| imperial barrel | 1 bl (imp) | 2 bl (imp) | 3 bl (imp) | 4 bl (imp) | 5 bl (imp) | 6 bl (imp) | 7 bl (imp) | 8 bl (imp) | 9 bl (imp) | 10 bl (imp) | 11 bl (imp) | 12 bl (imp) | 13 bl (imp) | 14 bl (imp) | 15 bl (imp) | 16 bl (imp) | 17 bl (imp) | 18 bl (imp) | 19 bl (imp) | 20 bl (imp) | 21 bl (imp) | 22 bl (imp) | 23 bl (imp) | 24 bl (imp) | 25 bl (imp) | 26 bl (imp) | 27 bl (imp) | 28 bl (imp) | 29 bl (imp) | 30 bl (imp) | 31 bl (imp) | 32 bl (imp) | 33 bl (imp) | 34 bl (imp) | 35 bl (imp) | 36 bl (imp) | 37 bl (imp) | 38 bl (imp) | 39 bl (imp) | 40 bl (imp) | 41 bl (imp) | 42 bl (imp) | 43 bl (imp) | 44 bl (imp) | 45 bl (imp) | 46 bl (imp) | 47 bl (imp) | 48 bl (imp) | 49 bl (imp) | 50 bl (imp) | 51 bl (imp) | 52 bl (imp) | 53 bl (imp) | 54 bl (imp) | 55 bl (imp) | 56 bl (imp) | 57 bl (imp) | 58 bl (imp) | 59 bl (imp) | 60 bl (imp) | 61 bl (imp) | 62 bl (imp) | 63 bl (imp) | 64 bl (imp) | 65 bl (imp) | 66 bl (imp) | 67 bl (imp) | 68 bl (imp) | 69 bl (imp) | 70 bl (imp) | 71 bl (imp) | 72 bl (imp) | 73 bl (imp) | 74 bl (imp) | 75 bl (imp) | 76 bl (imp) | 77 bl (imp) | 78 bl (imp) | 79 bl (imp) | 80 bl (imp) | 81 bl (imp) | 82 bl (imp) | 83 bl (imp) | 84 bl (imp) | 85 bl (imp) | 86 bl (imp) | 87 bl (imp) | 88 bl (imp) | 89 bl (imp) | 90 bl (imp) | 91 bl (imp) | 92 bl (imp) | 93 bl (imp) | 94 bl (imp) | 95 bl (imp) | 96 bl (imp) | 97 bl (imp) | 98 bl (imp) | 99 bl (imp) | 100 bl (imp) |
| canadian cup | 720 c (CA) | 1 440 c (CA) | 2 160 c (CA) | 2 880 c (CA) | 3 600 c (CA) | 4 320 c (CA) | 5 040 c (CA) | 5 760 c (CA) | 6 480 c (CA) | 7 200 c (CA) | 7 920 c (CA) | 8 640 c (CA) | 9 360 c (CA) | 10 080 c (CA) | 10 800 c (CA) | 11 520 c (CA) | 12 240 c (CA) | 12 960 c (CA) | 13 680 c (CA) | 14 400 c (CA) | 15 120 c (CA) | 15 840 c (CA) | 16 560 c (CA) | 17 280 c (CA) | 18 000 c (CA) | 18 720 c (CA) | 19 440 c (CA) | 20 160 c (CA) | 20 880 c (CA) | 21 600 c (CA) | 22 320 c (CA) | 23 040 c (CA) | 23 760 c (CA) | 24 480 c (CA) | 25 200 c (CA) | 25 920 c (CA) | 26 640 c (CA) | 27 360 c (CA) | 28 080 c (CA) | 28 800 c (CA) | 29 520 c (CA) | 30 240 c (CA) | 30 960 c (CA) | 31 680 c (CA) | 32 400 c (CA) | 33 120 c (CA) | 33 840 c (CA) | 34 560 c (CA) | 35 280 c (CA) | 36 000 c (CA) | 36 720 c (CA) | 37 440 c (CA) | 38 160 c (CA) | 38 880 c (CA) | 39 600 c (CA) | 40 320 c (CA) | 41 040 c (CA) | 41 760 c (CA) | 42 480 c (CA) | 43 200 c (CA) | 43 920 c (CA) | 44 640 c (CA) | 45 360 c (CA) | 46 080 c (CA) | 46 800 c (CA) | 47 520 c (CA) | 48 240 c (CA) | 48 960 c (CA) | 49 680 c (CA) | 50 400 c (CA) | 51 120 c (CA) | 51 840 c (CA) | 52 560 c (CA) | 53 280 c (CA) | 54 000 c (CA) | 54 720 c (CA) | 55 440 c (CA) | 56 160 c (CA) | 56 880 c (CA) | 57 600 c (CA) | 58 320 c (CA) | 59 040 c (CA) | 59 760 c (CA) | 60 480 c (CA) | 61 200 c (CA) | 61 920 c (CA) | 62 640 c (CA) | 63 360 c (CA) | 64 080 c (CA) | 64 800 c (CA) | 65 520 c (CA) | 66 240 c (CA) | 66 960 c (CA) | 67 680 c (CA) | 68 400 c (CA) | 69 120 c (CA) | 69 840 c (CA) | 70 560 c (CA) | 71 280 c (CA) | 72 000 c (CA) |
A barrel is one of several units of volume applied in various contexts; there are dry barrels, fluid barrels (such as the UK beer barrel and US beer barrel), oil barrels and so on. For historical reasons the volumes of some barrel units are roughly double the volumes of others; volumes in common usage range from about 100 to 200 litres (22 to 44 imp gal; 26 to 53 US gal). In many connections the term "drum" is used almost interchangeably with "barrel".
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| imperial barrel | bl (imp) | ≡ 36 gal (imp) | = 0.16365924 m3 | Imperial/US |
| imperial barrels | canadian cups | imperial barrels | canadian cups |
|---|---|---|---|
| 1 | = 720 | 6 | = 4320 |
| 2 | = 1440 | 7 | = 5040 |
| 3 | = 2160 | 8 | = 5760 |
| 4 | = 2880 | 9 | = 6480 |
| 5 | = 3600 | 10 | = 7200 |
Canada now usually employs the metric cup of 250 mL but its conventional cup was somewhat smaller than both American and imperial units.
1 Canadian cup = 8 imperial fluid ounce = 1/20 imperial gallon = 227.3045 millilitres
1 tablespoon = 1/2 imperial fluid ounce
1 teaspoon = 1/6 imperial fluid ounce
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| canadian cup | c (CA) | ≡ 10 fl oz (imp) | = 284.130625×10−6 m3 | Imperial/US |
| canadian cups | imperial barrels | canadian cups | imperial barrels |
|---|---|---|---|
| 1 | = 0.0013888888888889 | 6 | = 0.0083333333333333 |
| 2 | = 0.0027777777777778 | 7 | = 0.0097222222222222 |
| 3 | = 0.0041666666666667 | 8 | = 0.011111111111111 |
| 4 | = 0.0055555555555556 | 9 | = 0.0125 |
| 5 | = 0.0069444444444444 | 10 | = 0.013888888888889 |
| imperial barrels | canadian cups |
|---|---|
| 1 | = 720 |
| 0.0013889 | = 1 |
| Symbol | Definition |
|---|---|
| ≡ | exactly equal |
| ≈ | approximately equal to |
| = | equal to |
| digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |