Convert Knot to Kilometre per hour
1 knot = 1.852 kilometre per hour (km/h). For example, 10 knot = 18.52 kilometre per hour and 100 knot = 185.2 kilometre per hour. Type any value below to convert knot to kilometre per hour both ways — it runs entirely in your browser.
Quick answer: Knot to Kilometre per hour
1 Knot = 1.852 Kilometre per hour (kn → km/h). To convert knot to kilometre per hour, multiply by 1.852. To convert kilometre per hour to knot, multiply by 0.5399568. The converter at the top does this instantly and both ways; the sections below give the formula, worked examples, a full conversion chart and answers to the most common knot-to-kilometre per hour questions.
How to convert Knot to Kilometre per hour
To convert knot to kilometre per hour, multiply the number of knot by the conversion factor 1.852, because 1 kn = 1.852 km/h. The conversion is linear, so the same factor works for any value — whole numbers, decimals or fractions. For the reverse direction, 1 km/h = 0.5399568 kn, so you divide by 1.852 (or multiply by 0.5399568) to turn kilometre per hour back into knot.
km/h = kn × 1.852 ·
kn = km/h × 0.5399568
- Write down the value you want to convert, in knot.
- Multiply it by 1.852.
- The result is the same area/length/quantity expressed in kilometre per hour.
Knot to Kilometre per hour — worked examples
Each row shows the exact arithmetic so you can follow the conversion step by step. For example, 5 knot is 9.26 kilometre per hour because 5 kn × 1.852 = 9.26 km/h.
| Knot | Calculation | Kilometre per hour |
|---|---|---|
| 1 kn | 1 kn × 1.852 = 1.852 km/h | 1.852 km/h |
| 2 kn | 2 kn × 1.852 = 3.704 km/h | 3.704 km/h |
| 3 kn | 3 kn × 1.852 = 5.556 km/h | 5.556 km/h |
| 5 kn | 5 kn × 1.852 = 9.26 km/h | 9.26 km/h |
| 7 kn | 7 kn × 1.852 = 12.964 km/h | 12.964 km/h |
| 10 kn | 10 kn × 1.852 = 18.52 km/h | 18.52 km/h |
| 12 kn | 12 kn × 1.852 = 22.224 km/h | 22.224 km/h |
| 15 kn | 15 kn × 1.852 = 27.78 km/h | 27.78 km/h |
| 20 kn | 20 kn × 1.852 = 37.04 km/h | 37.04 km/h |
| 25 kn | 25 kn × 1.852 = 46.3 km/h | 46.3 km/h |
| 50 kn | 50 kn × 1.852 = 92.6 km/h | 92.6 km/h |
| 100 kn | 100 kn × 1.852 = 185.2 km/h | 185.2 km/h |
Common Knot to Kilometre per hour conversions
These are the knot-to-kilometre per hour values people look up most often. Every figure is computed from the exact factor, so you can rely on them for quick reference:
- 1 knot = 1.852 kilometre per hour
- 2 knot = 3.704 kilometre per hour
- 2.5 knot = 4.63 kilometre per hour
- 3 knot = 5.556 kilometre per hour
- 4 knot = 7.408 kilometre per hour
- 5 knot = 9.26 kilometre per hour
- 6 knot = 11.112 kilometre per hour
- 7 knot = 12.964 kilometre per hour
- 8 knot = 14.816 kilometre per hour
- 9 knot = 16.668 kilometre per hour
- 10 knot = 18.52 kilometre per hour
- 12 knot = 22.224 kilometre per hour
- 15 knot = 27.78 kilometre per hour
- 20 knot = 37.04 kilometre per hour
- 25 knot = 46.3 kilometre per hour
- 30 knot = 55.56 kilometre per hour
- 50 knot = 92.6 kilometre per hour
- 75 knot = 138.9 kilometre per hour
- 100 knot = 185.2 kilometre per hour
- 200 knot = 370.4 kilometre per hour
- 500 knot = 926 kilometre per hour
- 1000 knot = 1,852 kilometre per hour
Knot to Kilometre per hour conversion chart (both directions)
The chart below converts knot to kilometre per hour and kilometre per hour to knot side by side, so it works whichever way you need. 1 knot = 1.852 kilometre per hour, and 1 kilometre per hour = 0.5399568 knot.
