Converter category
Volume & Capacity Converter
Convert metric, US liquid, cubic, barrel, dry-volume, cooking, and explicitly defined drop units.
Universal Volume & Capacity Converter
US and Imperial units can differ. This converter uses the explicitly labeled US liquid, US dry, barrel, and metric definitions shown in each unit name.
About volume & capacity conversions
Volume conversions are needed in the kitchen, at the gas pump, in the laboratory, and on construction sites. Our volume converter covers metric units such as milliliters, liters, and cubic meters, plus US customary and Imperial units including teaspoons, tablespoons, fluid ounces, cups, pints, quarts, gallons, and cubic inches. It also handles cooking-specific and barrel measurements. Each unit is labeled clearly as US or Imperial where they differ, so you never accidentally mix systems. Enter a value and get an accurate conversion instantly.
Most popular volume & capacity conversions
Available units
Popular volume & capacity conversions (24 total)
Unit definitions
Milliliter (mL)
A milliliter is one thousandth of a liter, approximately equal to one cubic centimeter. A teaspoon holds about 5 mL.
Origin: Part of the metric system, where milli- denotes one-thousandth.
Current use: Medicine dosages, Cooking measurements, Laboratory work
Liter (L)
A liter is a metric unit of volume equal to 1000 milliliters or approximately 1.057 US quarts.
Origin: The liter was introduced in France in 1795 as one cubic decimeter.
Current use: Beverage containers, Fuel volumes, Liquid measurements
Cubic Meter (m³)
A cubic meter is the SI unit of volume, equal to 1000 liters or approximately 35.3 cubic feet.
Origin: Derived from the meter, the SI base unit of length.
Current use: Construction, Water billing, Shipping containers
Cubic Centimeter (cm³)
A cubic centimeter equals one milliliter. It is commonly used for engine displacement and medical dosages.
Origin: SI derived unit from the centimeter.
Current use: Engine displacement, Medical injections, Scientific measurements
Cubic Inch (in³)
A cubic inch is the volume of a cube with 1-inch sides, approximately 16.4 milliliters.
Origin: Derived from the inch, part of the Imperial system.
Current use: Engine displacement (US), Plumbing, Manufacturing
Cubic Foot (ft³)
A cubic foot is the volume of a cube with 1-foot sides, approximately 28.3 liters.
Origin: Part of the Imperial measurement system.
Current use: HVAC calculations, Shipping volumes, Real estate
Cubic Yard (yd³)
A cubic yard is the volume of a cube with 1-yard sides, approximately 765 liters or 27 cubic feet.
Origin: Commonly used in construction for concrete and aggregate measurements.
Current use: Concrete ordering, Landscaping, Excavation
US Cup (US cup)
A US cup is 8 fluid ounces or about 237 mL. Standard US cooking measurement.
Origin: Standardized in US in 1896.
Current use: Cooking (US), Recipes, Baking
US Tablespoon (tbsp)
A US tablespoon is 1/2 fluid ounce or about 14.8 milliliters. Common in cooking recipes.
Origin: Standardized in the US in 1858.
Current use: Cooking recipes, Medicine dosing, Baking
US Teaspoon (tsp)
A US teaspoon is 1/3 tablespoon or about 4.9 milliliters.
Origin: Commonly used as a unit of measure in cooking and pharmacy.
Current use: Cooking recipes, Baking, Medicine dosing
US Fluid Ounce (US fl oz)
A US fluid ounce is 1/128 of a US gallon, approximately 29.6 milliliters.
Origin: Derived from the Roman uncia (one-twelfth) of a liquid gallon.
Current use: Drink recipes, Medicine dosages, Cooking
US Liquid Pint (US pt)
A US liquid pint is 1/8 of a US gallon, equal to 473 milliliters.
Origin: From the Old French pinte, possibly referring to a measurement of wine.
Current use: Beer serving, Dairy products, Cooking
US Liquid Quart (US qt)
A US liquid quart is 1/4 of a US gallon, equal to 946 milliliters.
Origin: From the Old French quarte, meaning one-fourth.
Current use: Milk packaging, Cooking recipes, Liquid measure
US Liquid Gallon (US gal)
A US liquid gallon is exactly 3.785 liters. It is used for measuring liquids in the United States.
Origin: Originally based on the volume of 8 pounds of wine. Standardized to 231 cubic inches in 1707.
Current use: Fuel volumes, Beverage containers, Liquid shipping
US Gill (US gi)
A US gill is 1/2 cup or 4 fluid ounces (118 mL).
Origin: Traditional British and US liquid measure.
Current use: Bartending, Traditional recipes, Spirits serving
US Liquid Barrel (31.5 gal) (bbl)
US liquid barrel is 31.5 gallons or about 119 liters.
Origin: Standardized in 1866 for petroleum and other liquids.
Current use: Beverage production, Chemical storage, Industrial liquids
Oil Barrel (42 gal) (bbl oil)
Standard oil barrel is 42 US gallons or 159 liters. The international standard.
Origin: Standardized in the 1870s by the Pennsylvania oil industry.
Current use: Oil industry, Energy trading, Petroleum
US Beer Barrel (31 gal) (bbl beer)
US beer barrel is 31 gallons. Standard for brewing.
Origin: Set by US tax code in 1866.
Current use: Brewing, Beer production, Pubs
US Dry Bushel (US bu)
US dry bushel is 35.24 liters. Used for agricultural commodities.
Origin: Standardized in 1912 for wheat and other grains.
Current use: Agriculture, Grain trading, Crop measurement
US Dry Peck (US pk)
US dry peck is 8.81 liters or 1/4 bushel.
Origin: Old English measure, standardized historically.
Current use: Fruit orchards, Gardening, Small-scale farming
Metric Drop (0.05 mL) (gtt)
A metric drop is 0.05 mL or 20 drops per milliliter.
Origin: Used in medicine and cooking.
Current use: Medicine dosing, Perfume, Baking
Common uses for volume conversions
Volume conversions are used in cooking and baking, fuel economy, chemistry, medicine dosing, construction, travel, and beverage recipes.
Frequently asked questions about volume & capacity
How many liters are in a gallon?+
One US gallon is about 3.785 liters. One Imperial gallon is about 4.546 liters.
What is the difference between US and Imperial fluid ounces?+
A US fluid ounce is about 29.57 ml. An Imperial fluid ounce is about 28.41 ml. The converter labels each one clearly.
Which volume units does this converter support?+
It supports metric, US liquid, US dry, Imperial, cubic, cooking, and barrel units — over 20 in total.