# Speed Conversion

 Input Output km/h m/s meter/second meter/hour meter/minute kilometer/hour kilometer/minute kilometer/second centimeter/hour centimeter/minute centimeter/second millimeter/hour millimeter/minute millimeter/second foot/hour foot/minute foot/second yard/hour yard/minute yard/second mile/hour mile/minute mile/second knot knot (UK) Velocity of light in vacuum Cosmic velocity - first Cosmic velocity - second Cosmic velocity - third Earth's velocity Velocity of sound in pure water Velocity of sound in sea water (20°C) Mach (20°C, 1 atm) Mach (SI standard) meter/second meter/hour meter/minute kilometer/hour kilometer/minute kilometer/second centimeter/hour centimeter/minute centimeter/second millimeter/hour millimeter/minute millimeter/second foot/hour foot/minute foot/second yard/hour yard/minute yard/second mile/hour mile/minute mile/second knot knot (UK) Velocity of light in vacuum Cosmic velocity - first Cosmic velocity - second Cosmic velocity - third Earth's velocity Velocity of sound in pure water Velocity of sound in sea water (20°C) Mach (20°C, 1 atm) Mach (SI standard)

### Overview

In Physics Velocity/speed is defined as “rate at which object is covering a distance”.

Major difference between speed and velocity is

Speed is a scalar quantity as it does not have any direction. For example: Speed of a moving car without it’s direction.

On the other hand, velocity represents the rate of change in postion of a object. For example: If car is travelling from point A to point B and then returning back to point A. Overall change in postion is zero, hence the Velocity of the car is zero.

Velocity is a vector quantity i.e. velcoity always has a direction.

S.I Unit of Velocity/speed is meter/sec.

### How

Meter per second square to kilometer per hour

Ratio between Meter per second square and kilometer per hour is given below

1 m/s = 3.6 Km/hr

For example:

What is value of speed in km/hr, when car is moving at speed of 100 m/s?

Speed in km/hr = 3.6 * 100 (m/s) i.e. 360 km/hr

In the similar fashion kilometer per hour can be converted into Meter per second. Ratio between kilometer per hour and Meter per second is :

1 km/hr = 0.277777778 m/s

Square kilometer per hour to mile per hour

Ratio between km/hr and mile/hr is given below

1 km/hr = 0.6213711927193192 mile/hr

For example:

What is value of speed in mi/hr, when car is moving at speed of 100 km/hr?

Speed in mi/hr = 0.6213711927193192 * 100 (km/hr) i.e. 62.13711927193192 mi/hr