Volume Converter
Convert between metric and US customary volume units — milliliters, liters, cubic meters, cubic feet, cubic inches, US fluid ounces, cups, pints, quarts, and gallons.
Results from this calculator are estimates provided for general informational purposes only, based on formulas, rates, and standards commonly accepted as of 2026. Figures may differ slightly from other calculators or professional sources due to rounding methods, differing assumptions, or regional regulations, and rules may change over time. Always consult a qualified professional — such as a financial advisor, healthcare provider, or other relevant specialist — before making decisions based on these results.
Result
2 L = 0.5283441 gal
1 Liter = 0.26417205 Gallons (US)
1 Gallon (US) = 3.7854118 Liters
2 L in every supported unit
What is a Volume Converter?
A volume converter translates a quantity of space measured in one unit into its equivalent in another — for example, turning liters into gallons, or cups into milliliters. Volume shows up everywhere from cooking recipes and beverage packaging to fuel tanks and shipping containers, and because the metric system (used almost everywhere) and the US customary system (used in the United States) define their units completely differently, converting between them accurately requires exact multipliers rather than rough estimates.
Every unit below is defined relative to the liter, the base metric unit of volume, so any conversion — metric to metric, US customary to US customary, or across systems — reduces to a single multiplication.
Conversion chart: Liter to Gallons (US)
Conversion table
| Liter (L) | Gallon (US) (gal) |
|---|---|
| 0.01 L | 0.0026417205 gal |
| 0.1 L | 0.026417205 gal |
| 1 L | 0.26417205 gal |
| 2 L | 0.5283441 gal |
| 3 L | 0.79251616 gal |
| 5 L | 1.3208603 gal |
| 10 L | 2.6417205 gal |
| 20 L | 5.283441 gal |
| 50 L | 13.208603 gal |
| 100 L | 26.417205 gal |
| 1000 L | 264.17205 gal |
Supported Units
| Unit | Symbol | In Liters |
|---|---|---|
| Milliliter | mL | 0.001 L |
| Liter | L | 1 L |
| Cubic Meter | m³ | 1000 L |
| Cubic Foot | ft³ | 28.316847 L |
| Cubic Inch | in³ | 0.016387064 L |
| Fluid Ounce (US) | fl oz | 0.02957353 L |
| Cup (US) | cup | 0.23658824 L |
| Pint (US) | pt | 0.47317647 L |
| Quart (US) | qt | 0.94635295 L |
| Gallon (US) | gal | 3.7854118 L |
About These Parameters
- Value
- The number you want to convert, expressed in the "From" unit. Accepts decimals.
- From Unit
- The unit your input value is currently measured in.
- To Unit
- The unit you want the result converted into. Use the swap button to flip From and To instantly.
How Volume Conversion Works
The Formula
Every unit here is defined by a fixed multiplier relative to the liter. To convert a value from one unit to another:
result = value × (factor of "From" unit ÷ factor of "To" unit)
For Liter → Gallon (US): multiply by 0.26417205. For example, 2 L × 0.26417205 = 0.5283441 gal.
US Gallons vs. UK Imperial Gallons
This converter uses US customary volume units exclusively (fluid ounce, cup, pint, quart, gallon), which are not the same size as their UK imperial counterparts. A US gallon is exactly 3.785411784 liters, while a UK imperial gallon is about 4.546 liters — roughly 20% larger. Both systems trace back to old English measures, but the US kept the older wine-gallon standard after 1776 while Britain redefined its units in 1824. This mismatch is a common source of confusion when comparing fuel economy or recipe measurements between the US and UK.
Metric vs. US Customary Volume
The metric units on this page (milliliter, liter, cubic meter) all scale by powers of ten, so converting between them is just moving a decimal point. US customary units (fluid ounce, cup, pint, quart, gallon) use irregular multiples — 8 fluid ounces to a cup, 2 cups to a pint, 2 pints to a quart, 4 quarts to a gallon — inherited from centuries-old English liquid-measure tradition rather than a decimal system.
Volume in the Kitchen
Cups, pints, and quarts are primarily cooking and baking units in the United States — most other countries measure recipe ingredients by weight (grams) instead, which is more precise because ingredients like flour can pack differently depending on how they're scooped. When following a recipe written in cups or fluid ounces, converting to milliliters first can help if you're using a metric kitchen scale or measuring jug.
Example
2 L equals 0.5283441 gal. For scale, that's about 2× a standard 1-liter water bottle (1 L, or 1 L).
Frequently Asked Questions
Why is a US gallon smaller than a UK gallon?
The US kept the older English wine gallon (231 cubic inches, about 3.785 L) after independence, while the UK redefined its gallon in 1824 based on the volume of 10 pounds of water (about 4.546 L) — the two countries never reconciled the difference, so today "gallon" means two different volumes depending on where you are.
How many milliliters are in a US cup?
One US cup equals exactly 236.5882365 milliliters, though many recipes and kitchen tools round this to 240 mL for simplicity.
Is a cubic centimeter the same as a milliliter?
Yes — one cubic centimeter (cm³ or cc) is exactly equal to one milliliter by definition, which is why medical dosing is often labeled in either unit interchangeably.