Volume Converter

Convert between milliliters, liters, gallons, fluid ounces, cups, pints, quarts, cubic meters, and more.

Value

From

Common Volume Conversions

From	To	Result
1 Liter	US Gallons	0.264172 gal
1 US Gallon	Liters	3.78541 L
1 Liter	US Fluid Oz	33.814 fl oz
1 Cup (US)	Milliliters	236.588 ml
1 US Pint	Milliliters	473.176 ml
1 US Quart	Liters	0.946353 L
1 UK Gallon	Liters	4.54609 L
1 Cubic Foot	Liters	28.3168 L

Frequently Asked Questions

One US gallon equals 3.78541 liters. One UK/imperial gallon equals 4.54609 liters. The US and UK gallons differ because they were based on different historical standards. Always check whether a recipe or spec uses US or UK measurements.

One liter equals approximately 4.22675 US cups. One US cup equals 236.588 ml. Note that metric cups (used in Australia, Canada) are 250ml, so 1 liter = 4 metric cups exactly.

There are 16 US tablespoons in 1 US cup. One tablespoon equals 3 teaspoons = 14.7868 ml. One cup = 16 tbsp = 48 tsp = 8 fl oz = 236.588 ml.

One liter equals 33.814 US fluid ounces or 35.195 UK fluid ounces. One US fluid ounce equals 29.5735 ml. US and UK fluid ounces differ slightly, so be careful when converting between them.

A US gallon = 3.78541 liters, while a UK (imperial) gallon = 4.54609 liters — about 20% larger. This difference matters for fuel economy comparisons: a car rated 40 mpg UK is not the same as 40 mpg US. Always check which gallon a recipe, specification, or fuel economy rating is using.

There are exactly 1,000 liters in one cubic meter (1 m³ = 1000 L). This is because 1 liter is defined as 1 cubic decimeter (1 dm³), and there are 1,000 dm³ in a m³. This relationship makes converting between liters and cubic meters straightforward: just multiply or divide by 1,000.

A fluid ounce (fl oz) is a unit of volume (US fl oz = 29.5735 ml), while an ounce (oz) is a unit of weight (avoirdupois oz = 28.3495 g). They are different measurements entirely. One fl oz of water happens to weigh approximately 1.04 oz — but for other liquids like oil or honey, the volume and weight differ significantly.

Common cooking volume units include: 1 US cup = 240 ml, 1 tablespoon = 15 ml, 1 teaspoon = 5 ml. US recipes use cups, tablespoons, and teaspoons. European recipes typically use milliliters or grams. Australian and Canadian recipes use metric cups (250 ml). A US pint = 2 cups = 473 ml; a US quart = 4 cups = 946 ml.

An oil barrel (bbl) equals 42 US gallons = 158.987 liters. This standardized to the 42-gallon whiskey barrel used historically in Pennsylvania. Global oil production and prices are quoted in barrels (e.g., "Brent crude at $80 per barrel"). One barrel yields about 19 gallons of gasoline after refining.

Multiply cubic feet by 0.0283168 to get cubic meters. One cubic foot = 28.3168 liters. For example, a 10 ft³ refrigerator ≈ 0.283 m³ = 283 liters. To convert the other way, multiply cubic meters by 35.3147 to get cubic feet.

About This Volume Converter

This free volume converter converts between litres, millilitres, cubic metres, cubic centimetres, gallons (US and UK), fluid ounces, pints, quarts, and cubic inches. Enter a value in any unit for instant results.

When to use this converter

Converting liquid volumes in cooking and recipes
Comparing fuel tank sizes between vehicle models
Engineering and plumbing calculations involving volume

Standards & References

NIST — SI Units (litre)

How It Works

Enter Volume

Type the volume value. The converter works in real-time — no button press required.

Select Units

Choose source and target units from the extensive dropdown covering metric, US customary, and UK imperial units.

See Result

The conversion result appears immediately with the exact factor used. All values are based on international standards.

Common Use Cases

Cooking & Baking

Convert recipe ingredients between cups, tablespoons, teaspoons, and milliliters when following recipes from different countries.

Fuel & Automotive

Convert fuel quantities between liters, gallons, and fluid ounces for fuel efficiency calculations and international comparisons.

Beverages

Convert drink volumes between ml, fl oz, and pints for portion sizes, bar measurements, and international product labeling.

Medicine & Pharmacy

Convert medication dosage volumes between ml and fluid ounces, especially when interpreting instructions from different countries.

Tank & Container Sizing

Convert tank capacities between liters, gallons, and cubic feet for water storage, aquariums, and industrial vessel specifications.

Science & Lab

Convert laboratory volumes between ml and other units for experiments, titrations, and chemical solution preparations.

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