Knots to Miles per Hour Converter
Type a value in knots to see it in miles per hour. It works both ways: type in the miles per hour box to convert back.
Formula
To convert knots to miles per hour, multiply by 1.150779448.
1 kn = 1.15077944802 mph and 1 mph = 0.868976241901 kn.
Knots to miles per hour table
| Knots | Miles per hour |
|---|---|
| 1 kn | 1.150779 mph |
| 5 kn | 5.753897 mph |
| 10 kn | 11.50779 mph |
| 15 kn | 17.26169 mph |
| 20 kn | 23.01559 mph |
| 25 kn | 28.76949 mph |
| 30 kn | 34.52338 mph |
| 40 kn | 46.03118 mph |
| 50 kn | 57.53897 mph |
| 100 kn | 115.0779 mph |
Worked examples
5 kn in miles per hour
5 kn
5.753897 mph
5 × 1.150779448 = 5.75389724
25 kn in miles per hour
25 kn
28.76949 mph
25 × 1.150779448 = 28.7694862
50 kn in miles per hour
50 kn
57.53897 mph
50 × 1.150779448 = 57.5389724
About Knots to Miles per Hour Converter
This converter turns knots into miles per hour as you type, and works the other way too: type in the miles per hour box to convert back. To convert knots to miles per hour, multiply by 1.150779448. For example, 5 kn is 5.753897 mph, and 25 kn is 28.76949 mph.
Speed limits in the UK are in miles per hour, most other countries use kilometres per hour, and sailors and pilots use knots, so travellers and drivers convert speeds often. Both units have exact definitions, so the converter gives an exact result, rounded only for display. Use the table below for common values, or set the decimal places to round the answer for a form or a label.
How to use Knots to Miles per Hour Converter
- Type the amount in knots in the first box.
- Read the answer in miles per hour in the second box and in the result line below.
- To convert the other way, type in the miles per hour box instead, or use the swap button to open the miles per hour to knots page.
- Choose a number of decimal places if you need a rounded figure, then copy the result line.
Common uses
- Driving abroad or in a hire car with a different speedometer
- Reading a wind speed forecast
- Comparing running, cycling or boat speeds
- Physics and engineering homework
Frequently asked questions
How many miles per hour are in one knot?
There are 1.150779448 miles per hour in one knot. This figure is exact, because both units have fixed definitions.
How do I convert knots to miles per hour?
To convert knots to miles per hour, multiply by 1.150779448. For example, 50 kn is 57.53897 mph.
How do I convert miles per hour to knots?
Going the other way, divide by 1.150779448 (the same as multiplying by 0.8689762419). The miles per hour to knots converter does this for you.
What is 30 kn in miles per hour?
30 kn is 34.52338 mph.
Why do ships and aircraft use knots?
A knot is one nautical mile per hour, and a nautical mile matches one minute of latitude. That makes distances on charts easy to work out, so knots became the standard at sea and in the air.