Knots to Miles per Hour

Convert kn to mph instantly — with a table, common speeds, and a live calculator.

1 kn equals 1.15 mph.

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Convert any speed

Result (mph)1.15 mph

kn to mph table

knmph
1 kn1.15 mph
2 kn2.3 mph
3 kn3.45 mph
5 kn5.75 mph
10 kn11.51 mph
15 kn17.26 mph
20 kn23.02 mph
25 kn28.77 mph
30 kn34.52 mph
40 kn46.03 mph
50 kn57.54 mph
55 kn63.29 mph
60 kn69.05 mph
65 kn74.8 mph
70 kn80.55 mph
80 kn92.06 mph
90 kn103.57 mph
100 kn115.08 mph
120 kn138.09 mph
150 kn172.62 mph
200 kn230.16 mph
300 kn345.23 mph

mph to kn (reverse)

mphkn
1 mph0.869 kn
2 mph1.74 kn
3 mph2.61 kn
5 mph4.34 kn
10 mph8.69 kn
15 mph13.03 kn
20 mph17.38 kn
25 mph21.72 kn
30 mph26.07 kn
40 mph34.76 kn
50 mph43.45 kn
55 mph47.79 kn
60 mph52.14 kn
65 mph56.48 kn
70 mph60.83 kn
80 mph69.52 kn
90 mph78.21 kn
100 mph86.9 kn
120 mph104.28 kn
150 mph130.35 kn
200 mph173.8 kn
300 mph260.69 kn

Common speeds

knmph
5 kn5.75 mph
10 kn11.51 mph
20 kn23.02 mph
30 kn34.52 mph
40 kn46.03 mph
50 kn57.54 mph
60 kn69.05 mph
70 kn80.55 mph
80 kn92.06 mph
100 kn115.08 mph
120 kn138.09 mph
200 kn230.16 mph

How it scales

2958861150255075100kn

100 km/h in other units

62.1mph27.8m/s54kn91.1ft/s

The ratio at a glance

1 kn1.15 mph

Metric, imperial, and nautical speed units

Kilometers per hour and meters per second are metric, miles per hour and feet per second belong to the imperial/US system, and knots (one nautical mile per hour) come from maritime and aviation use. One mile per hour is defined as exactly 0.44704 meters per second, and one knot as exactly 1.852 km/h.

Speed conversions are exact and rest on fixed factors — for more unit pairs, use our speed conversion hub.

Frequently asked questions

How many mph are in 1 kn?

1 kn equals 1.15 mph.

How many mph are in 2 kn?

2 kn equal 2.3 mph.

How do I convert kn to mph?

Multiply the speed in kn by 1.15 to get mph.

What is a knot?

A knot is one nautical mile per hour and equals exactly 1.852 km/h (about 1.15078 mph). Knots are used in maritime and aviation contexts.

Why are there so many speed units?

Kilometers per hour and meters per second are metric, miles per hour and feet per second belong to the imperial/US system, and knots come from maritime and aviation use. All conversions rest on fixed factors.

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