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Volume Converter

Convert volume between litres, millilitres, cubic metres, US and imperial gallons, quarts, pints, cups and fluid ounces.

How it works Report a problem

Volume Converter

Legendary capacity mapping with fluid dynamics.

CONVERTED CAPACITY
0.00
Unit Name

Multi-Unit Breakdown

About the Volume Converter

Convert volume between litres, millilitres, cubic metres, US and imperial gallons, quarts, pints, cups and fluid ounces.

How to use the Volume Converter

  1. Enter the Value and choose the Unit.
  2. Press Convert to see the volume in every unit.

Formula and method

Values are converted through litres, for example litres = US gallons × 3.78541.

Common volume conversions
Unit Equals
1 litre 0.264172 US gal
1 US gallon 3.78541 L
1 imperial gallon 4.54609 L
1 US cup 236.588 mL
1 US fl oz 29.5735 mL
1 m³ 1,000 L

Worked example

A 12-gallon fuel tank holds 12 × 3.78541 = 45.4 litres.

Liquid measures. 1 US gallon = 3.785 L, so a 12 gallon tank holds about 45.4 L. 1 US cup ≈ 236.6 mL.

When to use the Volume Converter

  • Converting cooking measures such as cups, millilitres and fluid ounces.
  • Converting fuel, tank and container sizes.
  • Working with international recipes and product labels.

Common mistakes to avoid

  • Using US cups for a recipe written with metric cups, which are slightly different.
  • Assuming a UK pint equals a US pint. A UK pint is about 568 mL and a US pint is about 473 mL.

Tips

  • A US gallon is about 17 percent smaller than an imperial gallon.
  • For cooking, remember that a US cup is not the same as a metric cup (250 mL).

Frequently asked questions

How many millilitres are in a litre?
1,000 millilitres.
How many millilitres are in a tablespoon?
About 15 mL for a US tablespoon.
What is the difference between fluid ounces and ounces?
Fluid ounces measure volume, and ounces measure weight.