Kilometer/h to Knot Converter
Enter the value that you want to convert kilometer/h (km/h) to knot (kt) or knot to kilometer/h.Also written as KM/H to KT conversion.
1 kilometer/h = 0.5399568 knot
Formula: knot = kilometer/h value × 0.5399568
KM/H to KT — kilometer/h to knot
10 kilometer/h = 5.39957 knot
Popular Speed Converters:
Kilometer/h vs Knot
What is Kilometer/h?
The kilometer per hour (km/h) is the standard speed unit for road transport in most countries worldwide.
Speed limits, car speedometers, weather wind reports, and train schedules across Europe, Asia, Africa, and South America all use km/h. The unit represents how many kilometers an object travels in one hour. Highway speeds typically range from 80-130 km/h depending on the country. The world land speed record is 1,228 km/h.
Understanding the Knot
The knot (1 nautical mile per hour) is the universal speed unit for maritime navigation and aviation worldwide.
One knot equals exactly 1.852 km/h or 1.15078 mph. The name comes from the historical practice of measuring ship speed by counting knots on a rope pulled overboard. All aircraft airspeed indicators display in knots, air traffic control communicates in knots, and nautical charts are designed around the nautical mile. Tropical storm wind speeds are officially reported in knots.
Speed Unit Conversions
Speed units vary by transport mode and country. Automobiles use km/h in most countries but mph in the US and UK. Aviation uses knots worldwide. Shipping uses knots for surface speed. Physics calculations require meters per second. Wind speeds appear in km/h, mph, knots, or Beaufort scale depending on the meteorological service. Sports timing uses m/s for track events but km/h or mph for ball speeds.
kilometer/h to knot metric conversion table
| 0.01 km/h | = | 0.00540 kt |
| 0.1 km/h | = | 0.05400 kt |
| 1 km/h | = | 0.53996 kt |
| 2 km/h | = | 1.07991 kt |
| 3 km/h | = | 1.61987 kt |
| 4 km/h | = | 2.15983 kt |
| 5 km/h | = | 2.69978 kt |
| 6 km/h | = | 3.23974 kt |
| 7 km/h | = | 3.77970 kt |
| 8 km/h | = | 4.31965 kt |
| 9 km/h | = | 4.85961 kt |
| 10 km/h | = | 5.39957 kt |
| 11 km/h | = | 5.93952 kt |
| 12 km/h | = | 6.47948 kt |
| 13 km/h | = | 7.01944 kt |
| 14 km/h | = | 7.55940 kt |
| 15 km/h | = | 8.09935 kt |
| 16 km/h | = | 8.63931 kt |
| 17 km/h | = | 9.17927 kt |
| 18 km/h | = | 9.71922 kt |
| 19 km/h | = | 10.25918 kt |
| 20 km/h | = | 10.79914 kt |
| 30 km/h | = | 16.19870 kt |
| 40 km/h | = | 21.59827 kt |
| 50 km/h | = | 26.99784 kt |
| 60 km/h | = | 32.39741 kt |
| 70 km/h | = | 37.79698 kt |
| 80 km/h | = | 43.19654 kt |
| 90 km/h | = | 48.59611 kt |
| 100 km/h | = | 53.99568 kt |
| 200 km/h | = | 107.99136 kt |
| 300 km/h | = | 161.98704 kt |
| 400 km/h | = | 215.98272 kt |
| 500 km/h | = | 269.97840 kt |
| 600 km/h | = | 323.97408 kt |
| 700 km/h | = | 377.96976 kt |
| 800 km/h | = | 431.96544 kt |
| 900 km/h | = | 485.96112 kt |
| 1000 km/h | = | 539.95680 kt |
How to Convert KM/H to KT (Kilometer/h to Knot)?
We can convert kilometer/h to knot by using an example.
Example:
Convert 20 Kilometer/h to Knot?
We know 1 Kilometer/h = 0.5399568 knot; 1 Knot = 1.8520000 kilometer/h.
20 kilometer/h = ___kt
20 × 0.5399568 = 10.79914 kt (we know 1 kilometer/h = 0.5399568 knot)
Answer:
20 kilometer/h = 10.79914 knot
How to Convert km/h to Knots (Step-by-Step)
Knots are the standard speed unit in maritime and aviation navigation. One knot equals one nautical mile per hour (1.852 km/h). Converting km/h to knots is essential for chart plotting and voyage planning.
- Write down the speed in kilometers per hour (km/h).
- Divide the km/h value by 1.852 to get knots.
- Alternatively, multiply by 0.539957 for the same result.
- Round to one decimal place for practical navigation use.
Common km/h to Knots Conversions
Practical speed conversions for maritime navigation, sailing conditions, and wind speeds used in weather forecasting.
| Kilometer/h | Knot |
|---|---|
| 5 km/h | 2.7 knots |
| 10 km/h | 5.4 knots |
| 20 km/h | 10.8 knots |
| 30 km/h | 16.2 knots |
| 40 km/h | 21.6 knots |
| 55 km/h | 29.7 knots |
| 75 km/h | 40.5 knots |
| 100 km/h | 54.0 knots |
| 120 km/h | 64.8 knots |
Solved Examples: km/h to Knots
Question 1: A cargo ship travels at 28 km/h. What is its speed in knots for the voyage log?
