Calcs4All

APR 23 · 2026

Volume converter

Convert metric, U.S. customary, and imperial volume units with exact factors.

What this calculator covers

Use this volume converter when you need to move between metric containers, U.S. customary kitchen measures, and imperial gallon-based units.

The calculator uses liters as the shared base unit, which makes the exact relationship between each supported volume measure easy to inspect.

Frequently asked questions

What is the difference between a US gallon and an imperial gallon?
A US gallon is approximately 3.785 liters, while an imperial gallon used in the UK and some Commonwealth countries is approximately 4.546 liters — about 20% larger. Selecting the wrong gallon type produces a noticeably different result, so confirm which system applies before converting.
How does the converter handle US customary kitchen measures?
US cups, pints, quarts, and fluid ounces are all defined relative to the US gallon. The converter uses exact liter-equivalent factors for each, so a US cup is approximately 0.2366 liters and a US fluid ounce is approximately 0.02957 liters.
Can I convert between cubic centimeters and milliliters?
Yes — 1 cubic centimeter equals exactly 1 milliliter by definition, so converting between them always gives a 1:1 result. Both units are supported so you can confirm this or use whichever label your context requires.
Are the conversion factors exact?
The metric relationships (liters, milliliters, cubic meters, cubic centimeters) are exact by definition. The US customary and imperial factors are the standard defined values and are exact within the converter's precision.

Tool

Run the calculation

RESULT · CONVERTED VOLUME

â„–126

Primary result

11.356235 L

3 US gal converts to 11.356235 L using liters as the shared base unit.

Input
3 US gal (US gallons)
liters value
11.356235 L
Converted value
11.356235 L (Liters)
Exact factor
3.785411784 L per US gal

Step-by-step solution

  1. 1.Start with 3 US gal in US gallons.
  2. 2.Normalize it to liters: 3 x 3.785411784 = 11.356235 L.
  3. 3.Convert the liters value into Liters: 11.356235 = 11.356235 L.

Walkthrough

Visual walkthrough

volume conversions normalize the source value into one shared base unit before expressing that same quantity in the target unit.

  1. 01

    Read the source volume

    The calculator starts from 3 US gal in US gallons.

    3 US gal

  2. 02

    Normalize to liters

    3 x 3.785411784 = 11.356235 L

    Using liters as the common base keeps every supported volume on one exact path.

  3. 03

    Express the result in Liters

    11.356235 = 11.356235 L

    Re-expressing the base-unit value yields the requested Liters result.

    11.356235 L