# Gallon (US) to Microliter Converter

## Gallon (US)

What is gallon?

The gallon is an important unit of volume. It is used in both the US customary units and the British imperial systems of measurement. An important thing to notice is that the size of gallon differs between different systems.

There are main 3 sizes of gallon:

- the imperial gallon defined as 4.54609 liters, used mainly in the United Kingdom and Canada.
- the US gallon defined as 231 cubic inches, used in the US and some Latin American.
- US dry gallon defined as 1/8 US bushel.

## Microliter

*What is liter?*

In the past, liter was defined as the volume of one kilogram of pure water at 4 °C. Nowadays, liter is an important unit of volume used in the metric system which is equal to one cubic decimeter.

In other words, a cubic with 10 cm sides, has a volume of one liter. “L” is the symbol of liter. Liter has a french origin as it was derived from the french unit “Litron”.

Liter is widely used, however, the cubic meter is the main SI unit of volume.

A microliter is one cubic millimeter. It is a unit of volume which equals to 1/1,000,000th of a liter (one-millionth).

The symbol for microliter is μl or μL.

1 μL = 10^{-6} L = 10^{-3} mL.