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Knots to MPH Converter

Convert knots to miles per hour in one step. Results update live in both directions, with a worked formula, nearby units and a 1–100 chart you can click.

KnotsFrom

Miles per hourTo

mph

Decimal places

Step-by-step calculation

How to use the Knots to MPH Converter

Type a value in the Knots box. The miles per hour result appears instantly.
Going the other way? Type in the Miles per hour box, or press the ⇄ swap button.
Set the precision with the decimal places menu.
Check the working in the step-by-step box, then press Copy result or click any row in the tables below.

Knots to miles per hour formula

mph = kn × 1.150779448

Take the value in knots.
Multiply it by 1.150779448 (the number of miles per hour in one knot).

Example: 10 kn × 1.150779448 = 11.5078 mph.

Reverse formula (miles per hour to knots): kn = mph ÷ 1.150779448. Example: 73.6499 mph ÷ 1.150779448 = 64 kn.

Quick mental estimate: multiply by about 1.2. For exact answers use the converter above.

kn to mph conversion table (1–100)

Click any row to load it into the converter.

Knots to miles per hour

Knots	Miles per hour
1 kn	1.15 mph
2 kn	2.3 mph
3 kn	3.45 mph
4 kn	4.6 mph
5 kn	5.75 mph
6 kn	6.9 mph
7 kn	8.06 mph
8 kn	9.21 mph
9 kn	10.36 mph
10 kn	11.51 mph
11 kn	12.66 mph
12 kn	13.81 mph
13 kn	14.96 mph
14 kn	16.11 mph
15 kn	17.26 mph
16 kn	18.41 mph
17 kn	19.56 mph
18 kn	20.71 mph
19 kn	21.86 mph
20 kn	23.02 mph
21 kn	24.17 mph
22 kn	25.32 mph
23 kn	26.47 mph
24 kn	27.62 mph
25 kn	28.77 mph
26 kn	29.92 mph
27 kn	31.07 mph
28 kn	32.22 mph
29 kn	33.37 mph
30 kn	34.52 mph
31 kn	35.67 mph
32 kn	36.82 mph
33 kn	37.98 mph
34 kn	39.13 mph
35 kn	40.28 mph
36 kn	41.43 mph
37 kn	42.58 mph
38 kn	43.73 mph
39 kn	44.88 mph
40 kn	46.03 mph
41 kn	47.18 mph
42 kn	48.33 mph
43 kn	49.48 mph
44 kn	50.63 mph
45 kn	51.79 mph
46 kn	52.94 mph
47 kn	54.09 mph
48 kn	55.24 mph
49 kn	56.39 mph
50 kn	57.54 mph
51 kn	58.69 mph
52 kn	59.84 mph
53 kn	60.99 mph
54 kn	62.14 mph
55 kn	63.29 mph
56 kn	64.44 mph
57 kn	65.59 mph
58 kn	66.75 mph
59 kn	67.9 mph
60 kn	69.05 mph
61 kn	70.2 mph
62 kn	71.35 mph
63 kn	72.5 mph
64 kn	73.65 mph
65 kn	74.8 mph
66 kn	75.95 mph
67 kn	77.1 mph
68 kn	78.25 mph
69 kn	79.4 mph
70 kn	80.55 mph
71 kn	81.71 mph
72 kn	82.86 mph
73 kn	84.01 mph
74 kn	85.16 mph
75 kn	86.31 mph
76 kn	87.46 mph
77 kn	88.61 mph
78 kn	89.76 mph
79 kn	90.91 mph
80 kn	92.06 mph
81 kn	93.21 mph
82 kn	94.36 mph
83 kn	95.51 mph
84 kn	96.67 mph
85 kn	97.82 mph
86 kn	98.97 mph
87 kn	100.12 mph
88 kn	101.27 mph
89 kn	102.42 mph
90 kn	103.57 mph
91 kn	104.72 mph
92 kn	105.87 mph
93 kn	107.02 mph
94 kn	108.17 mph
95 kn	109.32 mph
96 kn	110.47 mph
97 kn	111.63 mph
98 kn	112.78 mph
99 kn	113.93 mph
100 kn	115.08 mph

