Speed Converter

How to Use the Speed Converter

1. Enter the speed value you want to convert.
2. Select the original unit from the Convert from menu.
3. Select the target unit from the Convert to menu.
4. Click Convert Speed to see the result.
5. Click Reset to clear the value and restore the default units.

Speed Conversion Formulas

The calculator converts the entered value to meters per second first, then converts that value into your selected destination unit.

Common Speed Conversions

• 10 km/h ≈ 6.2137 mph
• 20 km/h ≈ 12.4274 mph
• 50 km/h ≈ 31.0686 mph
• 60 km/h ≈ 37.2823 mph
• 80 km/h ≈ 49.7097 mph
• 100 km/h ≈ 62.1371 mph
• 1 m/s = 3.6 km/h
• 1 knot = 1.852 km/h

Understanding Different Speed Units

Kilometers per hour (km/h)

Kilometers per hour is widely used for road speeds in many countries. It describes the number of kilometers traveled in one hour at a constant speed.

Miles per hour (mph)

Miles per hour is used for road speeds in the United States and the United Kingdom.

Meters per second (m/s)

Meters per second is an SI unit commonly used in science, physics, engineering and motion calculations.

Knots

Knots are commonly used in aviation and maritime navigation. One knot equals one nautical mile per hour, or exactly 1.852 kilometers per hour.

Feet per second (ft/s)

Feet per second measures how many feet are traveled in one second and is used in some engineering and physics applications.

Mach

Mach expresses speed relative to the local speed of sound. Since the speed of sound changes with atmospheric conditions, this calculator uses 343 m/s as a reference approximation. It is not intended for precise aviation or scientific calculations.

Frequently Asked Questions