| Imperial fluid ounce | 1 fl oz (imp) | 2 fl oz (imp) | 3 fl oz (imp) | 4 fl oz (imp) | 5 fl oz (imp) | 6 fl oz (imp) | 7 fl oz (imp) | 8 fl oz (imp) | 9 fl oz (imp) | 10 fl oz (imp) | 11 fl oz (imp) | 12 fl oz (imp) | 13 fl oz (imp) | 14 fl oz (imp) | 15 fl oz (imp) | 16 fl oz (imp) | 17 fl oz (imp) | 18 fl oz (imp) | 19 fl oz (imp) | 20 fl oz (imp) | 21 fl oz (imp) | 22 fl oz (imp) | 23 fl oz (imp) | 24 fl oz (imp) | 25 fl oz (imp) | 26 fl oz (imp) | 27 fl oz (imp) | 28 fl oz (imp) | 29 fl oz (imp) | 30 fl oz (imp) | 31 fl oz (imp) | 32 fl oz (imp) | 33 fl oz (imp) | 34 fl oz (imp) | 35 fl oz (imp) | 36 fl oz (imp) | 37 fl oz (imp) | 38 fl oz (imp) | 39 fl oz (imp) | 40 fl oz (imp) | 41 fl oz (imp) | 42 fl oz (imp) | 43 fl oz (imp) | 44 fl oz (imp) | 45 fl oz (imp) | 46 fl oz (imp) | 47 fl oz (imp) | 48 fl oz (imp) | 49 fl oz (imp) | 50 fl oz (imp) | 51 fl oz (imp) | 52 fl oz (imp) | 53 fl oz (imp) | 54 fl oz (imp) | 55 fl oz (imp) | 56 fl oz (imp) | 57 fl oz (imp) | 58 fl oz (imp) | 59 fl oz (imp) | 60 fl oz (imp) | 61 fl oz (imp) | 62 fl oz (imp) | 63 fl oz (imp) | 64 fl oz (imp) | 65 fl oz (imp) | 66 fl oz (imp) | 67 fl oz (imp) | 68 fl oz (imp) | 69 fl oz (imp) | 70 fl oz (imp) | 71 fl oz (imp) | 72 fl oz (imp) | 73 fl oz (imp) | 74 fl oz (imp) | 75 fl oz (imp) | 76 fl oz (imp) | 77 fl oz (imp) | 78 fl oz (imp) | 79 fl oz (imp) | 80 fl oz (imp) | 81 fl oz (imp) | 82 fl oz (imp) | 83 fl oz (imp) | 84 fl oz (imp) | 85 fl oz (imp) | 86 fl oz (imp) | 87 fl oz (imp) | 88 fl oz (imp) | 89 fl oz (imp) | 90 fl oz (imp) | 91 fl oz (imp) | 92 fl oz (imp) | 93 fl oz (imp) | 94 fl oz (imp) | 95 fl oz (imp) | 96 fl oz (imp) | 97 fl oz (imp) | 98 fl oz (imp) | 99 fl oz (imp) | 100 fl oz (imp) |
| canadian cup | 0.125 c (CA) | 0.25 c (CA) | 0.375 c (CA) | 0.5 c (CA) | 0.625 c (CA) | 0.75 c (CA) | 0.875 c (CA) | 1 c (CA) | 1.125 c (CA) | 1.25 c (CA) | 1.375 c (CA) | 1.5 c (CA) | 1.625 c (CA) | 1.75 c (CA) | 1.875 c (CA) | 2 c (CA) | 2.125 c (CA) | 2.25 c (CA) | 2.375 c (CA) | 2.5 c (CA) | 2.625 c (CA) | 2.75 c (CA) | 2.875 c (CA) | 3 c (CA) | 3.125 c (CA) | 3.25 c (CA) | 3.375 c (CA) | 3.5 c (CA) | 3.625 c (CA) | 3.75 c (CA) | 3.875 c (CA) | 4 c (CA) | 4.125 c (CA) | 4.25 c (CA) | 4.375 c (CA) | 4.5 c (CA) | 4.625 c (CA) | 4.75 c (CA) | 4.875 c (CA) | 5 c (CA) | 5.125 c (CA) | 5.25 c (CA) | 5.375 c (CA) | 5.5 c (CA) | 5.625 c (CA) | 5.75 c (CA) | 5.875 c (CA) | 6 c (CA) | 6.125 c (CA) | 6.25 c (CA) | 6.375 c (CA) | 6.5 c (CA) | 6.625 c (CA) | 6.75 c (CA) | 6.875 c (CA) | 7 c (CA) | 7.125 c (CA) | 7.25 c (CA) | 7.375 c (CA) | 7.5 c (CA) | 7.625 c (CA) | 7.75 c (CA) | 7.875 c (CA) | 8 c (CA) | 8.125 c (CA) | 8.25 c (CA) | 8.375 c (CA) | 8.5 c (CA) | 8.625 c (CA) | 8.75 c (CA) | 8.875 c (CA) | 9 c (CA) | 9.125 c (CA) | 9.25 c (CA) | 9.375 c (CA) | 9.5 c (CA) | 9.625 c (CA) | 9.75 c (CA) | 9.875 c (CA) | 10 c (CA) | 10.125 c (CA) | 10.25 c (CA) | 10.375 c (CA) | 10.5 c (CA) | 10.625 c (CA) | 10.75 c (CA) | 10.875 c (CA) | 11 c (CA) | 11.125 c (CA) | 11.25 c (CA) | 11.375 c (CA) | 11.5 c (CA) | 11.625 c (CA) | 11.75 c (CA) | 11.875 c (CA) | 12 c (CA) | 12.125 c (CA) | 12.25 c (CA) | 12.375 c (CA) | 12.5 c (CA) |
A fluid ounce (abbreviated fl oz, fl. oz. or oz. fl., old forms ℥, fl ℥, f℥, ƒ ℥) is a unit of volume (also called capacity) typically used for measuring liquids. Various definitions have been used throughout history, but only two are still in common use: the British Imperial and the United States customary fluid ounce. An imperial fluid ounce is 1⁄20 of an imperial pint, 1⁄160 of an imperial gallon or approximately 28.4 ml. A US fluid ounce is 1⁄16 of a US fluid pint and 1⁄128 of a US liquid gallon or approximately 29.57 ml, making it about 4% larger than the imperial fluid ounce.
Imperial fluid ounce
| 1 imperial fluid ounce | = | 1⁄160 | imperial gallon |
| = | 1⁄40 | imperial quart | |
| = | 1⁄20 | imperial pint | |
| = | 1⁄5 | imperial gill | |
| = | 8 | imperial fluid drams | |
| = | 28.4130625 | millilitres | |
| ≈ | 1.733871455 | cubic inches | |
| ≈ | 0.960759940 | US fluid ounces | |
| ≈ | the volume of 1 avoirdupois ounce of water | ||
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| Imperial fluid ounce | fl oz (imp) | ≡ 1⁄160 gal (imp) | ≡ 28.4130625×10−6 m3 | Imperial/US |
| Imperial fluid ounces | canadian cups | Imperial fluid ounces | canadian cups |
|---|---|---|---|
| 1 | = 0.125 | 6 | = 0.75 |
| 2 | = 0.25 | 7 | = 0.875 |
| 3 | = 0.375 | 8 | = 1 |
| 4 | = 0.5 | 9 | = 1.125 |
| 5 | = 0.625 | 10 | = 1.25 |
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 fluid ounces | canadian cups | Imperial fluid ounces |
|---|---|---|---|
| 1 | = 8 | 6 | = 48 |
| 2 | = 16 | 7 | = 56 |
| 3 | = 24 | 8 | = 64 |
| 4 | = 32 | 9 | = 72 |
| 5 | = 40 | 10 | = 80 |
| Imperial fluid ounces | canadian cups |
|---|---|
| 1 | = 0.125 |
| 8 | = 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 …) |