Knot (kn)
One nautical mile per hour: exactly 1852/3600 meters per second.
What is a knot?
- Symbol
- kn
- Quantity
- Speed
- Unit system
- other
- Definition
- One nautical mile per hour: exactly 1852/3600 meters per second.
- Exact
- Yes, the value is exact by definition
- Source
- NIST Special Publication 811 (2008), Appendix B.8
Common applications
Used in aviation, shipping and for wind speed at sea. One knot is one nautical mile per hour.
Knot in other speed units
- 1 kn ≈ 51.44444444 cm/sCentimeter per second
- 1 kn ≈ 0.5144444444 m/sMeter per second
- 1 kn = 1.852 km/hKnot to Kilometer per hour converter
- 1 kn ≈ 0.0005144444444 km/sKilometer per second
- 1 kn ≈ 1.150779448 mphKnot to Mile per hour converter
- 1 kn ≈ 1.687809857 ft/sFoot per second
- 1 kn ≈ 1.716001956e-9 cSpeed of light in vacuum
Knot quick reference
| Knot | Kilometer per hour | Mile per hour | Centimeter per second |
|---|---|---|---|
| 1 kn | = 1.852 km/h | ≈ 1.150779448 mph | ≈ 51.44444444 cm/s |
| 10 kn | = 18.52 km/h | ≈ 11.50779448 mph | ≈ 514.4444444 cm/s |
| 100 kn | = 185.2 km/h | ≈ 115.0779448 mph | ≈ 5144.444444 cm/s |
| 1000 kn | = 1852 km/h | ≈ 1150.779448 mph | ≈ 51444.44444 cm/s |
Where the knot fits
The next smaller speed unit is the mile per hour (mph). 1 kn ≈ 1.150779448 mph, and 1 mph ≈ 0.8689762419 kn.
The next larger speed unit is the meter per second (m/s). 1 kn ≈ 0.5144444444 m/s, and 1 m/s ≈ 1.943844492 kn.
Frequently asked questions
- How many kilometers per hour are in one knot?
- One knot = 1.852 km/h (kilometers per hour).
- How many miles per hour are in one knot?
- One knot ≈ 1.150779448 mph (miles per hour).
- How many centimeters per second are in one knot?
- One knot ≈ 51.44444444 cm/s (centimeters per second).