Liquid Measurement
The liquid measurement is the amount of liquid a vessel contains and its measurement in standard units. We also refer to it as the “capacity” or the “volume” of the vessel.
Infant milk bottle with measurement markings in milliliter and juice bottle with 1 liter contents.
The different tools used for liquid measurement are:
Measuring pitcher, cups and spoons with measurement markings in metric and US customary units on the surface.
Conical flatbottom flask, beaker and graduated cylinder; liquid measurement equipments used in laboratory markings.
International System / Metric Units 
U.S. Customary Units 
U.K. Imperial Units 
Milliliter – ml Centiliter – cl Liter – l Kiloliter – kl 
Fluid ounce – fl. oz. Cup Pint Quart Liquid Gallon 
Fluid ounce – fl. oz. Cup Pint Quart Liquid Gallon 
To convert the mentioned unit to different units, follow the given conversion steps.
Metric unit conversion for different measurements.
Milliliter  Centiliter  Liter  Kiloliter  
5 Liter  Multiply by 1000 = 5 × 1000 = 5000 ml 
Multiply by 100 = 5 × 100 = 500 cl

Given in the same unit 5 l 
Divide by 1000 = 5 ÷ 1000 = 0.005 kl 
400 Milliliter  Given in the same unit 400ml 
Divide by 10 = 400 ÷ 10 = 40 cl 
Divide by 1000 = 400 ÷ 1000 = 0.4 l 
Divide the value in liter by 1000 = 0.4 ÷ 1000 = 0.0004 kl 
We follow the given chart for U.S. customary unit conversions
customary unit conversion for different measurements.
An example of using the above chart for unit conversion is:
U.S. Customary  Cup  Pint  Quart  Gallon 
2000 fl. oz  Divide by 8 = 2000 ÷ 8 = 250 c 
Divide the “cup” by 2 = 250 ÷ 2 = 125 pt 
Divide the “pint” by 2 = 125 ÷ 2 = 62.5 qt

Divide the “quart” by 4 = 62.5 ÷ 4 = 15.62 gal 
We follow the given chart for U.K. Imperial unit conversions
Imperial unit conversion for different measurements.
Using the above chart, the conversion of a given capacity in different units is illustrated as follows:
UK Imperial Units 
Fluid Ounce 
Pint  Quart  Gallon 
40 cups  Multiply by 10 = 40 × 10 = 400 fl oz. 
Divide by 2 = 20 ÷ 2 = 10 qt 
Divide the “pint” by 2 = 20 ÷ 2 = 10 qt 
Divide the “quart” by 4 = 10 ÷ 4 = 2.25 gal 
The liquid measurement units are commercially used for the trade purpose of commodities such as petrol, water, oil, and others. Standardization of measurement units introduced uniformity for global interpretation of mass and volume of liquids.
Fun Facts

Fluids
Weight of liquids
Imperial Metrics
SI Metrics
Unit conversion for liquid measurement