Volume / Capacity Converter

Most used volume units

Popular volume conversions

Liters to gallons 1 L = 0.2641721 gal
Gallons to liters 1 gal = 3.785412 L
Milliliters to fluid ounces 1 mL = 0.03381402 fl oz
Fluid ounces to milliliters 1 fl oz = 29.57353 mL
Cups to milliliters 1 cup = 236.5882 mL
Milliliters to cups 1 mL = 0.004226753 cup
Liters to cups 1 L = 4.226753 cup
Cups to fluid ounces 1 cup = 8 fl oz
Tablespoons to teaspoons 1 tbsp = 3 tsp
Teaspoons to milliliters 1 tsp = 4.928922 mL
Tablespoons to milliliters 1 tbsp = 14.78676 mL
Cubic meters to liters 1 m³ = 1,000 L
Liters to cubic meters 1 L = 0.001 m³
Cubic feet to gallons 1 ft³ = 7.480519 gal
Gallons to cubic feet 1 gal = 0.1336806 ft³
Cubic meters to cubic feet 1 m³ = 35.31467 ft³
Quarts to liters 1 qt = 0.9463529 L
Pints to liters 1 pt = 0.4731765 L
Liters to quarts 1 L = 1.056688 qt
Imperial gallons to liters 1 imp gal = 4.54609 L
Liters to milliliters 1 L = 1,000 mL
Milliliters to liters 1 mL = 0.001 L
Cubic centimeters to milliliters 1 cm³ = 1 mL
Barrels to gallons 1 bbl = 42 gal

What is volume?

Volume is the amount of three-dimensional space something occupies; capacity is how much a container can hold. Both are measured with the same units. The SI unit of volume is the cubic meter, but the liter, one thousandth of a cubic meter, is far more common in daily life.

Volume units come in two families. Cubic units are built from length units: a cubic centimeter is a cube 1 cm on each side. Capacity units such as the liter, the gallon and the cup were historically defined by containers and are now defined in terms of cubic units: one liter is exactly one cubic decimeter, and one US gallon is exactly 231 cubic inches.

Be careful with gallons, pints, quarts, cups and fluid ounces: the US and imperial (UK) versions have the same names but different sizes. An imperial gallon is about 20% larger than a US gallon, and an imperial pint has 20 fluid ounces against 16 in the US.

Common volume equivalents

1 liter = 1,000 mL = 1,000 cm³ ≈ 33.814 US fl oz ≈ 1.0567 US quarts
1 US gallon = 4 quarts = 8 pints = 16 cups = 128 fl oz = 3.785411784 L
1 imperial gallon = 4.54609 L ≈ 1.20095 US gallons
1 US cup = 8 fl oz = 16 tablespoons ≈ 236.6 mL
1 US tablespoon = 3 teaspoons ≈ 14.79 mL
1 cubic meter = 1,000 L ≈ 264.17 US gallons ≈ 35.315 cubic feet
1 cubic foot ≈ 28.317 L ≈ 7.4805 US gallons
1 oil barrel = 42 US gallons ≈ 158.99 L

US versus imperial measures

The US and the UK both inherited English wine and ale measures, but Britain replaced them in 1824 with the imperial gallon, defined as the volume of 10 pounds of water. The US kept the older wine gallon of 231 cubic inches. As a result:

A US gallon (3.785 L) is smaller than an imperial gallon (4.546 L).
A US fluid ounce (29.57 mL) is larger than an imperial fluid ounce (28.41 mL).
A US pint has 16 fl oz (473 mL); an imperial pint has 20 fl oz (568 mL), which is why a British pint of beer is bigger.

Most modern recipes outside the US use metric cups (250 mL) and spoons (15 mL and 5 mL); Australia uses a 20 mL tablespoon.

Volume units from smallest to largest

Every proportional volume unit on the site, ordered by size and expressed in liters.

