Knots to Miles per Hour Converter
Enter the speed in knots below to convert it to miles per hour.
Convert Knots to Miles per Hour
Enter a value in knots (kn) to convert to miles per hour (mph).
Knot to Miles per Hour Conversion Table
Table showing various knot measurements converted to miles per hour. Click any preset value or arrow to load it into the converter.
| Knots (kn) | Miles per Hour (mph) |
|---|---|
| 1 kn | 1.1507794 mph |
| 2 kn | 2.3015589 mph |
| 5 kn | 5.7538972 mph |
| 10 kn | 11.5077945 mph |
| 12.5 kn | 14.3847431 mph |
| 15 kn | 17.2616917 mph |
| 20 kn | 23.015589 mph |
| 25 kn | 28.7694862 mph |
| 30 kn | 34.5233834 mph |
| 50 kn | 57.5389724 mph |
How to Convert Knots to Miles per Hour
To convert knots to miles per hour, multiply the speed by the following conversion ratio: 1.1507794 miles per hour/knot.
Since one knot is equal to 1.1507794 miles per hour, you can use this simple formula to convert:
The speed in miles per hour is equal to the speed in knots multiplied by 1.1507794.
For example, here's how to convert 25 knots to miles per hour using the formula above.
How Many Miles per Hour Are in a Knot?
There are 1.1507794 miles per hour in a knot, which is why we use this value in the formula above.
Our knot to miles per hour calculator automatically converts your speed measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Knots and miles 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 Miles per Hour?
A miles per hour is a unit of speed equal to 0.44704 meters per second (m/s), the base unit for speed. Imperial & US road speed unit (1 mph = 1.609344 km/h). [2]
The miles per hour is classified as a US customary and imperial unit of speed. Miles per Hour can be abbreviated as mph; for example, 1 miles per hour can be written as 1 mph.
When working with miles per hour (mph) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, miles per hour (mph) are widely used across standard speed applications within US customary and imperial workflows, engineering documentation, and technical data sheets.
When converting speed between knots (kn) and miles per hour (mph), keep full floating-point precision (1 kn = 1.1507794 mph; 1 mph = 0.8689762 kn) during intermediate calculations and round only the final miles per hour figure to match your instrument tolerance.
More Knot & Miles per Hour Conversions
Need to calculate in the opposite direction? Use our miles per hour to knots converter (mph to kn) to switch your starting unit immediately. You can also explore related tools such as converting kilometers per hour to miles per hour, converting feet per second 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 Miles per Hour (mph)
- [2]NIST OWM SpecificationNIST OWM (SI Units — Length & Distance)·Unit Specifications: Knot (kn) & Miles per Hour (mph)
- [3]NIST CUU ReferenceNIST CUU (SI Coherent Derived Units (m/s))·Conversion Factors & Mathematical Basis (kn to mph)