Find a tool

Speed Converter Runs in your browser. No input data is sent to our server.

Convert kilometers per hour, miles per hour, meters per second, knots, and feet per second instantly. Enter a value, choose your units, and get an accurate result for driving speeds, aviation, weather data, and physics problems.

All converters
Live result Kilometer per hour to Mile per hour

Converted value

Enter a valid number to calculate a conversion.

Change the value or swap the units above to compare measurements instantly.

This speed converter updates in your browser, so you can compare values quickly for planning, homework, technical checks, and everyday reference work.

About this Speed converter

Convert kilometers per hour, miles per hour, meters per second, knots, and feet per second instantly. Enter a value, choose your units, and get an accurate result for driving speeds, aviation, weather data, and physics problems.

How to use this speed converter

1

Enter the number you want to convert.

2

Choose the source unit and target unit from the dropdowns.

3

Review the live result or open a preset example to jump into a common conversion.

When to use this converter

You are driving in a country where road speed limits are posted in a different unit than your car's speedometer and want to understand the equivalent before setting cruise control.

A weather report or forecast gives wind speed in knots or meters per second and you want to understand it in kilometers per hour or miles per hour.

You are working on a physics or engineering problem that requires speed in meters per second but the input data is given in kilometers per hour or miles per hour.

A flight or marine tracking tool displays speed in knots and you want to cross-reference it against a value in kilometers per hour or miles per hour.

Common problems and fixes

The MPH to KM/h result looks higher than expected.

Kilometers per hour are smaller units than miles per hour — one mile per hour equals approximately 1.609 km/h. So 60 mph converts to roughly 96.6 km/h, which is correct.

I need the speed of sound or Mach number.

Mach units are not included. The speed of sound at sea level is approximately 343 m/s, 1235 km/h, or 767 mph. Use those values as reference points if you need to relate a Mach number to one of the available units.

Knots and nautical miles per hour are confusing me.

One knot equals exactly one nautical mile per hour. Nautical miles and knots are the same speed unit expressed differently — they are interchangeable.

Available units

Meter per second

m/s

Kilometer per hour

km/h

Mile per hour

mph

Knot

kn

Foot per second

ft/s

Related unit converter pages

Length Converter Weight Converter Temperature Converter Volume Converter

Frequently asked questions

How do I convert km/h to mph?

Select kilometers per hour as the source and miles per hour as the target. One kilometer per hour equals approximately 0.621 miles per hour.

How many km/h is 60 mph?

60 miles per hour equals approximately 96.6 kilometers per hour.

What is a knot in km/h?

One knot equals approximately 1.852 kilometers per hour.

How do I convert meters per second to km/h?

Select meters per second as the source and km/h as the target. One meter per second equals 3.6 km/h.

Is this speed converter free to use?

Yes. It is free and works directly in your browser with no account required.

What speed units does this converter support?

Meters per second, kilometers per hour, miles per hour, knots, and feet per second.