Volume Conversion

Volume conversion to convert common volume units including gallons, quarts, pints, cups, ounces, liters and mL. Input a value in one of the fields below to instantly view the converted volume in the remaining fields.

Round:
US Fluid Ounce
US Cup
US Fluid Pint
US Fluid Quart
US Fluid Gallon
Cubic Feet
Milliliter
Liter
Cubic Centimeter
Cubic Meter

If you want to convert between all volume units, explore our comprehensive all volume units converter. It provides a wide range of volume units, allowing you to effortlessly convert between them with ease and accuracy.

If you require conversions between US Customary and Metric volume units without relying on a converter, you will need access to the appropriate conversion factors since they can be very difficult to remember. To obtain the necessary conversion factors, you can refer to the links provided at the end of this page. These links will direct you to reliable resources containing conversion factors, dedicated converters, conversion tables, and comprehensive instructions on how to perform the conversions accurately.

Below, you will find information about Metric volume units and US Customary volume units, along with guidance on how to convert within each system.

United States Customary Volume Units:

US Customary volume units are used in the United States to quantify volume. They are primarily used in everyday life, commerce and industry within the country. Some of the common US Customary volume units include fluid ounce (fl oz), cup, pint, quart and gallon.

US Customary volume units are different from imperial volume units. The main difference between the two systems lies in the conversion factors used. The imperial system is primarily used in the United Kingdom and some other countries, while the US Customary system is used in the United States.

To convert between US Customary volume units, you can follow these steps:

1. Identify the starting volume unit and the target unit for conversion.

2. Find the conversion factor between the two units. Conversion factors for common US Customary volume units are as follows:

  • 1 gallon (gal) = 4 quarts (qt)
  • 1 quart (qt) = 2 pints (pt)
  • 1 pint (pt) = 2 cups (c)
  • 1 cup (c) = 8 fluid ounces (fl oz)
  • 1 fluid ounce (fl oz) = 29.5735 milliliters (ml)

3. Multiply the value in the starting unit by the conversion factor to obtain the equivalent value in the target unit.

For example, let's say you want to convert 3 gallons to quarts:

3 gallons x 4 quarts/gallon = 12 quarts

Therefore, 3 gallons is equal to 12 quarts.

Similarly, you can apply the appropriate conversion factor to convert between other US Customary volume units.

Metric Volume Units:

In the Metric system, prefixes are used to represent different orders of magnitude for a base unit. These prefixes indicate multiples or submultiples of the base unit, making it easier to work with measurements that are either very large or very small. Here are some common Metric prefixes and their symbols:

  • Kilo (k): 1 kilo is equal to 1000 units of the base unit
  • Hecto (h): 1 hecto is equal to 100 units of the base unit
  • Deka (da): 1 deka is equal to 10 units of the base unit
  • Deci (d): 1 deci is equal to 0.1 (1/10) of the base unit
  • Centi (c): 1 centi is equal to 0.01 (1/100) of the base unit
  • Milli (m): 1 milli is equal to 0.001 (1/1000) of the base unit

The standard unit of volume in the Metric system is the liter (L).

For example, to convert 500 milliliters to liters, divide the volume by 1000 since there are 1000 milliliters in a liter:

500 mL ÷ 1000 = 0.5 L

Therefore, 500 milliliters is equal to 0.5 Liter

Using these prefixes, you can easily convert volumes between different Metric units, making the Metric system a convenient and versatile system for expressing volumes in various contexts.