1 kn = 1.852 km/h
| Knot (kn) | Kilometers per hour (km/h) |
|---|---|
| 1 | 1.852 |
| 2 | 3.704 |
| 5 | 9.26 |
| 8 | 14.816 |
| 10 | 18.52 |
| 12 | 22.224 |
| 15 | 27.78 |
| 18 | 33.336 |
| 20 | 37.04 |
| 25 | 46.3 |
| 30 | 55.56 |
| 35 | 64.82 |
| 40 | 74.08 |
| 45 | 83.34 |
| 50 | 92.6 |
| 60 | 111.12 |
| 64 | 118.528 |
| 75 | 138.9 |
| 100 | 185.2 |
| 150 | 277.8 |
To convert knots to km/h, multiply by 1.852. One knot is exactly 1.852 kilometers per hour.
1 kn = 1.852 km/h
Convert 30 knots to km/h: 30 × 1.852 = 55.56 km/h
Convert 450 knots (cruising jet) to km/h: 450 × 1.852 = 833.4 km/h
To convert km/h to knots, divide by 1.852.
\u2022 10 knots (18.5 km/h) is a gentle sailing speed — about as fast as a brisk bicycle ride.
\u2022 30 knots (55.6 km/h) is fast for a sailboat and moderate for a motorboat.
\u2022 64 knots (118.5 km/h) is the threshold for hurricane-force winds.
\u2022 480 knots (889 km/h) is the typical cruising speed of a Boeing 787.
Knots and km/h are both used internationally, but in different contexts. Knots dominate in aviation and maritime, while km/h is the standard for road vehicles and weather reporting in most metric countries.
One knot is exactly one nautical mile per hour, and one nautical mile is exactly 1.852 kilometers. This clean relationship (1 kn = 1.852 km/h exactly) comes from the nautical mile’s definition as one minute of arc of latitude on Earth’s surface.
Many international weather services report wind speeds in km/h for the general public, but maritime and aviation forecasts use knots. If a marine forecast warns of 30-knot winds, that’s 55.6 km/h — strong enough to create rough seas and whitecaps. Severe weather warnings at 50+ knots (92.6+ km/h) indicate dangerous conditions.
A fast motorboat at 40 knots is traveling at 74 km/h. A speed boat at 60 knots is doing 111 km/h. A ferry at 20 knots cruises at 37 km/h. Comparing these to road speeds helps visualize how fast vessels are actually moving.
One knot equals exactly 1.852 km/h.
Multiply the knots by 1.852. For example, 20 knots × 1.852 = 37.04 km/h.
One knot is one nautical mile per hour. A nautical mile is 1.852 km (or about 1.15 statute miles). It’s based on the geometry of the Earth.
Yes, this is an exact relationship. One nautical mile is defined as exactly 1.852 kilometers.