1 us-gallons is equal to
= 3.785411784 liters

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Volume

Volume is the quantity of three-dimensional space enclosed by a closed surface, for example, the space that a substance (solid, liquid, gas, or plasma) or shape occupies or contains. Volume is often quantified numerically using the SI derived unit, the cubic meter. The volume of a container is generally understood to be the capacity of the container, i. e. the amount of fluid (gas or liquid) that the container could hold, rather than the amount of space the container itself displaces.

Any unit of length gives a corresponding unit of volume: the volume of a cube whose sides have the given length. For example, a cubic centimeter (cm3) is the volume of a cube whose sides are one centimeter (1 cm) in length.

In the International System of Units (SI), the standard unit of volume is the cubic meter (m3). The metric system also includes the liter (L) as a unit of volume, where one liter is the volume of a 10-centimeter cube. Thus 1 liter = (10 cm)3 = 1000 cubic centimeters = 0.001 cubic meters, so; 1 cubic meter = 1000 liters.

Small amounts of liquid are often measured in milliliters, where 1 milliliter = 0.001 liters = 1 cubic centimeter.

Volume unitsSymbolDefinitionRelation to SI units
acre-footac ft≡ 1 ac x 1 ft = 43560 cu ft= 1233.48183754752 m3
acre-inch ≡ 1 ac × 1 in= 102.79015312896 m3
barrel (imperial)bl (imp)≡ 36 gal (imp)= 0.16365924 m3
barrel (petroleum); archaic blue-barrelbl; bbl≡ 42 gal (US)= 0.158987294928 m3
barrel (US dry)bl (US)≡ 105 qt (US) = 105/32 bu (US lvl)= 0.115628198985075 m3
barrel (US fluid)fl bl (US)≡  31 1⁄2 gal (US)= 0.119240471196 m3
board-footfbm≡ 144 cu in≡ 2.359737216×10−3 m3
bucket (imperial)bkt≡ 4 gal (imp)= 0.01818436 m3
bushel (imperial)bu (imp)≡ 8 gal (imp)= 0.03636872 m3
bushel (US dry heaped)bu (US)≡  1 1⁄4 bu (US lvl)= 0.0440488377086 m3
bushel (US dry level)bu (US lvl)≡ 2150.42 cu in= 0.03523907016688 m3
butt, pipe ≡ 126 gal (wine)= 0.476961884784 m3
coomb ≡ 4 bu (imp)= 0.14547488 m3
cord (firewood) ≡ 8 ft × 4 ft × 4 ft= 3.624556363776 m3
cord-foot ≡ 16 cu ft= 0.453069545472 m3
cubic fathomcu fm≡ 1 fm × 1 fm × 1 fm= 6.116438863872 m3
cubic footcu ft≡ 1 ft × 1 ft × 1 ft≡ 0.028316846592 m3
cubic inchcu in≡ 1 in × 1 in × 1 in≡ 16.387064×10−6 m3
cubic metre (SI unit)m3≡ 1 m × 1 m × 1 m≡ 1 m3
cubic milecu mi≡ 1 mi × 1 mi × 1 mi≡ 4168181825.440579584 m3
cubic yardcu yd≡ 27 cu ft≡ 0.764554857984 m3
cup (breakfast) ≡ 10 fl oz (imp)= 284.130625×10−6 m3
cup (Canadian)c (CA)≡ 8 fl oz (imp)= 227.3045×10−6 m3
cup (metric)c≡ 250.0×10−6 m3= 250.0×10−6 m3
cup (US customary)c (US)≡ 8 US fl oz ≡  1⁄16 gal (US)= 236.5882365×10−6 m3
cup (US food nutrition labeling)c (US)≡ 240 mL[20]= 2.4×10−4 m3
dash (imperial) ≡  1⁄384 gi (imp) =  1⁄2 pinch (imp)= 369.961751302083×10−9 m3
dash (US) ≡  1⁄96 US fl oz =  1⁄2 US pinch= 308.057599609375×10−9 m3
dessertspoon (imperial) ≡  1⁄12 gi (imp)= 11.8387760416×10−6 m3
drop (imperial)gtt≡  1⁄288 fl oz (imp)= 98.6564670138×10−9 m3
drop (imperial) (alt)gtt≡  1⁄1824 gi (imp)≈ 77.886684×10−9 m3
drop (medical) ≡  0.9964⁄12 ml= 83.03×10−9 m3
drop (medical) ≡  1⁄12 ml= 83.3×10−9 m3
drop (metric) ≡  1⁄20 mL= 50.0×10−9 m3
drop (US)gtt≡  1⁄360 US fl oz= 82.14869322916×10−9 m3
drop (US) (alt)gtt≡  1⁄456 US fl oz≈ 64.85423149671×10−9 m3
drop (US) (alt)gtt≡  1⁄576 US fl oz≈ 51.34293326823×10−9 m3
fifth ≡  1⁄5 US gal= 757.0823568×10−6 m3
