Unit of Measure Conversions
Fluid Capacity Conversions
Additional Units and Information
| Name | Symbol | Value | Description/Notes |
|---|---|---|---|
| barrel | 36 UK gallons | UK beer barrel | |
| barrel | 31 US gallons | US beer barrel | |
| barrel | bbl | 42 US gallons | US oil barrel |
| cubic centimetre |
cc; cm³ | 1 millilitre | |
| gal | 1 UK (imperial) gallon | Volume occupied by 10 pounds of distilled water | |
| gill | ¼ pint | ||
| jack | ½ gill | ||
| keg | 15½ US gallons | ½ US beer barrel {but see Beer Measures (UK) below} | |
| litre | l | 1 cubic decimetre | Volume of pure water having a mass of 1 kilogram at 4°C (39.2°F)* and 1 atm pressure^ |
| miniature | 50 millilitres | Also called "nip" {but see Beer Measures (UK) below} & "shooter" | |
| shot | 25 millilitres |
Apothecaries' Fluid Measures (UK)
| Name | Symbol | Value | Description/Notes |
|---|---|---|---|
| minim | min | Approx 1 drop | 0.059194 cc |
| fluid drachm | fldr | 60 minims | 3.551633 cc |
| fluid ounce | floz | 8 fluid drachms | 28.413063 cc |
| pint | pt | 20 fluid ounces | 568.26125 cc |
Beer Measures (UK)
| Name | Symbol | Value | Description/Notes |
|---|---|---|---|
| nip | ⅓ pint | ||
| half | ½ pint | ||
| gallon | gal | 8 pints | |
| pin | 4½ gallons | 36 pints | |
| firkin | 2 pins | 9 gallons; 72 pints | |
| keg | 11 gallons | 88 pints | |
| kilderkin | 2 firkins | 18 gallons; 144 pints | |
| barrel | 2 kilderkins | 36 gallons; 288 pints | |
| hogshead | 1½ barrels | 54 gallons; 432 pints | |
| puncheon | 2 barrels | 72 gallons; 576 pints | |
| butt | 2 hogsheads | 108 gallons; 864 pints | |
| tun | 2 butts | 216 gallons; 1,728 pints |
Wine Measures
| Name | Symbol | Value | Description/Notes |
|---|---|---|---|
| quarter bottle | 187½ millilitres | Also called "piccolo", "pony", "snipe" & "split" | |
| chopine | 250 millilitres | ⅓ bottle | |
| half bottle | 375 millilitres | Also called "demi" | |
| bottle | 750 millilitres | ||
| litre | 1 litre | 1⅓ bottles | |
| magnum | 1½ litres | 2 bottles | |
| jeroboam | 3 litres | 4 bottles. Also called "double magnum" | |
| rehoboam | 4½ litres | 6 bottles | |
| methuselah | 6 litres | 8 bottles. Also called "imperial" | |
| salmanazar | 9 litres | 12 bottles | |
| balthazar | 12 litres | 16 bottles | |
| nebuchadnezzar | 15 litres | 20 bottles | |
| melchior | 18 litres | 24 bottles |
Useful Approximations
| Approximation | % Accuracy |
|---|---|
| 1 US fluid ounce ≈ 30 millilitres | 98.6 |
| 1 US pint ≈ 1/10 UK gallon | 96.1 |
| 1 US gallon ≈ 6⅔ UK pints | 99.9 |
| 1 litre ≈ 1¾ UK pints | 99.4 |
| 100 litres ≈ 22 UK gallons | 99.9 |
| 1 cubic metre ≈ 220 UK gallons | 99.9 |
| 5 UK gallons ≈ 6 US gallons | 99.9 |
| 1 cubic foot of pure water weighs 62¼ pounds | 99.7 |