| 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) |
| pipe | 5.9570928844487 × 10-5 pipe | 0.0001191 pipe | 0.0001787 pipe | 0.0002383 pipe | 0.0002979 pipe | 0.0003574 pipe | 0.0004170 pipe | 0.0004766 pipe | 0.0005361 pipe | 0.0005957 pipe | 0.0006553 pipe | 0.0007149 pipe | 0.0007744 pipe | 0.0008340 pipe | 0.0008936 pipe | 0.0009531 pipe | 0.0010127 pipe | 0.0010723 pipe | 0.0011318 pipe | 0.0011914 pipe | 0.0012510 pipe | 0.0013106 pipe | 0.0013701 pipe | 0.0014297 pipe | 0.0014893 pipe | 0.0015488 pipe | 0.0016084 pipe | 0.0016680 pipe | 0.0017276 pipe | 0.0017871 pipe | 0.0018467 pipe | 0.0019063 pipe | 0.0019658 pipe | 0.0020254 pipe | 0.0020850 pipe | 0.0021446 pipe | 0.0022041 pipe | 0.0022637 pipe | 0.0023233 pipe | 0.0023828 pipe | 0.0024424 pipe | 0.0025020 pipe | 0.0025615 pipe | 0.0026211 pipe | 0.0026807 pipe | 0.0027403 pipe | 0.0027998 pipe | 0.0028594 pipe | 0.0029190 pipe | 0.0029785 pipe | 0.0030381 pipe | 0.0030977 pipe | 0.0031573 pipe | 0.0032168 pipe | 0.0032764 pipe | 0.0033360 pipe | 0.0033955 pipe | 0.0034551 pipe | 0.0035147 pipe | 0.0035743 pipe | 0.0036338 pipe | 0.0036934 pipe | 0.0037530 pipe | 0.0038125 pipe | 0.0038721 pipe | 0.0039317 pipe | 0.0039913 pipe | 0.0040508 pipe | 0.0041104 pipe | 0.0041700 pipe | 0.0042295 pipe | 0.0042891 pipe | 0.0043487 pipe | 0.0044082 pipe | 0.0044678 pipe | 0.0045274 pipe | 0.0045870 pipe | 0.0046465 pipe | 0.0047061 pipe | 0.0047657 pipe | 0.0048252 pipe | 0.0048848 pipe | 0.0049444 pipe | 0.0050040 pipe | 0.0050635 pipe | 0.0051231 pipe | 0.0051827 pipe | 0.0052422 pipe | 0.0053018 pipe | 0.0053614 pipe | 0.0054210 pipe | 0.0054805 pipe | 0.0055401 pipe | 0.0055997 pipe | 0.0056592 pipe | 0.0057188 pipe | 0.0057784 pipe | 0.0058380 pipe | 0.0058975 pipe | 0.0059571 pipe |
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 | pipes | Imperial fluid ounces | pipes |
|---|---|---|---|
| 1 | = 5.9570928844487E-5 | 6 | = 0.00035742557306692 |
| 2 | = 0.00011914185768897 | 7 | = 0.00041699650191141 |
| 3 | = 0.00017871278653346 | 8 | = 0.00047656743075589 |
| 4 | = 0.00023828371537795 | 9 | = 0.00053613835960038 |
| 5 | = 0.00029785464422243 | 10 | = 0.00059570928844487 |
The pipe was a measure of liquid volume equalling two hogsheads. This equated to 108 imperial gallons (490 l) for ale or 126 imperial gallons (570 l) for wine (also known as a butt).
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| pipe | ≡ 126 gal (wine) | = 0.476961884784 m3 | Imperial/US |
| pipes | Imperial fluid ounces | pipes | Imperial fluid ounces |
|---|---|---|---|
| 1 | = 16786.71156212 | 6 | = 100720.26937272 |
| 2 | = 33573.423124241 | 7 | = 117506.98093484 |
| 3 | = 50360.134686361 | 8 | = 134293.69249696 |
| 4 | = 67146.846248482 | 9 | = 151080.40405908 |
| 5 | = 83933.557810602 | 10 | = 167867.1156212 |
| Imperial fluid ounces | pipes |
|---|---|
| 1 | = 5.9570928844487 × 10-5 |
| 16,786.7115621 | = 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 …) |