Miles per Hour to Knots (mph to kn) Converter
1 mile per hour (mph) = 0.868976 knots (kn). To convert miles per hour to knots, multiply by 0.868976: 70 mph × 0.868976 = 60.8283 kn.
Quick facts
- 1 mph = 0.868976 kn
- 1 kn = 1.15078 mph
- Formula: kn = mph × 0.868976
- Quick estimate: multiply by about 0.87
How to convert miles per hour to knots
- Take the value in miles per hour.
- Multiply it by 0.868976 (the number of knots in one mile per hour).
- Round the result to the precision you need.
Worked example (the UK motorway speed limit): 70 mph × 0.868976 = 60.8283 kn.
To convert knots back to miles per hour, multiply by 1.15078, or divide by 0.868976.
Source: NIST SP 811 (2008), derived from the metre, the international mile and the second.
Miles per Hour to Knots conversion table
| Miles per Hour [mph] | Knots [kn] |
|---|---|
| 0.01 mph | 0.0086897624 kn |
| 0.1 mph | 0.0868976242 kn |
| 1 mph | 0.868976242 kn |
| 2 mph | 1.737952484 kn |
| 3 mph | 2.6069287259 kn |
| 5 mph | 4.3448812099 kn |
| 10 mph | 8.6897624198 kn |
| 20 mph | 17.3795248395 kn |
| 50 mph | 43.4488120988 kn |
| 100 mph | 86.8976241976 kn |
| 1000 mph | 868.9762419757 kn |
mph to kn chart from 1 to 100
- 1 mph 0.868976 kn
- 2 mph 1.73795 kn
- 3 mph 2.60693 kn
- 4 mph 3.4759 kn
- 5 mph 4.34488 kn
- 6 mph 5.21386 kn
- 7 mph 6.08283 kn
- 8 mph 6.95181 kn
- 9 mph 7.82079 kn
- 10 mph 8.68976 kn
- 11 mph 9.55874 kn
- 12 mph 10.4277 kn
- 13 mph 11.2967 kn
- 14 mph 12.1657 kn
- 15 mph 13.0346 kn
- 16 mph 13.9036 kn
- 17 mph 14.7726 kn
- 18 mph 15.6416 kn
- 19 mph 16.5105 kn
- 20 mph 17.3795 kn
- 25 mph 21.7244 kn
- 30 mph 26.0693 kn
- 35 mph 30.4142 kn
- 40 mph 34.759 kn
- 45 mph 39.1039 kn
- 50 mph 43.4488 kn
- 55 mph 47.7937 kn
- 60 mph 52.1386 kn
- 65 mph 56.4835 kn
- 70 mph 60.8283 kn
- 75 mph 65.1732 kn
- 80 mph 69.5181 kn
- 85 mph 73.863 kn
- 90 mph 78.2079 kn
- 95 mph 82.5527 kn
- 100 mph 86.8976 kn
Knots to Miles per Hour conversion table
| Knots [kn] | Miles per Hour [mph] |
|---|---|
| 0.01 kn | 0.0115077945 mph |
| 0.1 kn | 0.1150779448 mph |
| 1 kn | 1.1507794479 mph |
| 2 kn | 2.3015588958 mph |
| 3 kn | 3.4523383438 mph |
| 5 kn | 5.7538972396 mph |
| 10 kn | 11.5077944792 mph |
| 20 kn | 23.0155889585 mph |
| 50 kn | 57.5389723962 mph |
| 100 kn | 115.0779447924 mph |
| 1000 kn | 1150.7794479241 mph |
Miles per Hour vs Knots
| Mile per Hour | Knot | |
|---|---|---|
| Symbol | mph | kn |
| Equals | 1 mph = 0.868976 kn | 1 kn = 1.15078 mph |
What is a mile per hour?
Distance in miles covered in one hour. The standard speed unit for driving and wind speed in the US and UK.
What is a knot?
Equal to one nautical mile per hour. Used in maritime and aviation navigation worldwide.
Frequently asked questions
How many knots are in a mile per hour?
There are 0.868976 knots in 1 mile per hour (1 mph = 0.868976242 kn).
How many miles per hour are in a knot?
There are 1.15078 miles per hour in 1 knot (1 kn = 1.1507794479 mph).
How do I convert miles per hour to knots?
Multiply the number of miles per hour by 0.868976. For example, 10 mph × 0.868976 = 8.68976 kn. To convert back, multiply by 1.15078.
What is 10 mph in knots?
10 mph = 8.68976 kn.
What is 100 mph in knots?
100 mph = 86.8976 kn.
Is the conversion exact?
Yes. The factor comes from the official definitions of both units (NIST SP 811 (2008), derived from the metre, the international mile and the second). Results are shown to up to 10 decimal places; round them to suit your purpose.
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