| Knot → Kilometre per hour | Kilometre per hour → Knot |
|---|---|
| 0.25 kn = 0.463 km/h | 0.25 km/h = 0.1349892 kn |
| 0.5 kn = 0.926 km/h | 0.5 km/h = 0.2699784 kn |
| 1 kn = 1.852 km/h | 1 km/h = 0.5399568 kn |
| 2 kn = 3.704 km/h | 2 km/h = 1.079914 kn |
| 3 kn = 5.556 km/h | 3 km/h = 1.61987 kn |
| 4 kn = 7.408 km/h | 4 km/h = 2.159827 kn |
| 5 kn = 9.26 km/h | 5 km/h = 2.699784 kn |
| 6 kn = 11.112 km/h | 6 km/h = 3.239741 kn |
| 7 kn = 12.964 km/h | 7 km/h = 3.779698 kn |
| 8 kn = 14.816 km/h | 8 km/h = 4.319654 kn |
| 9 kn = 16.668 km/h | 9 km/h = 4.859611 kn |
| 10 kn = 18.52 km/h | 10 km/h = 5.399568 kn |
| 12 kn = 22.224 km/h | 12 km/h = 6.479482 kn |
| 15 kn = 27.78 km/h | 15 km/h = 8.099352 kn |
| 20 kn = 37.04 km/h | 20 km/h = 10.79914 kn |
| 25 kn = 46.3 km/h | 25 km/h = 13.49892 kn |
| 30 kn = 55.56 km/h | 30 km/h = 16.1987 kn |
| 40 kn = 74.08 km/h | 40 km/h = 21.59827 kn |
| 50 kn = 92.6 km/h | 50 km/h = 26.99784 kn |
| 75 kn = 138.9 km/h | 75 km/h = 40.49676 kn |
| 100 kn = 185.2 km/h | 100 km/h = 53.99568 kn |
| 150 kn = 277.8 km/h | 150 km/h = 80.99352 kn |
| 200 kn = 370.4 km/h | 200 km/h = 107.9914 kn |
| 250 kn = 463 km/h | 250 km/h = 134.9892 kn |
| 500 kn = 926 km/h | 500 km/h = 269.9784 kn |
| 1000 kn = 1,852 km/h | 1000 km/h = 539.9568 kn |
Knot vs Kilometre per hour: which is bigger?
A knot is the larger unit: one knot equals 1.852 kilometre per hours. Put another way, you need 1.852 kilometre per hours to make a single knot.
What is a Knot? History, origin and usage
The knot takes its name from the old “chip log”: a knotted rope tied to a wooden panel was let out behind a ship while a sand-glass timed it, and the number of knots that ran through the sailor’s fingers gave the speed. The knots were spaced so that this count equalled the ship’s speed in nautical miles per hour — a method accurate to within a fraction of a percent of the modern value.
One knot is one nautical mile per hour, and it remains the standard speed unit in maritime and aviation navigation and in meteorology for wind speed. Its convenience is that a nautical mile equals one minute of latitude, so speed in knots ties directly to position on a chart.
A knot is exactly 1.852 kilometres per hour, the nautical mile being fixed at 1,852 metres. The United States adopted this international definition in 1954 and the United Kingdom in 1970; US aviation moved to knots and nautical miles around 1969.
What is a Kilometre per hour? History, origin and usage
The kilometre per hour pairs the metric kilometre with the hour, and it became the everyday road-speed unit as the metric system spread worldwide. It is a non-coherent metric unit — it mixes the kilometre with the hour rather than the second — but its human scale made it the popular choice for travel.
Kilometres per hour is the speed unit on road signs and vehicle speedometers across most of the world, the metric standard for traffic and travel. Many countries’ weather services also report wind speeds in km/h.
One kilometre per hour is exactly five-eighteenths of a metre per second, because an hour is 3,600 seconds and a kilometre is 1,000 metres. Most of the world posts road-sign speed limits in km/h, with the United States and United Kingdom among the few using miles per hour.
