Convert Knot to Mile per hour
1 knot = 1.150779 mile per hour (mph). For example, 10 knot = 11.50779 mile per hour and 100 knot = 115.0779 mile per hour. Type any value below to convert knot to mile per hour both ways — it runs entirely in your browser.
Quick answer: Knot to Mile per hour
1 Knot = 1.150779 Mile per hour (kn → mph). To convert knot to mile per hour, multiply by 1.150779. To convert mile per hour to knot, multiply by 0.8689762. 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-mile per hour questions.
How to convert Knot to Mile per hour
To convert knot to mile per hour, multiply the number of knot by the conversion factor 1.150779, because 1 kn = 1.150779 mph. The conversion is linear, so the same factor works for any value — whole numbers, decimals or fractions. For the reverse direction, 1 mph = 0.8689762 kn, so you divide by 1.150779 (or multiply by 0.8689762) to turn mile per hour back into knot.
mph = kn × 1.150779 ·
kn = mph × 0.8689762
- Write down the value you want to convert, in knot.
- Multiply it by 1.150779.
- The result is the same area/length/quantity expressed in mile per hour.
Knot to Mile per hour — worked examples
Each row shows the exact arithmetic so you can follow the conversion step by step. For example, 5 knot is 5.753897 mile per hour because 5 kn × 1.150779 = 5.753897 mph.
| Knot | Calculation | Mile per hour |
|---|---|---|
| 1 kn | 1 kn × 1.150779 = 1.150779 mph | 1.150779 mph |
| 2 kn | 2 kn × 1.150779 = 2.301559 mph | 2.301559 mph |
| 3 kn | 3 kn × 1.150779 = 3.452338 mph | 3.452338 mph |
| 5 kn | 5 kn × 1.150779 = 5.753897 mph | 5.753897 mph |
| 7 kn | 7 kn × 1.150779 = 8.055456 mph | 8.055456 mph |
| 10 kn | 10 kn × 1.150779 = 11.50779 mph | 11.50779 mph |
| 12 kn | 12 kn × 1.150779 = 13.80935 mph | 13.80935 mph |
| 15 kn | 15 kn × 1.150779 = 17.26169 mph | 17.26169 mph |
| 20 kn | 20 kn × 1.150779 = 23.01559 mph | 23.01559 mph |
| 25 kn | 25 kn × 1.150779 = 28.76949 mph | 28.76949 mph |
| 50 kn | 50 kn × 1.150779 = 57.53897 mph | 57.53897 mph |
| 100 kn | 100 kn × 1.150779 = 115.0779 mph | 115.0779 mph |
Common Knot to Mile per hour conversions
These are the knot-to-mile 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 = 1.150779 mile per hour
- 2 knot = 2.301559 mile per hour
- 2.5 knot = 2.876949 mile per hour
- 3 knot = 3.452338 mile per hour
- 4 knot = 4.603118 mile per hour
- 5 knot = 5.753897 mile per hour
- 6 knot = 6.904677 mile per hour
- 7 knot = 8.055456 mile per hour
- 8 knot = 9.206236 mile per hour
- 9 knot = 10.35702 mile per hour
- 10 knot = 11.50779 mile per hour
- 12 knot = 13.80935 mile per hour
- 15 knot = 17.26169 mile per hour
- 20 knot = 23.01559 mile per hour
- 25 knot = 28.76949 mile per hour
- 30 knot = 34.52338 mile per hour
- 50 knot = 57.53897 mile per hour
- 75 knot = 86.30846 mile per hour
- 100 knot = 115.0779 mile per hour
- 200 knot = 230.1559 mile per hour
- 500 knot = 575.3897 mile per hour
- 1000 knot = 1,150.779 mile per hour
Knot to Mile per hour conversion chart (both directions)
The chart below converts knot to mile per hour and mile per hour to knot side by side, so it works whichever way you need. 1 knot = 1.150779 mile per hour, and 1 mile per hour = 0.8689762 knot.
