Convert Miles per hour to Knots
1 mile per hour is 0.868976 kn. One mile per hour is exactly 0.868976241901 knots.
One mile per hour is 0.86897624 knots. To convert miles per hour to knots, multiply by 0.86897624; to go the other way, divide by 0.86897624 or multiply by 1.1507794. The factor is exact rather than rounded: it follows from NIST Special Publication 811. Exactly 0.44704 m/s, because a mile is exactly 1,609.344 metres.
Factor checked against the defining standard · How we check
Knots
0.868976 kn
- Miles per hour × 0.86897624
value * 0.8689762419010.869 kn
1 mile per hour in every speed unit
| Unit | Value | Exact factor |
|---|---|---|
| metres per second | 0.44704 m/s | × 0.44704 |
| kilometres per hour | 1.609344 km/h | × 1.609344 |
| miles per hour (as entered) | 1 mph | — |
| knots | 0.8689762419 kn | × 0.868976241901 |
| feet per second | 1.466666667 ft/s | × 1.46666666667 |
Factors are entered by hand from NIST Special Publication 811 rather than derived from a units library, so the ones that terminate are exact rather than rounded.
How do you convert miles per hour to knots?
- 1.Take the measurement in miles per hour.
- 2.Multiply by 0.86897624 — that is how many knots fit in one mile per hour.
- 3.To go back the other way, divide by 0.86897624, or multiply by 1.1507794.
Miles per hour to knots conversion table
| Miles per hour | Knots |
|---|---|
| 1 mph | 0.868976 kn |
| 2 mph | 1.737952 kn |
| 3 mph | 2.606929 kn |
| 4 mph | 3.475905 kn |
| 5 mph | 4.344881 kn |
| 6 mph | 5.213857 kn |
| 7 mph | 6.082834 kn |
| 8 mph | 6.95181 kn |
| 9 mph | 7.820786 kn |
| 10 mph | 8.689762 kn |
| 12 mph | 10.427715 kn |
| 15 mph | 13.034644 kn |
| 20 mph | 17.379525 kn |
| 25 mph | 21.724406 kn |
| 50 mph | 43.448812 kn |
| 100 mph | 86.897624 kn |
What are miles per hour and knots?
- Mile per hour (mph)
- Exactly 0.44704 m/s, because a mile is exactly 1,609.344 metres. US and UK road speeds.
- Knot (kn)
- One nautical mile per hour — exactly 1,852 metres per hour. Used at sea and in the air because a nautical mile is one minute of latitude, which makes navigation arithmetic simple.
Source: NIST Special Publication 811 — conversion factors for speed
Questions people actually ask
- How many knots are in a mile per hour?
- 0.86897624. One nautical mile per hour — exactly 1,852 metres per hour. Used at sea and in the air because a nautical mile is one minute of latitude, which makes navigation arithmetic simple.
- How do I convert knots back to miles per hour?
- Divide by 0.86897624, or multiply by 1.1507794 — they are the same operation.
Other speed conversions
Knots to miles per hour — the same conversion the other way.