ConverterKey
HomeAll ConvertersText ToolsLengthTemperatureData
Explore
HomeAll ConvertersText ToolsLengthTemperatureData

ConverterKey

A modern converter toolkit built for speed, precision, and mobile use.

Popular converters

  • Length Converter
  • CM to Inches Converter
  • Feet to Meters Converter
  • Miles to Kilometers Converter
  • Area Converter

Platform

  • About
  • Contact
  • All converters
  • Search tools
  • Browse categories
  • Sitemap

Legal

  • Privacy Policy
  • Terms of Use

© 2026 ConverterKey. Validate critical calculations independently.

  1. Home
  2. /
  3. Converters
  4. /
  5. Speed Converter
  6. /
  7. Convert mph to knot

Convert mph to knot

Convert Mile per hour (mph) to Knot (kn) instantly.

Calculation

value × 0.868976241976

Quick ConversionConverted
1 mph0.868976 kn
5 mph4.344881 kn
10 mph8.689762 kn
100 mph86.897624 kn
1,000 mph868.976242 kn

Mile per hour

Miles per hour measures how many miles are traveled in one hour.

Miles per hour is used for road speeds in the United States and the United Kingdom, plus many vehicle, sport, and weather references.

mph is used for road signs, vehicle dashboards, weather reports, aviation references, sports speeds, and travel estimates in mph-based regions.

Knot

A knot is a speed of one nautical mile per hour.

Knots are used in maritime navigation, aviation, weather reporting, sailing, and ocean-current measurement.

knot is used for boats, aircraft, wind forecasts, marine navigation, sailing, currents, and nautical-speed references.

How to Convert Mile per hour to Knot

Mathematically, knot (kn) = mile per hour (mph) converted with the formula below.

1 mph = 0.868976 kn

1 kn = 1.150779 mph

Formula: value × 0.868976241976

Example: 15 mph = 13.034644 kn

  1. Start with the speed in miles per hour (mph).
  2. Multiply by 0.868976241901 to convert miles per hour into knots.
  3. Use knots when the speed belongs to marine navigation, aviation, wind forecasts, or nautical-distance work.

Precision note: Use 0.868976241901 knots per mile per hour. Round according to the conventions used by the forecast, chart, or instrument.

How many mph in kn and kn in mph

1 mph = 0.868976 kn

1 kn = 1.150779 mph

Mile per hour [mph]Knot [kn]
0.01 mph0.00869 kn
0.1 mph0.086898 kn
1 mph0.868976 kn
2 mph1.737952 kn
5 mph4.344881 kn
10 mph8.689762 kn
20 mph17.379525 kn
50 mph43.448812 kn
100 mph86.897624 kn

Common Use Cases for mph to kn

  • Converting wind speeds from mph to knots for aviation or marine use.
  • Comparing vehicle or land-speed values with nautical speed references.
  • Preparing sailing, boating, or flight notes from mph source values.
  • Checking weather reports that need both mph and knots for different audiences.

FAQ

How many knots are in one mile per hour?

One mile per hour is about 0.868976241901 knots.

What does one knot mean?

One knot is one nautical mile per hour.

When should I use knots instead of mph?

Use knots for aviation, marine navigation, sailing, nautical weather, and ocean-current contexts.

More Mile per hour conversions

  • mph to mps
  • mph to kph
  • mph to fps