Solution:
Formula: knots = km/h ÷ 1.852
= 28 ÷ 1.852
= 15.12 knots
Answer: 28 km/h = 15.1 knots (typical Panamax container ship speed)
Question 2: A weather report gives wind speed as 90 km/h. Convert to knots for maritime advisory.
Solution:
knots = km/h ÷ 1.852
= 90 ÷ 1.852
= 48.6 knots
Answer: 90 km/h = 48.6 knots (storm force — Beaufort Force 10)
Question 3: A sailing yacht makes 14 km/h in favorable winds. What is this in knots?
Solution:
knots = km/h ÷ 1.852
= 14 ÷ 1.852
= 7.56 knots
Answer: 14 km/h = 7.6 knots (good cruising speed for a 35-foot sailboat)
Question 4: A ferry operates at 45 km/h between islands. Convert to knots.
Solution:
knots = km/h ÷ 1.852
= 45 ÷ 1.852
= 24.3 knots
Answer: 45 km/h = 24.3 knots (standard inter-island ferry speed)
Practice Questions
Try solving these on your own to test your understanding:
- Convert 35 km/h to knots. (Answer: 18.9 knots)
- A fast patrol boat does 65 km/h. What is that in knots? (Answer: 35.1 knots)
- Wind speed is reported as 25 km/h. Convert to knots. (Answer: 13.5 knots)
- A cruise liner makes 50 km/h. Express in knots. (Answer: 27.0 knots)
- Convert 110 km/h wind gust to knots. (Answer: 59.4 knots)
Chart Plotting and Voyage Planning with Knots
Nautical charts use nautical miles as the distance unit, making knots the natural speed unit. One nautical mile equals one minute of latitude (1.852 km). When plotting a course, speed in knots directly gives distance in nautical miles per hour, simplifying time-distance calculations. For example, at 12 knots, a vessel covers 12 nautical miles per hour. To travel 180 nautical miles: 180 ÷ 12 = 15 hours. This elegant relationship between speed, distance, and chart coordinates is why maritime navigation has used knots for centuries.
Beaufort Wind Scale in Knots
The Beaufort scale classifies wind intensity: Force 1 (1-3 knots) creates ripples. Force 4 (11-16 knots) produces small waves with whitecaps — ideal sailing weather. Force 7 (28-33 knots) is a near gale with foam-streaked seas. Force 10 (48-55 knots) is a storm with very high waves. Force 12 (64+ knots) is hurricane force. Maritime weather forecasts worldwide use knots, so converting from km/h (used in many national weather services) to knots is a routine task for mariners checking forecasts from different countries.
Fuel Calculation at Sea
Ship fuel consumption increases roughly with the cube of speed. A vessel burning 50 tons/day at 15 knots might burn 95 tons/day at 18 knots (only 20% faster but 90% more fuel). Shipping companies convert between km/h and knots when coordinating with port schedules given in local time and distances in kilometers, while voyage planning uses nautical miles and knots. "Slow steaming" at 12-14 knots (22-26 km/h) instead of 20+ knots (37+ km/h) can reduce fuel consumption by 40-60%, which is why modern shipping increasingly uses lower speeds.
Key Takeaways
- Divide km/h by 1.852 to get knots (or multiply by 0.54).
- 1 knot = 1 nautical mile/hour = 1.852 km/h exactly.
- The nautical mile equals one minute of latitude — this makes chart plotting intuitive.
- Hurricane force starts at 64 knots (119 km/h) on the Beaufort scale.
- Ship fuel consumption scales roughly with the cube of speed in knots.
- Maritime weather worldwide uses knots — conversion from km/h is a daily task for sailors.
Kilometer/h to Knot Conversion Formula
knot = kilometer/h × 0.5399568
1 kilometer/h = 0.5399568 knot
1 knot = 1.8520000 kilometer/h
Reverse: kilometer/h = knot × 1.8520000
Frequently Asked Questions
How many knot are in 1 kilometer/h?
There are 0.5399568 knot in 1 kilometer/h. To convert kilometer/h to knot, multiply the value by 0.5399568.
How do I convert kilometer/h to knot?
Multiply your kilometer/h value by 0.5399568 to get the equivalent in knot. For example, 5 kilometer/h = 5 × 0.5399568 = 2.69978 knot.
How do I convert knot to kilometer/h?
Multiply your knot value by 1.8520000 to get the equivalent in kilometer/h. Alternatively, divide by 0.5399568.
What is 10 kilometer/h in knot?
10 kilometer/h is equal to 5.39957 knot.
What is 100 kilometer/h in knot?
100 kilometer/h is equal to 53.99568 knot.