TinySandyFree Online Tools

Volume Converter

Convert a volume or liquid capacity between metric units (mL, cm³, L, m³), US customary units (teaspoon to gallon and the 42-gallon oil barrel), imperial UK units (fluid ounce to gallon) and cubic measures (in³, ft³, yd³). US and imperial units are listed separately because gallons, quarts, pints and fluid ounces are different sizes in the two systems.

Unit Converters Runs in your browser

Convert a Volume

US and UK (imperial) units share names but differ in size: a US gallon is 3.785411784 L and a UK gallon is 4.54609 L. Negative volumes are rejected.

Decimals and scientific notation such as 1.5e3 are accepted.
Automatic shows exact results in full and rounds long ones to 12 significant digits. A value too small for the chosen decimal places is shown with 3 significant digits instead of 0.

How to Use the Volume

  1. Type the value you want to convert in Value to convert.
  2. Pick the starting volume unit in From unit and the one you want in To unit. The lists are grouped by measurement system.
  3. Read the result and the formula directly under the form; it updates as you type. Use Swap units to reverse the direction.
  4. Scroll to the table to see the same value in every available unit, change Precision if you need fewer digits, or press Copy result.

About This Tool

Drivers and fuel buyers comparing US and UK gallons, people using recipes or cocktail guides from another country, engineers sizing tanks and pipes, and anyone converting aquarium, pool or shipping volumes.

Input: A number and a unit  ·  Output: The same volume in every unit.

Features and Limitations

Features

  • Exact: 1 US gal = 3.785411784 L, 1 UK gal = 4.54609 L, 1 in³ = 16.387064 mL, 1 ft³ = 28.316846592 L.
  • US customary and imperial UK units sit in separate groups, with labels that say which is which.
  • Handles tiny and huge volumes (mL up to m³) and switches to scientific notation when needed.
  • A formula, an equivalence line and a table of the volume in every unit.

Limitations

  • Dry measures (bushels, dry pints and quarts) are not included; the pint and quart here are liquid measures.
  • A negative volume is not meaningful and is rejected.
  • Results are computed in your browser; nothing you enter is sent to a server.

Example

1 US gal = 3.785411784 L. 1 UK gal = 4.54609 L = 1.2009 US gal. 2 L = 4.2268 US pints. 500 mL = 16.907 US fl oz. 1 m³ = 1000 L = 264.172 US gal. 1 UK pint = 568.26125 mL, about 20 % more than a US pint (473.176473 mL).

Frequently Asked Questions

What is the difference between a US gallon and a UK gallon?

A US gallon is 231 cubic inches or exactly 3.785411784 L. A UK (imperial) gallon is exactly 4.54609 L, about 20 % bigger. A UK gallon holds 1.2009 US gallons.

Is a US fluid ounce the same as a UK fluid ounce?

No. A US fluid ounce is 29.5735 mL, while an imperial fluid ounce is 28.4131 mL. The difference is small (about 4 %) but adds up for large quantities, and a US pint has 16 fl oz while a UK pint has 20.

Is 1 cm³ the same as 1 mL?

Yes. A milliliter is defined as exactly one cubic centimeter, so 1 L = 1000 cm³ = 0.001 m³. This is why “cc” and “mL” are used interchangeably for engines and medicines.

How many liters are in a cubic meter?

Exactly 1000. A cubic meter is a cube 1 m on each side, which holds 1000 liters, or about 264.17 US gallons.

Related Tools

More like this: all Unit Converters tools, all Converters tools or the TinySandy home page.