Unit Conversion: Know how to convert units in Maths and Physics by using appropriate formulas. Check table of conversion of units including different units of length, mass, temperature, etc.

A physical quantity is something that can be measured. For any measurement, the unit being used must be stated to give an understanding of the scale of the measurement. For example, distance can ...

There are seven base units of the SI: the second, metre, kilogram, ampere, kelvin, mole and candela. Some have long been based on physical constants. The metre, for example, has been defined since ...