Every drink volume conversion on one page, with a calculator for any value and lookup tables for the amounts that come up most often behind a bar. All figures are computed from the exact US customary definitions, not rounded shorthand.
Convert any volume
The calculator below handles any number and any pair of units. It runs entirely in your browser — see the full set on the drink calculators page, which also covers standard drinks, dilution and ABV from gravity readings.
Open the volume converter →
Quick answers for common amounts
These are the values people look up most. For anything in between, use the converter above.
US fluid ounces to millilitres
| US fluid ounces |
Millilitres |
| 0.500 |
14.79 |
| 1.00 |
29.57 |
| 1.50 |
44.36 |
| 2.00 |
59.15 |
| 3.00 |
88.72 |
| 4.00 |
118.3 |
| 6.00 |
177.4 |
| 8.00 |
236.6 |
| 12.00 |
354.9 |
| 16.00 |
473.2 |
| 20.00 |
591.5 |
| 25.40 |
751.2 |
| 32.00 |
946.4 |
Millilitres to US fluid ounces
| Millilitres |
US fluid ounces |
| 15.00 |
0.507 |
| 30.00 |
1.01 |
| 50.00 |
1.69 |
| 100.0 |
3.38 |
| 150.0 |
5.07 |
| 200.0 |
6.76 |
| 250.0 |
8.45 |
| 330.0 |
11.16 |
| 355.0 |
12.00 |
| 500.0 |
16.91 |
| 750.0 |
25.36 |
| 1,000 |
33.81 |
US gallons to litres
| US gallons |
Litres |
| 0.250 |
0.946 |
| 0.500 |
1.89 |
| 1.00 |
3.79 |
| 2.00 |
7.57 |
| 3.00 |
11.36 |
| 5.00 |
18.93 |
| 7.75 |
29.34 |
| 10.00 |
37.85 |
| 15.50 |
58.67 |
Litres to US gallons
| Litres |
US gallons |
| 0.500 |
0.132 |
| 0.750 |
0.198 |
| 1.00 |
0.264 |
| 1.50 |
0.396 |
| 2.00 |
0.528 |
| 3.00 |
0.793 |
| 5.00 |
1.32 |
| 10.00 |
2.64 |
| 15.00 |
3.96 |
| 20.00 |
5.28 |
US cups to US fluid ounces
| US cups |
US fluid ounces |
| 0.250 |
2.00 |
| 0.330 |
2.64 |
| 0.500 |
4.00 |
| 0.750 |
6.00 |
| 1.00 |
8.00 |
| 1.50 |
12.00 |
| 2.00 |
16.00 |
| 3.00 |
24.00 |
| 4.00 |
32.00 |
| 6.00 |
48.00 |
| 8.00 |
64.00 |
US fluid ounces to litres
| US fluid ounces |
Litres |
| 0.500 |
0.015 |
| 1.00 |
0.030 |
| 1.50 |
0.044 |
| 2.00 |
0.059 |
| 3.00 |
0.089 |
| 4.00 |
0.118 |
| 6.00 |
0.177 |
| 8.00 |
0.237 |
| 12.00 |
0.355 |
| 16.00 |
0.473 |
| 20.00 |
0.591 |
| 25.40 |
0.751 |
| 32.00 |
0.946 |
Every unit against every other
One unit of the row, expressed in the column’s unit.
| 1 unit |
fl oz |
ml |
cup |
pint |
quart |
liter |
gallon |
| fl oz |
1 |
29.57 |
0.125 |
0.062 |
0.031 |
0.030 |
0.008 |
| ml |
0.034 |
1 |
0.004 |
0.002 |
0.001 |
0.001 |
0.000 |
| cup |
8.00 |
236.6 |
1 |
0.500 |
0.250 |
0.237 |
0.062 |
| pint |
16.00 |
473.2 |
2.00 |
1 |
0.500 |
0.473 |
0.125 |
| quart |
32.00 |
946.4 |
4.00 |
2.00 |
1 |
0.946 |
0.250 |
| liter |
33.81 |
1,000 |
4.23 |
2.11 |
1.06 |
1 |
0.264 |
| gallon |
128.0 |
3,785 |
16.00 |
8.00 |
4.00 |
3.79 |
1 |
What the bottles and glasses actually hold
Most volume questions in a bar are really questions about a container. These are the standard sizes.
| Container |
Millilitres |
US fluid ounces |
Litres |
| Standard wine bottle |
750.0 |
25.36 |
0.750 |
| Half bottle (demi) |
375.0 |
12.68 |
0.375 |
| Magnum |
1,500 |
50.72 |
1.50 |
| Standard spirits bottle (fifth) |
750.0 |
25.36 |
0.750 |
| Handle of liquor |
1,750 |
59.17 |
1.75 |
| US beer can |
354.9 |
12.00 |
0.355 |
| US pint glass |
473.2 |
16.00 |
0.473 |
| Standard US shot |
44.36 |
1.50 |
0.044 |
| Growler |
1,893 |
64.00 |
1.89 |
| Sixtel keg |
19,547 |
661.0 |
19.55 |
| Quarter barrel keg |
29,336 |
992.0 |
29.34 |
| Half barrel keg |
58,673 |
1,984 |
58.67 |
Where the numbers come from
One US fluid ounce is defined as exactly 29.5735295625 millilitres, and one US gallon as exactly 3.785411784 litres. Every figure on this page is derived from those definitions, so the cup, pint and quart rows follow exactly rather than from rounded approximations. Imperial units used in the UK differ: an imperial gallon is about 20% larger than a US gallon, and an imperial fluid ounce is slightly smaller than a US one.
