Unit Conversion Tool
Speed Converter
Convert between miles per hour (mph), kilometers per hour (km/h), meters per second, knots, and other speed units instantly.
Convert Speed Units
Enter a value and select the unit to convert
MPH to KM/H Conversion Table
| Miles per hour (mph) | Kilometers per hour (km/h) |
|---|---|
| 10 | 16.09 |
| 20 | 32.19 |
| 30 | 48.28 |
| 40 | 64.37 |
| 50 | 80.47 |
| 60 | 96.56 |
| 70 | 112.65 |
| 80 | 128.75 |
| 90 | 144.84 |
| 100 | 160.93 |
KM/H to MPH Conversion Table
| Kilometers per hour (km/h) | Miles per hour (mph) |
|---|---|
| 10 | 6.21 |
| 20 | 12.43 |
| 30 | 18.64 |
| 40 | 24.85 |
| 50 | 31.07 |
| 60 | 37.28 |
| 70 | 43.50 |
| 80 | 49.71 |
| 90 | 55.92 |
| 100 | 62.14 |
| 110 | 68.35 |
| 120 | 74.56 |
Understanding Speed Units
Miles per hour (mph) is primarily used in the United States and United Kingdom for road speeds and vehicle speedometers.
Kilometers per hour (km/h) is the most widely used unit globally, standard in most countries for road traffic and general speed measurements.
Meters per second (m/s) is the SI unit of speed, commonly used in physics and scientific contexts.
Knots are used primarily in maritime and aviation contexts. One knot equals one nautical mile per hour.
Conversion Formulas
Related Calculators
Explore other speed and pace calculation tools
Speed Calculator
Calculate speed, distance, or time using the fundamental formula v = d / t
Average Speed Calculator
Calculate average speed for trips and multi-segment journeys
MPH to KM/H Converter
Convert miles per hour to kilometers per hour and vice versa
KM/H to MPH Converter
Convert kilometers per hour to miles per hour, with a reference page for every common speed
Feet Per Second Calculator
Convert fps to mph, km/h, and m/s for physics and ballistics
Running Pace Calculator
Advanced running metrics with splits, race predictions, and training zones
Walking Speed Calculator
Calculate walking pace, calories burned, and step count
Car Speed Calculator
Calculate travel time, distance, and fuel costs for road trips
Speed of Light Calculator
Calculate light speed in different mediums with formulas and history
Wave Speed Calculator
Calculate wave speed, frequency, and wavelength for sound, water, EM, and seismic waves