Planck volume 4.222 × 10^-102 L
Cubic Bohr radius 1.481847 × 10^-28 L
Cubic ångström 1 × 10^-27 L
Cubic millimeter 0.000001 L
Microliter 0.000001 L
Lambda 0.000001 L
Drop 0.00005 L
Imperial minim 0.0000591939 L
Minim 0.0000616115 L
Smidgen 0.000154029 L
Sai 0.00018039 L
Pinch 0.000308058 L
Dash 0.000616115 L
Milliliter 0.001 L
Cubic centimeter 0.001 L
Chinese cuo 0.001 L
Fluid scruple 0.00118388 L
Tad 0.00123223 L
Saltspoon 0.00123223 L
Coffeespoon 0.00246446 L
Imperial fluid drachm 0.00355163 L
Fluid dram 0.00369669 L
Teaspoon 0.00492892 L
Metric teaspoon 0.005 L
Imperial teaspoon 0.00591939 L
Centiliter 0.01 L
Chinese shao 0.01 L
Ligula 0.0114 L
Imperial dessertspoon 0.0118388 L
Tablespoon 0.0147868 L
Metric tablespoon 0.015 L
Cubic inch 0.0163871 L
Imperial tablespoon 0.0177582 L
Japanese shaku (volume) 0.018039 L
Australian tablespoon 0.02 L
Imperial fluid ounce 0.0284131 L
Fluid ounce 0.0295735 L
Roquille 0.0298 L
Ro 0.03 L
Shot 0.0443603 L
Roman cyathus 0.0456 L
Kyathos 0.0456 L
Shkalik 0.0615 L
Acetabulum 0.0684 L
Deciliter 0.1 L
Chinese ge 0.1 L
Gill 0.118294 L
Wineglass 0.118294 L
Stick of butter (volume) 0.118294 L
Posson 0.119 L
Charka 0.123 L
Copa 0.126 L
Quartarius 0.137 L
Imperial gill 0.142065 L
Teacup 0.177441 L
Hop 0.18 L
Go 0.18039 L
Piccolo 0.1875 L
Japanese cup 0.2 L
Canadian cup 0.227305 L
Cup 0.236588 L
Demiard 0.238 L
US legal cup 0.24 L
Metric cup 0.25 L
Hemina 0.274 L
Kotyle 0.274 L
Imperial cup 0.284131 L
Log 0.305 L
Quartilho 0.348 L
Soda can 0.355 L
Half bottle 0.375 L
Pint 0.473176 L
Chopine 0.476 L
Egyptian hin 0.48 L
Schoppen 0.5 L
Cuartillo 0.504 L
Seidel 0.535 L
Sextarius 0.547 L
Xestes 0.547 L
Dry pint 0.55061 L
Imperial pint 0.568261 L
Russian vodka bottle 0.615 L
Standard wine bottle 0.75 L
Fifth 0.757082 L
Quart 0.946353 L
Pinte 0.952 L
Liter 1 L
Cubic decimeter 1 L
Sheng 1 L
Thanan 1 L
Dutch kan 1 L
Mass 1.069 L
Choinix 1.094 L
Dry quart 1.10122 L
Imperial quart 1.13652 L
Kab 1.22 L
Kruzhka 1.23 L
Swedish stop 1.3085 L
Canada 1.4 L
Magnum 1.5 L
Doe 1.8 L
Sho 1.8039 L
Pottle 1.89271 L
Azumbre 2.016 L
Omer 2.2 L
Imperial pottle 2.27305 L
Board foot 2.35974 L
Kanna 2.617 L
Jeroboam 3 L
Garnets 3.28 L
Congius 3.283 L
Chous 3.283 L
Biblical hin 3.67 L
Gallon 3.78541 L
Rehoboam 4.5 L
Imperial gallon 4.54609 L
Kappe 4.58 L
Almud 4.625 L
Heqat 4.8 L
Methuselah 6 L
Seah 7.33 L
Velte 7.45 L
Modius 8.73 L
Peck 8.80977 L
Salmanazar 9 L
Imperial peck 9.09218 L
Decaliter 10 L
Dou 10 L
Balthazar 12 L
Vedro 12.3 L
Boisseau 13 L
Urna 13.13 L
Alqueire 13.8 L
Nebuchadnezzar 15 L
Cantara 16.13 L
Almude 16.8 L
Melchior 18 L
Mal 18 L
To 18.039 L
Solomon 20 L
Thai sat 20 L
Ephah 22 L
Bath 22 L
Chetverik 26.24 L
Sovereign 26.25 L
Roman amphora 26.26 L
Primat 27 L
Cubic foot 28.3168 L