Miles per hour to knots

Miles per hour	Knots
1 mph	0.87 kn
2 mph	1.74 kn
3 mph	2.61 kn
4 mph	3.48 kn
5 mph	4.34 kn
6 mph	5.21 kn
7 mph	6.08 kn
8 mph	6.95 kn
9 mph	7.82 kn
10 mph	8.69 kn
11 mph	9.56 kn
12 mph	10.43 kn
13 mph	11.3 kn
14 mph	12.17 kn
15 mph	13.03 kn
16 mph	13.9 kn
17 mph	14.77 kn
18 mph	15.64 kn
19 mph	16.51 kn
20 mph	17.38 kn
21 mph	18.25 kn
22 mph	19.12 kn
23 mph	19.99 kn
24 mph	20.86 kn
25 mph	21.72 kn
26 mph	22.59 kn
27 mph	23.46 kn
28 mph	24.33 kn
29 mph	25.2 kn
30 mph	26.07 kn
31 mph	26.94 kn
32 mph	27.81 kn
33 mph	28.68 kn
34 mph	29.55 kn
35 mph	30.41 kn
36 mph	31.28 kn
37 mph	32.15 kn
38 mph	33.02 kn
39 mph	33.89 kn
40 mph	34.76 kn
41 mph	35.63 kn
42 mph	36.5 kn
43 mph	37.37 kn
44 mph	38.23 kn
45 mph	39.1 kn
46 mph	39.97 kn
47 mph	40.84 kn
48 mph	41.71 kn
49 mph	42.58 kn
50 mph	43.45 kn
51 mph	44.32 kn
52 mph	45.19 kn
53 mph	46.06 kn
54 mph	46.92 kn
55 mph	47.79 kn
56 mph	48.66 kn
57 mph	49.53 kn
58 mph	50.4 kn
59 mph	51.27 kn
60 mph	52.14 kn
61 mph	53.01 kn
62 mph	53.88 kn
63 mph	54.75 kn
64 mph	55.61 kn
65 mph	56.48 kn
66 mph	57.35 kn
67 mph	58.22 kn
68 mph	59.09 kn
69 mph	59.96 kn
70 mph	60.83 kn
71 mph	61.7 kn
72 mph	62.57 kn
73 mph	63.44 kn
74 mph	64.3 kn
75 mph	65.17 kn
76 mph	66.04 kn
77 mph	66.91 kn
78 mph	67.78 kn
79 mph	68.65 kn
80 mph	69.52 kn
81 mph	70.39 kn
82 mph	71.26 kn
83 mph	72.13 kn
84 mph	72.99 kn
85 mph	73.86 kn
86 mph	74.73 kn
87 mph	75.6 kn
88 mph	76.47 kn
89 mph	77.34 kn
90 mph	78.21 kn
91 mph	79.08 kn
92 mph	79.95 kn
93 mph	80.81 kn
94 mph	81.68 kn
95 mph	82.55 kn
96 mph	83.42 kn
97 mph	84.29 kn
98 mph	85.16 kn
99 mph	86.03 kn
100 mph	86.9 kn

Common values

Knots	Miles per hour	Example
1 kn	1.15 mph	1 knot
5 kn	5.75 mph	Sailing boat
10 kn	11.51 mph	10 knots
15 kn	17.26 mph	15 knots
20 kn	23.02 mph	Fast ferry
30 kn	34.52 mph	30 knots
64 kn	73.65 mph	Hurricane force
150 kn	172.62 mph	Small plane cruise
250 kn	287.69 mph	250 knots
500 kn	575.39 mph	Airliner cruise (approx.)

About knots and miles per hour

Knots (kn). A knot is one nautical mile (exactly 1,852 m) per hour. It is used at sea and in aviation.

Miles per hour (mph). Miles per hour is the speed unit used on roads in the US and UK.

Frequently asked questions

What is 1 knot in miles per hour?

One knot equals 1.15078 miles per hour.

How do you convert knots to miles per hour?

Multiply the number of knots by 1.150779448. For example, 10 kn × 1.150779448 = 11.5078 mph.

What is 64 knots in miles per hour?

64 kn is 73.6499 mph (hurricane force).

How do I convert miles per hour back to knots?

Divide by 1.150779448, or press the ⇄ swap button above. For example, 73.6499 mph ÷ 1.150779448 = 64 kn.

What is a knot?

A knot is one nautical mile per hour. A nautical mile is exactly 1,852 meters (about one minute of latitude), so 1 knot = 1.852 km/h ≈ 1.151 mph.

Does this converter work offline?

Once the page has loaded, the conversion runs entirely in your browser, so it keeps working without a connection. It is free and needs no sign-up.

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