Miles per Hour to Knots
Convert miles per hour (mph) to knots (kn) instantly. Free online speed converter with formulas, tables and examples.
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Formula
kn = mph × 0.868976
mph = kn × 1.150779
Conversion table
| 1 mph | 0.868976 kn |
| 5 mph | 4.344881 kn |
| 10 mph | 8.689762 kn |
| 20 mph | 17.379525 kn |
| 50 mph | 43.448812 kn |
| 100 mph | 86.897624 kn |
| 500 mph | 434.488121 kn |
| 1000 mph | 868.976242 kn |
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Frequently asked questions
What is the source unit in this conversion?
The source unit is miles per hour (mph), the speed unit used mainly for road travel in the United States and the United Kingdom.
What is the destination unit in this conversion?
The destination unit is knots (kn), equal to one nautical mile per hour, and is the standard speed unit in maritime and aviation navigation.
How do I convert miles per hour to knots?
Multiply the miles per hour value by 0.868976 to get knots. For example, 100 mph × 0.868976 = 86.897624 kn.
Is the miles per hour to knots conversion exact?
Both units are defined using fixed conversion constants, so the results shown are calculated with full precision.
Where is this conversion commonly used?
It is used across transportation, sports timing, engineering, and scientific contexts where speeds need to be compared between miles per hour and knots.
Can I convert knots back to miles per hour?
Yes. Divide by 0.868976 (or multiply by 1.150779) to convert back, or use the knots to miles per hour converter directly.
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About this conversion
This page converts miles per hour (mph) into knots (kn), two units used to express speed or velocity.
Miles per Hour is the speed unit used mainly for road travel in the United States and the United Kingdom, while knots is equal to one nautical mile per hour, and is the standard speed unit in maritime and aviation navigation.
This conversion helps travelers, engineers, scientists, and enthusiasts compare speeds expressed in different measurement systems.
The formula is kn = mph × 0.868976, based on the fixed relationship between these two speed units.
Use the calculator above for instant results, or refer to the conversion table for common reference values.