| Knot → Mile per hour | Mile per hour → Knot |
|---|---|
| 0.25 kn = 0.2876949 mph | 0.25 mph = 0.2172441 kn |
| 0.5 kn = 0.5753897 mph | 0.5 mph = 0.4344881 kn |
| 1 kn = 1.150779 mph | 1 mph = 0.8689762 kn |
| 2 kn = 2.301559 mph | 2 mph = 1.737952 kn |
| 3 kn = 3.452338 mph | 3 mph = 2.606929 kn |
| 4 kn = 4.603118 mph | 4 mph = 3.475905 kn |
| 5 kn = 5.753897 mph | 5 mph = 4.344881 kn |
| 6 kn = 6.904677 mph | 6 mph = 5.213857 kn |
| 7 kn = 8.055456 mph | 7 mph = 6.082834 kn |
| 8 kn = 9.206236 mph | 8 mph = 6.95181 kn |
| 9 kn = 10.35702 mph | 9 mph = 7.820786 kn |
| 10 kn = 11.50779 mph | 10 mph = 8.689762 kn |
| 12 kn = 13.80935 mph | 12 mph = 10.42771 kn |
| 15 kn = 17.26169 mph | 15 mph = 13.03464 kn |
| 20 kn = 23.01559 mph | 20 mph = 17.37952 kn |
| 25 kn = 28.76949 mph | 25 mph = 21.72441 kn |
| 30 kn = 34.52338 mph | 30 mph = 26.06929 kn |
| 40 kn = 46.03118 mph | 40 mph = 34.75905 kn |
| 50 kn = 57.53897 mph | 50 mph = 43.44881 kn |
| 75 kn = 86.30846 mph | 75 mph = 65.17322 kn |
| 100 kn = 115.0779 mph | 100 mph = 86.89762 kn |
| 150 kn = 172.6169 mph | 150 mph = 130.3464 kn |
| 200 kn = 230.1559 mph | 200 mph = 173.7952 kn |
| 250 kn = 287.6949 mph | 250 mph = 217.2441 kn |
| 500 kn = 575.3897 mph | 500 mph = 434.4881 kn |
| 1000 kn = 1,150.779 mph | 1000 mph = 868.9762 kn |
Knot vs Mile per hour: which is bigger?
A knot is the larger unit: one knot equals 1.150779 mile per hours. Put another way, you need 1.150779 mile 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 Mile per hour? History, origin and usage
The mile per hour expresses speed in imperial miles travelled each hour and is one of the oldest everyday speed units in the English-speaking world. It survives from the British imperial and US customary systems even where metric units rule elsewhere.
Miles per hour is the unit on road signs, speed limits and car speedometers in the United States, the United Kingdom and a handful of related territories. It is also common for reporting wind and storm speeds in those countries.
One mile per hour equals exactly 1.609344 kilometres per hour — the same exact factor that relates the mile to the kilometre. Although mph rules the road in the US and UK, both countries switch to knots at sea and in the air.
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 Mile per hour to other units
One mile per hour (mph) is equal to:
| 1 Mile per hour equals | Unit |
|---|---|
| 0.44704 m/s | Metre per second |
| 1.609344 km/h | Kilometre per hour |
| 1.466667 ft/s | Foot per second |
| 44.704 cm/s | Centimetre per second |
| 447.04 mm/s | Millimetre per second |
| 0.8689762 kn | Knot |
Tips for converting Knot to Mile per hour
- To go from knot to mile per hour, multiply by 1.150779; to go back, divide by 1.150779 (or multiply by 0.8689762).
- For a quick mental estimate, remember that 1 knot ≈ 1.150779 mile per hour, so 10 knot ≈ 11.50779 mile 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 Mile per hour converter
Type a number into the Knot field and the equivalent in Mile 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 Mile per hour field to convert the other way (mile 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 = 1.150779 mph), 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-mile 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 mile per hour are in 1 knot?
- 1 knot = 1.150779 mile per hour (mph). To convert any number of knot to mile per hour, multiply by 1.150779.
- How do I convert knot to mile per hour?
- Multiply the number of knot by 1.150779. For example, 10 knot = 10 × 1.150779 = 11.50779 mile per hour, and 25 knot = 28.76949 mile per hour.
- How many knot are in 1 mile per hour?
- 1 mile per hour = 0.8689762 knot. So to convert mile per hour back to knot, multiply by 0.8689762.
- What is the formula to convert knot to mile per hour?
- mile per hour = knot × 1.150779. The reverse formula is knot = mile per hour × 0.8689762.
- How much is 100 knot in mile per hour?
- 100 knot = 115.0779 mile per hour. (And 1000 knot = 1,150.779 mile per hour.)
- Which is bigger, a knot or a mile per hour?
- A knot is larger: 1 knot = 1.150779 mile per hour.
- Is this knot to mile per hour converter accurate?
- Yes — every value is computed from the exact 1.150779 mph per kn factor (not rounded look-up tables), and the factors are re-verified automatically on every update.
- Can I convert mile per hour to knot too?
- Yes. The converter works both ways — enter a value in either field. 1 mile per hour = 0.8689762 knot.