How many miles per hour are in 1 knot?

1 kn equals 1.150779448 mph. This is an exact conversion factor defined by NIST.

How do I convert knots to miles per hour?

Multiply the value in kn by the conversion factor. For example, 10 kn = 11.50779448 mph. Use our calculator above for instant results.

Is the knots to miles per hour conversion exact?

Yes, this conversion is mathematically exact based on the international definition of these units (NIST SP 811).

Can I convert knots to miles per hour offline?

Yes! OmniConvert runs entirely in your browser — no internet connection needed after the page loads. Your data never leaves your device, ensuring complete privacy.

What is the difference between knots and miles per hour?

Knots (kn) and Miles per Hour (mph) are both units of speed but belong to different measurement systems. 1 kn = 1.150779448 mph. Use the converter above to switch between them instantly.

Knots to Miles per Hour (kn → mph) — Free Online Converter

kn → mph Reference Table

kn	mph
0.001 kn	0.001150779448 mph
0.002 kn	0.002301558896 mph
0.003 kn	0.003452338344 mph
0.004 kn	0.004603117792 mph
0.005 kn	0.00575389724 mph
0.006 kn	0.006904676688 mph
0.007 kn	0.008055456136 mph
0.008 kn	0.009206235584 mph
0.009 kn	0.01035701503 mph
0.01 kn	0.01150779448 mph
0.02 kn	0.02301558896 mph
0.03 kn	0.03452338344 mph
0.04 kn	0.04603117792 mph
0.05 kn	0.0575389724 mph
0.06 kn	0.06904676688 mph
0.07 kn	0.08055456136 mph
0.08 kn	0.09206235584 mph
0.09 kn	0.1035701503 mph
0.1 kn	0.1150779448 mph
0.2 kn	0.2301558896 mph
0.3 kn	0.3452338344 mph
0.4 kn	0.4603117792 mph
0.5 kn	0.575389724 mph
0.6 kn	0.6904676688 mph
0.7 kn	0.8055456136 mph
0.8 kn	0.9206235584 mph
0.9 kn	1.035701503 mph
1 kn	1.150779448 mph
1.5 kn	1.726169172 mph
2 kn	2.301558896 mph
2.5 kn	2.87694862 mph
3 kn	3.452338344 mph
3.5 kn	4.027728068 mph
4 kn	4.603117792 mph
4.5 kn	5.178507516 mph
5 kn	5.75389724 mph
5.5 kn	6.329286964 mph
6 kn	6.904676688 mph
6.5 kn	7.480066412 mph
7 kn	8.055456136 mph
7.5 kn	8.63084586 mph
8 kn	9.206235584 mph
8.5 kn	9.781625308 mph
9 kn	10.35701503 mph
9.5 kn	10.93240476 mph
10 kn	11.50779448 mph
11 kn	12.65857393 mph
12 kn	13.80935338 mph
13 kn	14.96013282 mph
14 kn	16.11091227 mph
15 kn	17.26169172 mph
16 kn	18.41247117 mph
17 kn	19.56325062 mph
18 kn	20.71403006 mph
19 kn	21.86480951 mph
20 kn	23.01558896 mph
25 kn	28.7694862 mph
30 kn	34.52338344 mph
35 kn	40.27728068 mph
40 kn	46.03117792 mph
45 kn	51.78507516 mph
50 kn	57.5389724 mph
55 kn	63.29286964 mph
60 kn	69.04676688 mph
65 kn	74.80066412 mph
70 kn	80.55456136 mph
75 kn	86.3084586 mph
80 kn	92.06235584 mph
85 kn	97.81625308 mph
90 kn	103.5701503 mph
95 kn	109.3240476 mph
100 kn	115.0779448 mph
120 kn	138.0935338 mph
125 kn	143.847431 mph
130 kn	149.6013282 mph
140 kn	161.1091227 mph
150 kn	172.6169172 mph
160 kn	184.1247117 mph
175 kn	201.3864034 mph
180 kn	207.1403006 mph
200 kn	230.1558896 mph
225 kn	258.9253758 mph
250 kn	287.694862 mph
275 kn	316.4643482 mph
300 kn	345.2338344 mph
350 kn	402.7728068 mph
400 kn	460.3117792 mph
450 kn	517.8507516 mph
500 kn	575.389724 mph
600 kn	690.4676688 mph
700 kn	805.5456136 mph
750 kn	863.084586 mph
800 kn	920.6235584 mph
900 kn	1035.701503 mph
1000 kn	1150.779448 mph
1200 kn	1380.935338 mph
1250 kn	1438.47431 mph
1500 kn	1726.169172 mph
1750 kn	2013.864034 mph
2000 kn	2301.558896 mph
2500 kn	2876.94862 mph
3000 kn	3452.338344 mph
4000 kn	4603.117792 mph
4500 kn	5178.507516 mph
5000 kn	5753.89724 mph
6000 kn	6904.676688 mph
7000 kn	8055.456136 mph
7500 kn	8630.84586 mph
8000 kn	9206.235584 mph
9000 kn	10357.01503 mph
10000 kn	11507.79448 mph
15000 kn	17261.69172 mph
20000 kn	23015.58896 mph
25000 kn	28769.4862 mph
50000 kn	57538.9724 mph
75000 kn	86308.4586 mph
100000 kn	115077.9448 mph

