 # Metric System

Metric System is basically a system used for measuring distance, length, volume, weight and temperature. It is based on three basic units with which we can measure almost everything in the world

1. M- meter, used to measure length
2. Kg- kilogram, used to measure mass
3. S- second, used to measure time

The metric system was originated in the year 1799. Over the years, this system has been extended to incorporate many units. Although a number of variants of this system discovered in the late 19th and early 20th centuries, the term – metric system is used as another word for SI or the International System of Units.

## SI Units Metric System

The SI Units (standard International System of Units) gives proper definitions for meter, kilogram and the second. It also specifies and defines 4 different additional units :

Kelvin- temperature

Ampere – Electric Current

Candela- luminous Intensity

Mole-Material Quantity

Metric Number Prefixes

Whether you want to measure very small or very big things, You can go for metric number prefixes. For example- kilo and milli. There are some common units that are based on the kilogram, meter and second.

1. Area = Square Meter (Area= length by length) Therefore the basic unit of area is meters by meters = m2 (square meters).
1. Volume=Cubic Meter (Volume=length by length)Therefore, the basic unit of volume = m3 (cubic meters).
1. Liter = one-thousandth of a cubic meter(1 m3 = 1,000 Liters) Therefore,1 Liter = 1/1000 m3
1. Time = Hour (1 hour=60 minutes, 1 minutes=60 seconds) Therefore,1hour= 60×60= 3600 seconds
1. Day = (1 day= 24 hours) Therefore, 1 day= 24x60x60=86400 seconds

Important Things to Remember ### Metric System Conversion

You can follow the below-given methods for converting from Metric Units to Metric Units (Length) 