MPH to Knots Speed Converter

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MPH to Knots Knots to MPH

Type a value in the input field to convert:

Value

A MPH to Knots Speed Converter is a tool that converts speed measurements between Miles per Hour (mph) and Knots (kn or kt). This conversion is particularly useful for aviation, maritime navigation, and meteorology, where speeds are commonly measured in knots rather than mph or kph.

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Understanding MPH and Knots

• Miles per Hour (mph)

  • Used in the United States, UK, and other countries for road speed limits.

  • Measures how many miles an object travels in one hour.

• Knots (kn or kt)

  • Used in aviation, marine navigation, and meteorology.

  • Based on nautical miles (1 knot = 1 nautical mile per hour).

  • 1 nautical mile = 1.15078 statute miles (regular miles).

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Conversion Formula

The conversion between mph and knots is based on the relationship between statute miles and nautical miles:

MPH to Knots

$$\text{Knots}=\text{MPH}\times 0.868976$$

(1 mph ≈ 0.868976 knots)

Knots to MPH

$$\text{MPH}=\text{Knots}\times 1.15078$$

(1 knot ≈ 1.15078 mph)

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How to Convert MPH to Knots (and Vice Versa)

Manual Calculation

• Example 1: Convert 60 mph to knots

  $$60\times 0.868976=52.1386\text{ knots}$$

• Example 2: Convert 30 knots to mph

  $$30\times 1.15078=34.5234\text{ mph}$$

Common Speed Conversions

MPH	Knots (Approx.)	Common Usage
10	8.69	Light wind speed
30	26.07	Small boat cruising
60	52.14	Highway speed (equivalent in knots)
100	86.90	Fast yacht speed
150	130.35	Small aircraft speed

Knots	MPH (Approx.)	Common Usage
5	5.75	Light breeze
15	17.26	Moderate sailing speed
30	34.52	Commercial ship speed
50	57.54	Small aircraft cruising
100	115.08	Jet aircraft speed

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Why Use an MPH to Knots Converter?

• Aviation & Marine Navigation: Pilots and sailors need accurate speed readings in knots.

• Weather Forecasting: Wind speeds are often reported in knots.

• Sports & Recreation: Sailors, windsurfers, and pilots use knots for speed tracking.

• International Travel: Helps understand speed limits in different units.

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Quick Reference Conversion Table

MPH	Knots
5	4.34
10	8.69
20	17.38
30	26.07
40	34.76
50	43.45
60	52.14
70	60.83
80	69.52
90	78.21
100	86.90

Knots	MPH
5	5.75
10	11.51
20	23.02
30	34.52
40	46.03
50	57.54
60	69.05
70	80.55
80	92.06
90	103.57
100	115.08