How many knots are in 1 mile per hour?

1 mph equals 0.8689762419 kn. This is an exact conversion factor defined by NIST.

How do I convert miles per hour to knots?

Multiply the value in mph by the conversion factor. For example, 10 mph = 8.689762419 kn. Use our calculator above for instant results.

Is the miles per hour to knots conversion exact?

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

Can I convert miles per hour to knots 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 miles per hour and knots?

Miles per Hour (mph) and Knots (kn) are both units of speed but belong to different measurement systems. 1 mph = 0.8689762419 kn. Use the converter above to switch between them instantly.

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

mph → kn Reference Table

mph	kn
0.001 mph	0.0008689762419 kn
0.002 mph	0.001737952484 kn
0.003 mph	0.002606928726 kn
0.004 mph	0.003475904968 kn
0.005 mph	0.00434488121 kn
0.006 mph	0.005213857451 kn
0.007 mph	0.006082833693 kn
0.008 mph	0.006951809935 kn
0.009 mph	0.007820786177 kn
0.01 mph	0.008689762419 kn
0.02 mph	0.01737952484 kn
0.03 mph	0.02606928726 kn
0.04 mph	0.03475904968 kn
0.05 mph	0.0434488121 kn
0.06 mph	0.05213857451 kn
0.07 mph	0.06082833693 kn
0.08 mph	0.06951809935 kn
0.09 mph	0.07820786177 kn
0.1 mph	0.08689762419 kn
0.2 mph	0.1737952484 kn
0.3 mph	0.2606928726 kn
0.4 mph	0.3475904968 kn
0.5 mph	0.434488121 kn
0.6 mph	0.5213857451 kn
0.7 mph	0.6082833693 kn
0.8 mph	0.6951809935 kn
0.9 mph	0.7820786177 kn
1 mph	0.8689762419 kn
1.5 mph	1.303464363 kn
2 mph	1.737952484 kn
2.5 mph	2.172440605 kn
3 mph	2.606928726 kn
3.5 mph	3.041416847 kn
4 mph	3.475904968 kn
4.5 mph	3.910393089 kn
5 mph	4.34488121 kn
5.5 mph	4.77936933 kn
6 mph	5.213857451 kn
6.5 mph	5.648345572 kn
7 mph	6.082833693 kn
7.5 mph	6.517321814 kn
8 mph	6.951809935 kn
8.5 mph	7.386298056 kn
9 mph	7.820786177 kn
9.5 mph	8.255274298 kn
10 mph	8.689762419 kn
11 mph	9.558738661 kn
12 mph	10.4277149 kn
13 mph	11.29669114 kn
14 mph	12.16566739 kn
15 mph	13.03464363 kn
16 mph	13.90361987 kn
17 mph	14.77259611 kn
18 mph	15.64157235 kn
19 mph	16.5105486 kn
20 mph	17.37952484 kn
25 mph	21.72440605 kn
30 mph	26.06928726 kn
35 mph	30.41416847 kn
40 mph	34.75904968 kn
45 mph	39.10393089 kn
50 mph	43.4488121 kn
55 mph	47.7936933 kn
60 mph	52.13857451 kn
65 mph	56.48345572 kn
70 mph	60.82833693 kn
75 mph	65.17321814 kn
80 mph	69.51809935 kn
85 mph	73.86298056 kn
90 mph	78.20786177 kn
95 mph	82.55274298 kn
100 mph	86.89762419 kn
120 mph	104.277149 kn
125 mph	108.6220302 kn
130 mph	112.9669114 kn
140 mph	121.6566739 kn
150 mph	130.3464363 kn
160 mph	139.0361987 kn
175 mph	152.0708423 kn
180 mph	156.4157235 kn
200 mph	173.7952484 kn
225 mph	195.5196544 kn
250 mph	217.2440605 kn
275 mph	238.9684665 kn
300 mph	260.6928726 kn
350 mph	304.1416847 kn
400 mph	347.5904968 kn
450 mph	391.0393089 kn
500 mph	434.488121 kn
600 mph	521.3857451 kn
700 mph	608.2833693 kn
750 mph	651.7321814 kn
800 mph	695.1809935 kn
900 mph	782.0786177 kn
1000 mph	868.9762419 kn
1200 mph	1042.77149 kn
1250 mph	1086.220302 kn
1500 mph	1303.464363 kn
1750 mph	1520.708423 kn
2000 mph	1737.952484 kn
2500 mph	2172.440605 kn
3000 mph	2606.928726 kn
4000 mph	3475.904968 kn
4500 mph	3910.393089 kn
5000 mph	4344.88121 kn
6000 mph	5213.857451 kn
7000 mph	6082.833693 kn
7500 mph	6517.321814 kn
8000 mph	6951.809935 kn
9000 mph	7820.786177 kn
10000 mph	8689.762419 kn
15000 mph	13034.64363 kn
20000 mph	17379.52484 kn
25000 mph	21724.40605 kn
50000 mph	43448.8121 kn
75000 mph	65173.21814 kn
100000 mph	86897.62419 kn

Values based on NIST SP 811 conversion factors

Why Convert Miles per Hour to Knots?

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

Speed conversions from mph to kn 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 Miles per Hour to Knots

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

kn = mph × 0.8689762419

Example: 1 mph = 0.8689762419 kn

For example, 5 mph = 4.34488121 kn, 10 mph = 8.689762419 kn, and 100 mph = 86.89762419 kn. For larger values, 1000 mph = 868.9762419 kn. Conversely, 1 kn = 1.150779448 mph. Our calculator above performs this conversion instantly with full precision — no rounding errors.

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 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.

What is a Knot?

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

Exclusively used in maritime and aviation navigation.

Miles per Hour → Knots

Miles per Hour to Knots Formula