Knots to Kilometers per Hour Converter
Enter the speed in knots below to convert it to kilometers per hour.
Convert Knots to Kilometers per Hour
Enter a value in knots (kn) to convert to kilometers per hour (km/h).
Knot to Kilometers per Hour Conversion Table
Table showing various knot measurements converted to kilometers per hour. Click any preset value or arrow to load it into the converter.
| Knots (kn) | Kilometers per Hour (km/h) |
|---|---|
| 1 kn | 1.852 km/h |
| 2 kn | 3.704 km/h |
| 5 kn | 9.26 km/h |
| 10 kn | 18.52 km/h |
| 15 kn | 27.78 km/h |
| 20 kn | 37.04 km/h |
| 25 kn | 46.3 km/h |
| 30 kn | 55.56 km/h |
| 40 kn | 74.08 km/h |
| 50 kn | 92.6 km/h |
How to Convert Knots to Kilometers per Hour
To convert knots to kilometers per hour, multiply the speed by the following conversion ratio: 1.852 kilometers per hour/knot.
Since one knot is equal to 1.852 kilometers per hour, you can use this simple formula to convert:
The speed in kilometers per hour is equal to the speed in knots multiplied by 1.852.
For example, here's how to convert 20 knots to kilometers per hour using the formula above.
How Many Kilometers per Hour Are in a Knot?
There are 1.852 kilometers per hour in a knot, which is why we use this value in the formula above.
Our knot to kilometers per hour calculator automatically converts your speed measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Knots and kilometers per hour 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 Kilometers per Hour?
A kilometers per hour is a unit of speed equal to 0.2777778 meters per second (m/s), the base unit for speed. Standard metric road speed unit (1 m/s = 3.6 km/h). [2]
The kilometers per hour is classified as a metric and SI-compatible unit of speed. Kilometers per Hour can be abbreviated as km/h; for example, 1 kilometers per hour can be written as 1 km/h.
In the metric system, "kilo" is the standard SI prefix for thousands, or 10³. This makes the kilometers per hour (km/h) a convenient decimal multiple of the meters per second (m/s).
In practice, kilometers per hour (km/h) are widely used across standard speed applications within SI metric workflows, engineering documentation, and technical data sheets.
When converting speed between knots (kn) and kilometers per hour (km/h), keep full floating-point precision (1 kn = 1.852 km/h; 1 km/h = 0.5399568 kn) during intermediate calculations and round only the final kilometers per hour figure to match your instrument tolerance.
More Knot & Kilometers per Hour Conversions
Need to calculate in the opposite direction? Use our kilometers per hour to knots calculator to switch your starting unit immediately. You can also explore related tools such as converting kilometers per hour to knots, converting miles per hour to kilometers per hour, or converting meters per second 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 Kilometers per Hour (km/h)
- [2]NIST OWM SpecificationNIST OWM (SI Units — Length & Distance)·Unit Specifications: Knot (kn) & Kilometers per Hour (km/h)
- [3]NIST CUU ReferenceNIST CUU (SI Coherent Derived Units (m/s))·Conversion Factors & Mathematical Basis (kn to km/h)