Convert 1 Knot to other units
It can help to see a knot next to the other units it is commonly compared with. One knot (kn) is equal to:
| 1 Knot equals | Unit |
|---|---|
| 0.5144444 m/s | Metre per second |
| 1.852 km/h | Kilometre per hour |
| 1.150779 mph | Mile per hour |
| 1.68781 ft/s | Foot per second |
| 51.44444 cm/s | Centimetre per second |
| 514.4444 mm/s | Millimetre per second |
Convert 1 Kilometre per hour to other units
One kilometre per hour (km/h) is equal to:
| 1 Kilometre per hour equals | Unit |
|---|---|
| 0.2777778 m/s | Metre per second |
| 0.6213712 mph | Mile per hour |
| 0.9113444 ft/s | Foot per second |
| 27.77778 cm/s | Centimetre per second |
| 277.7778 mm/s | Millimetre per second |
| 0.5399568 kn | Knot |
Tips for converting Knot to Kilometre per hour
- To go from knot to kilometre per hour, multiply by 1.852; to go back, divide by 1.852 (or multiply by 0.5399568).
- For a quick mental estimate, remember that 1 knot ≈ 1.852 kilometre per hour, so 10 knot ≈ 18.52 kilometre per hour.
- The converter above keeps full precision; the tables round for readability, so use the tool for exact figures.
- Both fields update live as you type — change either side to convert in that direction.
How to use this Knot to Kilometre per hour converter
Type a number into the Knot field and the equivalent in Kilometre per hour appears instantly — there is no “convert” button to press and nothing is sent to a server, so it works offline once the page has loaded and is safe for any data. You can also type into the Kilometre per hour field to convert the other way (kilometre per hour to knot). Use the swap control to flip the two units, and copy the result with a single click. Because the calculation runs in your browser with full floating-point precision, the converter is more exact than the rounded figures shown in the reference chart above — use the chart for quick look-ups and the tool for precise work.
Accuracy and method
Every figure on this page — the formula, the worked examples, the conversion chart and the “convert to other units” tables — is computed from a single verified conversion factor (1 kn = 1.852 km/h), never copied from a hand-typed lookup table that could drift. That factor is derived from each unit’s definition in terms of a common base unit, and an automated check re-verifies all of the site’s factors on every update, so the numbers here stay correct over time. This matters for knot-to-kilometre per hour conversions because a small rounding error in a published table compounds quickly at larger quantities; computing from the exact factor avoids that.
Sources
- NIST Special Publication 811 — Guide for the Use of the SI — publishes the exact metric equivalents of the customary units. The inch, foot, yard and mile are defined exactly in metres by the 1959 international yard-and-pound agreement, so every imperial figure on this page is exact, not rounded.
- BIPM — The International System of Units (SI Brochure) — the defining document for the SI, published by the International Bureau of Weights and Measures. It fixes the base unit that this conversion resolves to, which is why the factor here can be exact rather than approximate.
All speed factors are exact: 1 m/s = 3.6 km/h, 1 mph = 1.609344 km/h, 1 knot = 1.852 km/h, 1 ft/s = 0.3048 m/s. So the live tool and every number on this page always agree.
Frequently asked questions
- How many kilometre per hour are in 1 knot?
- 1 knot = 1.852 kilometre per hour (km/h). To convert any number of knot to kilometre per hour, multiply by 1.852.
- How do I convert knot to kilometre per hour?
- Multiply the number of knot by 1.852. For example, 10 knot = 10 × 1.852 = 18.52 kilometre per hour, and 25 knot = 46.3 kilometre per hour.
- How many knot are in 1 kilometre per hour?
- 1 kilometre per hour = 0.5399568 knot. So to convert kilometre per hour back to knot, multiply by 0.5399568.
- What is the formula to convert knot to kilometre per hour?
- kilometre per hour = knot × 1.852. The reverse formula is knot = kilometre per hour × 0.5399568.
- How much is 100 knot in kilometre per hour?
- 100 knot = 185.2 kilometre per hour. (And 1000 knot = 1,852 kilometre per hour.)
- Which is bigger, a knot or a kilometre per hour?
- A knot is larger: 1 knot = 1.852 kilometre per hour.
- Is this knot to kilometre per hour converter accurate?
- Yes — every value is computed from the exact 1.852 km/h per kn factor (not rounded look-up tables), and the factors are re-verified automatically on every update.
- Can I convert kilometre per hour to knot too?
- Yes. The converter works both ways — enter a value in either field. 1 kilometre per hour = 0.5399568 knot.