Values based on NIST SP 811 conversion factors

Real-World Examples

Typical sailboat cruising speed

20 kn = 23.01558896 mph

Category 1 hurricane threshold (≥64 knots)

64 kn = 73.64988467 mph

Cargo ship average speed

12 kn = 13.80935338 mph

Commercial jet cruising speed (≈480 knots typical, 140 for small aircraft)

140 kn = 161.1091227 mph

Tropical storm wind threshold (≥34 knots)

34 kn = 39.12650123 mph

Why Convert Knots to Miles per Hour?

Converting between knots (kn) and miles per hour (mph) is one of the most common speed conversions. Whether for engineering, cooking, travel, or science, knowing how to quickly convert kn to mph saves time and prevents errors.

Speed conversions from kn to mph are critical for navigation, aviation, and sports analytics. Pilots and sailors must constantly convert between knots, km/h, and mph to ensure safe travel and comply with international air and maritime regulations. For motorists driving across borders, understanding local speed limits in a different unit is vital to avoid fines and accidents. In sports, analyzing the performance of sprinters, cyclists, or racing cars often involves comparing speeds recorded in different measurement systems. Accurate speed conversion ensures safety, legal compliance, and fair competitive analysis.

How to Convert Knots to Miles per Hour

To convert knots to miles per hour, use the following formula:

mph = kn × 1.150779448

Example: 1 kn = 1.150779448 mph

For example, 5 kn = 5.75389724 mph, 10 kn = 11.50779448 mph, and 100 kn = 115.0779448 mph. For larger values, 1000 kn = 1150.779448 mph. Conversely, 1 mph = 0.8689762419 kn. Our calculator above performs this conversion instantly with full precision — no rounding errors.

Common Use Cases

Typical sailboat cruising speed: 20 kn = 23.01558896 mph
Category 1 hurricane threshold (≥64 knots): 64 kn = 73.64988467 mph
Cargo ship average speed: 12 kn = 13.80935338 mph
Commercial jet cruising speed (≈480 knots typical, 140 for small aircraft): 140 kn = 161.1091227 mph
Tropical storm wind threshold (≥34 knots): 34 kn = 39.12650123 mph

Common Mistakes to Avoid

Knots vs MPH: a Knot is faster than a Mile per Hour (1 Knot = 1.15 mph).
Mach numbers: speed of sound varies with temperature/altitude.
Pace confusion: mixing up speed (distance/time) with pace (time/distance).

Pro Tips

Highway math: 60 mph = 1 mile per minute. Easy for ETA calculation.
KPH to MPH: Multiply km/h by 0.6 to get mph (approx).
Light speed: Nothing travels faster than light (approx 300,000 km/s).

What is a Knot?

A unit of speed equal to one nautical mile per hour.

Exclusively used in maritime and aviation navigation.

What is a Mile per Hour?

Miles per hour (mph) is a unit of speed in the Imperial and US customary systems, expressing miles traveled in one hour.

Mph is the standard unit for speed limits and vehicle speeds in the United States and the United Kingdom.

Knots → Miles per Hour

Knots to Miles per Hour Formula