Standard cubic foot 28.3168 L
Melchizedek 30 L
Bushel 35.2391 L
Imperial bushel 36.3687 L
Metretes 39.4 L
Firkin 40.9148 L
Heaped bushel 44.0488 L
Medimnos 52.5 L
Scheffel 54.96 L
Fanega 55.5 L
Eimer 64.14 L
Quartaut 67.1 L
English wine rundlet 68.1374 L
Strike 72.7374 L
Khar 76.8 L
Kilderkin 81.8296 L
Hectoliter 100 L
Chinese dan 100 L
Dutch mud 100 L
Osmina 104.95 L
Lethech 110 L
Dry barrel 115.628 L
US liquid barrel 119.24 L
Feuillette 134 L
Coomb 145.475 L
Tunna 146.6 L
Ohm 150 L
Bathtub 150 L
Setier 156 L
Barrel 158.987 L
Tierce 158.987 L
UK beer barrel 163.659 L
Seom 180 L
Koku 180.39 L
Russian chetvert 209.9 L
Cor 220 L
Oxhoft 225 L
US hogshead 238.481 L
Imperial hogshead 245.489 L
Muid 268 L
Quarter (UK dry) 290.95 L
Puncheon 317.975 L
Pipe 476.962 L
Butt 490.978 L
Bochka 491.96 L
Culleus 525.3 L
Cubic yard 764.555 L
Moio 828 L
Wine tun 953.924 L
UK beer tun 981.955 L
Displacement ton (volume) 991.09 L
Cubic meter 1,000 L
Kiloliter 1,000 L
Stere 1,000 L
Normal cubic meter 1,000 L
Standard cubic meter 1,000 L
Fuder 1,000 L
Water ton 1,018.32 L
Freight ton 1,132.67 L
Face cord 1,208.19 L
Chaldron 1,309.27 L
Hot tub 1,500 L
Kwian 2,000 L
Register ton 2,831.68 L
Last 2,909.5 L
Cord 3,624.56 L
Thousand cubic feet 28,316.8 L
Twenty-foot equivalent unit 33,200 L
Forty-foot equivalent unit 67,700 L
Acre-inch 102,790 L
Thousand barrels 158,987 L
Megaliter 1,000,000 L
Acre-foot 1,233,480 L
Olympic swimming pool 2,500,000 L
Hot-air balloon 2,800,000 L
Million cubic feet 28,316,800 L
Million barrels 158,987,000 L
Gigaliter 1,000,000,000 L
Billion cubic feet 28,316,800,000 L
Sydharb 562,000,000,000 L
Cubic kilometer 1,000,000,000,000 L
Cubic mile 4,168,180,000,000 L
Trillion cubic feet 28,316,800,000,000 L
Lake Erie 484,000,000,000,000 L
Grand Canyon 4.17 × 10¹⁵ L
Earth volume 1.08321 × 10²⁴ L

All 234 volume units

Metric

US liquid

US dry

Imperial (UK)

Wine & spirits

Cooking (metric & informal)

Oil, gas & shipping

Scientific

Ancient

East & Southeast Asian

European (pre-metric)

Everyday comparisons

Frequently asked questions

How many liters are in a gallon?

A US gallon is exactly 3.785411784 liters. An imperial (UK) gallon is exactly 4.54609 liters.

How many milliliters are in a cup?

A US customary cup is about 236.6 mL, a US legal (nutrition label) cup is 240 mL, and a metric cup is 250 mL.

How many ounces are in a cup?

A US cup holds 8 US fluid ounces. An imperial cup is 10 imperial fluid ounces.

Is a liter the same as a cubic decimeter?

Yes. Since 1964 the liter has been defined as exactly one cubic decimeter (1 dm³), and one milliliter is exactly one cubic centimeter.

How many gallons are in a barrel of oil?

An oil barrel is exactly 42 US gallons, about 159 liters.