Volume Converter

Convert between common units of volume with instant results.

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How to Use the Volume Converter

Enter a value, select the unit you're converting from, and choose your target unit. The default converts 1 liter to 0.264172 gallons. If a European recipe calls for 500 mL of milk and your measuring cup is in cups, enter 500 milliliters to get 2.11 cups. Homebrewers can convert 5 gallons to 18.93 liters. Mechanics check engine displacement: a 2.0 L engine equals 122 cubic inches. The converter handles liters, milliliters, gallons, quarts, pints, cups, tablespoons, teaspoons, cubic meters, and cubic feet.

About Volume Converter

A volume converter is a practical tool for converting between the many units used to measure liquid and dry capacity across different measurement systems. This converter supports liters, milliliters, gallons (US), quarts, pints, cups, tablespoons, teaspoons, cubic meters, and cubic feet. Cooking and baking across international recipes is a primary use case, converting between metric milliliters and US customary cups and tablespoons. Homebrewers and winemakers often need to convert between gallons and liters when following recipes from different countries. Aquarists calculate tank volumes in gallons or liters for water treatment dosing. Shipping and logistics professionals convert between cubic meters and cubic feet to determine cargo space utilization. Mechanics measure engine displacement in liters or cubic inches. The US customary system (gallons, quarts, pints, cups) differs from the imperial system used in the UK, and this converter uses US standard values. Scientists use cubic meters for large volumes and milliliters for small precise measurements. Instead of memorizing that 1 US gallon = 3.78541 liters or 1 cup = 236.588 milliliters, let this converter handle the math instantly and accurately.

When to Use This Volume Converter

Use this volume converter whenever you need to convert measurements between different unit systems. Cooks and bakers use it when following recipes from different countries that use metric cups versus imperial fluid ounces. DIYers convert between gallons and liters for paint, fuel, and other liquid materials. Scientists convert between milliliters, liters, and cubic meters for laboratory measurements. Fuel economy comparisons require converting between gallons and liters for accurate cross-border vehicle efficiency calculations. Understanding how to convert between units is also valuable when reading international recipes, comparing product specifications from different countries, interpreting weather reports that use Celsius versus Fahrenheit, or calculating distances for travel planning in countries that use the metric system. Having a reliable conversion tool saves time and prevents the costly errors that can result from manual calculation mistakes.

How to Interpret Your Results

Cooking across systems: A US cup is 236.588 mL, while a UK cup is 284.131 mL — not the same! Most recipes assume US standard measures unless specified. A tablespoon equals 14.787 mL (US) or 15 mL (metric). A teaspoon equals 4.929 mL. Converting between these is essential when following international recipes. A recipe calling for 1 cup of flour should use 236.6 mL regardless of country.

Automotive and mechanical: Engine displacement is measured in liters or cubic inches. A 5.7 L V8 equals 348 cubic inches. Oil capacity is listed in quarts (US) or liters. A typical car needs 5 quarts or 4.73 liters of oil. Antifreeze and washer fluid are also commonly sold in gallons and liters, making conversion necessary for DIY maintenance.

Aquariums and pools: A 55-gallon aquarium holds 208.2 liters of water. Knowing the volume helps with dosing water treatments and choosing the right filter. Above-ground pools: a 15 ft diameter by 4 ft deep pool contains roughly 5,300 gallons or 20,063 liters. Chemical treatments are dosed per gallon or per liter, requiring accurate conversion for safe water chemistry.

Frequently Asked Questions

Is a US gallon the same as a UK gallon?

No — a US gallon equals 3.785 liters, while a UK (imperial) gallon equals 4.546 liters. The UK gallon is about 20% larger. This converter uses US gallons, which is the standard in the United States and many other countries that follow US measurement conventions. If you're following a UK recipe or working with British fuel economy figures, be aware that UK gallons are significantly bigger. A car getting 30 MPG in the UK is about 25 MPG in US gallons.

How do I convert between liters and gallons?

To convert liters to US gallons, divide by 3.78541. To convert US gallons to liters, multiply by 3.78541. For example, a 2-liter bottle equals 0.528 gallons, and a 5-gallon water jug equals 18.93 liters. For UK (imperial) gallons, use 4.54609 instead. This converter uses US gallons, which are the standard in North America.

How do I convert fluid ounces between US and UK?

A US fluid ounce is 29.5735 mL while a UK fluid ounce is 28.4131 mL. The US fluid ounce is about 4% larger. There are 128 US fluid ounces in a US gallon and 160 UK fluid ounces in a UK gallon. This means that a US cup (8 fl oz) is 236.6 mL while a UK cup is 227.3 mL — an important distinction for baking and cooking conversions between American and British recipes.

How many milliliters are in a cup?

One US cup equals 236.588 milliliters. In cooking, this is often rounded to 240 mL. A UK cup is 284.131 mL. A metric cup (used in Australia and New Zealand) is exactly 250 mL. This converter uses US cups. Recipes from different countries may use different cup sizes, so when baking, it's important to know which cup standard the recipe uses.

How do I convert cubic meters to liters?

One cubic meter equals 1,000 liters. To convert cubic meters to liters, multiply by 1,000. To convert liters to cubic meters, divide by 1,000. For example, a 50 cubic meter swimming pool holds 50,000 liters of water. A standard shipping container (20 ft) has a volume of about 33 cubic meters or 33,000 liters. This conversion is essential for water storage, shipping, and industrial applications.