is equal to the speed in knots multiplied by 514.4444444.
For example, here's how to convert 5 knots to millimeters per second using the formula above.
How Many Millimeters per Second Are in a Knot?
There are 514.4444444 millimeters per second in a knot, which is why we use this value in the formula above.
Our knot to millimeters per second calculator automatically converts your speed measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Knots and millimeters per second are both units used to measure speed. Keep reading to learn more about each unit.
What Is a Knot?
A knot is a unit of speed equal to 0.5144444 meters per second (m/s), the base unit for speed. One nautical mile per hour (1.852 km/h = 0.514444 m/s). [1]
The knot is classified as a standard unit of speed. Knots can be abbreviated as kn; for example, 1 knot can be written as 1 kn.
When working with knots (kn) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, knots (kn) are widely used across standard speed applications within international standard workflows, engineering documentation, and technical data sheets.
What Is a Millimeters per Second?
A millimeters per second is a unit of speed equal to 1/1,000 of a meters per second (0.001 m/s). 3D printing and CNC speed unit equal to 0.001 m/s. [2]
The millimeters per second is classified as a metric and SI-compatible unit of speed. Millimeters per Second can be abbreviated as mm/s; for example, 1 millimeters per second can be written as 1 mm/s.
In the metric system, "milli" is the standard SI prefix for thousandths, or 10⁻³. This makes the millimeters per second (mm/s) a convenient decimal multiple of the meters per second (m/s).
In practice, millimeters per second (mm/s) are widely used across fine-tolerance laboratory, analytical, and micro-scale speed measurements within SI metric workflows, engineering documentation, and technical data sheets.
When converting speed between knots (kn) and millimeters per second (mm/s), keep full floating-point precision (1 kn = 514.4444444 mm/s; 1 mm/s = 0.0019438 kn) during intermediate calculations and round only the final millimeters per second figure to match your instrument tolerance.
More Knot & Millimeters per Second Conversions
Need to calculate in the opposite direction? Use our millimeters per second to knots calculator to switch your starting unit immediately. You can also explore related tools such as converting millimeters per second to knots, converting knots to miles per hour, or converting knots to kilometers per hour.
Convert from Knots
Frequently Asked Questions
References
- [1]NIST SP 811 StandardNIST SP 811 (NIST SP 811 App. B.9 (Velocity))·Speed Metrology Standard — Knots (kn) to Millimeters per Second (mm/s)
- [2]NIST OWM SpecificationNIST OWM (SI Units — Length & Distance)·Unit Specifications: Knot (kn) & Millimeters per Second (mm/s)
- [3]NIST CUU ReferenceNIST CUU (SI Coherent Derived Units (m/s))·Conversion Factors & Mathematical Basis (kn to mm/s)