📏 Miles per hour to Knots Converter
Convert miles per hour (mph) to knots (kn) instantly, with the formula, a worked example and a conversion table.
Quick answer: 1 mile per hour (mph) = 0.86897624 knots (kn). Formula: kn = mph × 0.86897624.
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Miles per hour to Knots Converter inputs
Result
Miles per hour to Knots conversion table
| Miles per hour (mph) | Knots (kn) |
|---|---|
| 0.1 mph | 0.086897624 kn |
| 0.5 mph | 0.43448812 kn |
| 1 mph | 0.86897624 kn |
| 2 mph | 1.7379525 kn |
| 3 mph | 2.6069287 kn |
| 5 mph | 4.3448812 kn |
| 10 mph | 8.6897624 kn |
| 20 mph | 17.379525 kn |
| 25 mph | 21.724406 kn |
| 50 mph | 43.448812 kn |
| 100 mph | 86.897624 kn |
| 1,000 mph | 868.97624 kn |
Other speed conversions
How to convert miles per hour to knots
Multiply the number of miles per hour by 0.86897624 to get knots: kn = mph × 0.86897624.
Example: 5 mph = 4.3448812 kn.
The mile per hour (mph) and the knot (kn) are both units of speed. Need the opposite direction? Use the kn to mph converter.
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Metric and imperial units
The metric system (SI) is used by almost every country and by science worldwide. Its units scale by powers of ten – 1 kilometer is 1,000 meters, 1 meter is 100 centimeters – which makes conversions inside the system easy. The imperial and US customary systems (inches, feet, pounds, gallons) are still used daily in the United States and partly in the UK.
Since 1959 the inch has been defined as exactly 2.54 centimeters and the pound as exactly 0.45359237 kilograms, so conversions between the two systems are exact. Note that a US gallon (3.785 L) and an imperial gallon (4.546 L) are different – choose the right one above.
This converter covers 10 categories and 66 units: length, weight, temperature, volume, area, speed, time, data, energy, pressure.
Frequently asked questions
How many knots are in a mile per hour?
1 mile per hour = 0.86897624 knots.
How do I convert miles per hour to knots?
Use the formula kn = mph × 0.86897624. For example, 5 mph = 4.3448812 kn.
How do I convert knots back to miles per hour?
1 knot = 1.1507794 miles per hour. Use the kn to mph converter linked on this page.
Are these conversions exact?
Yes – all factors use the internationally defined values (for example 1 inch = 2.54 cm exactly, 1 pound = 0.45359237 kg exactly). Results are rounded to 8 significant digits for display.