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Knots to mph

Convert Knots to mph

"Knots to mph" Calculator

How to convert knots to miles per hour

Worked example: 30 knots ≈ 34.52 mph

30 knots × 1,852 ÷ 1,609.344 ≈ 34.52 mph

1,852 m in a nautical mile; 1,609.344 m in a mile

Rule: miles per hour = knots × 1,852 ÷ 1,609.344 ≈ knots × 1.15078 — 1 kt = 1 nautical mile per hour = 1,852 m/h; 1 mph = 1,609.344 m/h.

Most asked values
Knots	Miles per hour
1 knot	1.15 mph
5 knots	5.75 mph
10 knots	11.51 mph
15 knots	17.26 mph
20 knots	23.02 mph
25 knots	28.77 mph
30 knots	34.52 mph
35 knots	40.28 mph
40 knots	46.03 mph
50 knots	57.54 mph

See Also

Miles per Hour to Kilometers per Hour - Convert Miles per Hour to Kilometers per Hour
Kilometers per Hour to Miles per Hour - Convert Kilometers per Hour to Miles per Hour
M/S to KM/H - Convert M/S to KM/H
KM/H to M/S - Convert KM/H to M/S
Knots to Km/h - Convert Knots to Km/h
Km/h to Knots - Convert Km/h to Knots
Miles per Hour to Meters per Second - Convert Miles per Hour to Meters per Second
Meters per Second to Miles per Hour - Convert Meters per Second to Miles per Hour
mph to Knots - Convert mph to Knots
Knots to m/s - Convert Knots to m/s
m/s to Knots - Convert m/s to Knots

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FAQ

How many miles per hour are in a knot?

1 knot ≈ 1.15078 mph: mph = knots × 1,852 ÷ 1,609.344 ≈ knots × 1.15078. For most inputs the division does not end, and the answer is rounded: 30 knots ≈ 34.52 mph; it comes out exact only for uncommon inputs such as 4.02336 knots = 4.63 mph.

Where do 1,852 and 1,609.344 come from?

A knot is one nautical mile per hour, and a mile per hour is one statute mile per hour. By the international definitions, 1 nautical mile = 1,852 m (1929) and 1 mile = 1,609.344 m (1959), so 1 knot = 1,852 m/h and 1 mph = 1,609.344 m/h.

Why is the number in mph bigger than in knots?

A nautical mile is longer than a statute mile: 1 nautical mile ≈ 1.15078 mi. So the same speed is a bigger number in mph: 10 knots ≈ 11.51 mph, and 1 mph ≈ 0.868976 knots.

Is a knot a distance?

No. A knot is a speed: one nautical mile per hour. The distance is the nautical mile.