firkin ≡ 9 gal (imp)= 0.04091481 m3
fluid drachm (imperial)fl dr≡  1⁄8 fl oz (imp)= 3.5516328125×10−6 m3
fluid dram (US); US fluidramfl dr≡  1⁄8 US fl oz= 3.6966911953125×10−6 m3
fluid scruple (imperial)fl s≡  1⁄24 fl oz (imp)= 1.18387760416×10−6 m3
gallon (beer)beer gal≡ 282 cu in= 4.621152048×10−3 m3
gallon (imperial)gal (imp)≡ 4.54609 L≡ 4.54609×10−3 m3
gallon (US dry)gal (US)≡  1⁄8 bu (US lvl)= 4.40488377086×10−3 m3
gallon (US fluid; Wine)gal (US)≡ 231 cu in≡ 3.785411784×10−3 m3
gill (imperial); Noggingi (imp); nog≡ 5 fl oz (imp)= 142.0653125×10−6 m3
gill (US)gi (US)≡ 4 US fl oz= 118.29411825×10−6 m3
hogshead (imperial)hhd (imp)≡ 2 bl (imp)= 0.32731848 m3
hogshead (US)hhd (US)≡ 2 fl bl (US)= 0.238480942392 m3
jigger (bartending) ≡  1 1⁄2 US fl oz≈ 44.36×10−6 m3
kilderkin ≡ 18 gal (imp)= 0.08182962 m3
lambdaλ≡ 1 mm3= 1×10−9 m3
last ≡ 80 bu (imp)= 2.9094976 m3
litre   
(liter)L≡ 1 dm3 [21]≡ 0.001 m3
load ≡ 50 cu ft= 1.4158423296 m3
minim (imperial)min≡  1⁄480 fl oz (imp) = 1/60 fl dr (imp)= 59.1938802083×10−9 m3
minim (US)min≡  1⁄480 US fl oz =  1⁄60 US fl dr= 61.611519921875×10−9 m3
ounce (fluid imperial)fl oz (imp)≡  1⁄160 gal (imp)≡ 28.4130625×10−6 m3
ounce (fluid US customary)US fl oz≡  1⁄128 gal (US)≡ 29.5735295625×10−6 m3
ounce (fluid US food nutrition labeling)US fl oz≡ 30 mL[20]≡ 3×10−5 m3
peck (imperial)pk≡ 2 gal (imp)= 9.09218×10−3 m3
peck (US dry)pk≡  1⁄4 US lvl bu= 8.80976754172×10−3 m3
perchper≡  16 1⁄2 ft ×  1 1⁄2 ft × 1 ft= 0.700841953152 m3
pinch (imperial) ≡  1⁄192 gi (imp) = 1/16 tsp (imp)= 739.92350260416×10−9 m3
pinch (US) ≡  1⁄48 US fl oz = 1/16 US tsp= 616.11519921875×10−9 m3
pint (imperial)pt (imp)≡  1⁄8 gal (imp)= 568.26125×10−6 m3
pint (US dry)pt (US dry)≡  1⁄64 bu (US lvl) ≡  1⁄8 gal (US dry)= 550.6104713575×10−6 m3
pint (US fluid)pt (US fl)≡  1⁄8 gal (US)= 473.176473×10−6 m3
pony ≡  3⁄4 US fl oz= 22.180147171875×10−6 m3
pottle; quartern ≡  1⁄2 gal (imp) = 80 fl oz (imp)= 2.273045×10−3 m3
quart (imperial)qt (imp)≡  1⁄4 gal (imp)= 1.1365225×10−3 m3
quart (US dry)qt (US)≡  1⁄32 bu (US lvl) =  1⁄4 gal (US dry)= 1.101220942715×10−3 m3
quart (US fluid)qt (US)≡  1⁄4 gal (US fl)= 946.352946×10−6 m3
quarter; pail ≡ 8 bu (imp)= 0.29094976 m3
register ton ≡ 100 cu ft= 2.8316846592 m3
sack (imperial); bag ≡ 3 bu (imp)[citation needed]= 0.10910616 m3
sack (US) ≡ 3 bu (US lvl)= 0.10571721050064 m3
seam ≡ 8 bu (US lvl)[citation needed]= 0.28191256133504 m3
shot (US) usually 1.5 US fl oz[18]≈ 44×10−6 m3
strike (imperial) ≡ 2 bu (imp)= 0.07273744 m3
strike (US) ≡ 2 bu (US lvl)= 0.07047814033376 m3
tablespoon (Australian metric)  ≡ 20.0×10−6 m3
tablespoon (Canadian)tbsp≡  1⁄2 fl oz (imp)= 14.20653125×10−6 m3
tablespoon (imperial)tbsp≡  5⁄8 fl oz (imp)= 17.7581640625×10−6 m3
tablespoon (metric)  ≡ 15.0×10−6 m3
tablespoon (US customary)tbsp≡  1⁄2 US fl oz= 14.78676478125×10−6 m3
tablespoon (US food nutrition labeling)tbsp≡ 15 mL[20]= 1.5×10−5 m3
teaspoon (Canadian)tsp≡  1⁄6 fl oz (imp)= 4.735510416×10−6 m3
teaspoon (imperial)tsp≡  1⁄24 gi (imp)= 5.91938802083×10−6 m3
teaspoon (metric) ≡ 5.0×10−6 m3= 5.0×10−6 m3
teaspoon (US customary)tsp≡  1⁄6 US fl oz= 4.92892159375×10−6 m3
teaspoon (US food nutrition labeling)tsp≡ 5 mL[20]= 5×10−6 m3
timber foot ≡ 1 cu ft= 0.028316846592 m3
ton (displacement) ≡ 35 cu ft= 0.99108963072 m3
ton (freight) ≡ 40 cu ft= 1.13267386368 m3
ton (water) ≡ 28 bu (imp)= 1.01832416 m3
tun ≡ 252 gal (wine)= 0.953923769568 m3
wey (US) ≡ 40 bu (US lvl)= 1.4095628066752 m3