| US legal cup | 1 c (US Legal) | 2 c (US Legal) | 3 c (US Legal) | 4 c (US Legal) | 5 c (US Legal) | 6 c (US Legal) | 7 c (US Legal) | 8 c (US Legal) | 9 c (US Legal) | 10 c (US Legal) | 11 c (US Legal) | 12 c (US Legal) | 13 c (US Legal) | 14 c (US Legal) | 15 c (US Legal) | 16 c (US Legal) | 17 c (US Legal) | 18 c (US Legal) | 19 c (US Legal) | 20 c (US Legal) | 21 c (US Legal) | 22 c (US Legal) | 23 c (US Legal) | 24 c (US Legal) | 25 c (US Legal) | 26 c (US Legal) | 27 c (US Legal) | 28 c (US Legal) | 29 c (US Legal) | 30 c (US Legal) | 31 c (US Legal) | 32 c (US Legal) | 33 c (US Legal) | 34 c (US Legal) | 35 c (US Legal) | 36 c (US Legal) | 37 c (US Legal) | 38 c (US Legal) | 39 c (US Legal) | 40 c (US Legal) | 41 c (US Legal) | 42 c (US Legal) | 43 c (US Legal) | 44 c (US Legal) | 45 c (US Legal) | 46 c (US Legal) | 47 c (US Legal) | 48 c (US Legal) | 49 c (US Legal) | 50 c (US Legal) | 51 c (US Legal) | 52 c (US Legal) | 53 c (US Legal) | 54 c (US Legal) | 55 c (US Legal) | 56 c (US Legal) | 57 c (US Legal) | 58 c (US Legal) | 59 c (US Legal) | 60 c (US Legal) | 61 c (US Legal) | 62 c (US Legal) | 63 c (US Legal) | 64 c (US Legal) | 65 c (US Legal) | 66 c (US Legal) | 67 c (US Legal) | 68 c (US Legal) | 69 c (US Legal) | 70 c (US Legal) | 71 c (US Legal) | 72 c (US Legal) | 73 c (US Legal) | 74 c (US Legal) | 75 c (US Legal) | 76 c (US Legal) | 77 c (US Legal) | 78 c (US Legal) | 79 c (US Legal) | 80 c (US Legal) | 81 c (US Legal) | 82 c (US Legal) | 83 c (US Legal) | 84 c (US Legal) | 85 c (US Legal) | 86 c (US Legal) | 87 c (US Legal) | 88 c (US Legal) | 89 c (US Legal) | 90 c (US Legal) | 91 c (US Legal) | 92 c (US Legal) | 93 c (US Legal) | 94 c (US Legal) | 95 c (US Legal) | 96 c (US Legal) | 97 c (US Legal) | 98 c (US Legal) | 99 c (US Legal) | 100 c (US Legal) |
| Imperial fluid ounce | 8.4468191 fl oz (imp) | 16.8936383 fl oz (imp) | 25.3404574 fl oz (imp) | 33.7872765 fl oz (imp) | 42.2340957 fl oz (imp) | 50.6809148 fl oz (imp) | 59.1277339 fl oz (imp) | 67.5745531 fl oz (imp) | 76.0213722 fl oz (imp) | 84.4681913 fl oz (imp) | 92.9150105 fl oz (imp) | 101.3618296 fl oz (imp) | 109.8086488 fl oz (imp) | 118.2554679 fl oz (imp) | 126.7022870 fl oz (imp) | 135.1491062 fl oz (imp) | 143.5959253 fl oz (imp) | 152.0427444 fl oz (imp) | 160.4895636 fl oz (imp) | 168.9363827 fl oz (imp) | 177.3832018 fl oz (imp) | 185.8300210 fl oz (imp) | 194.2768401 fl oz (imp) | 202.7236592 fl oz (imp) | 211.1704784 fl oz (imp) | 219.6172975 fl oz (imp) | 228.0641166 fl oz (imp) | 236.5109358 fl oz (imp) | 244.9577549 fl oz (imp) | 253.4045740 fl oz (imp) | 261.8513932 fl oz (imp) | 270.2982123 fl oz (imp) | 278.7450314 fl oz (imp) | 287.1918506 fl oz (imp) | 295.6386697 fl oz (imp) | 304.0854888 fl oz (imp) | 312.5323080 fl oz (imp) | 320.9791271 fl oz (imp) | 329.4259463 fl oz (imp) | 337.8727654 fl oz (imp) | 346.3195845 fl oz (imp) | 354.7664037 fl oz (imp) | 363.2132228 fl oz (imp) | 371.6600419 fl oz (imp) | 380.1068611 fl oz (imp) | 388.5536802 fl oz (imp) | 397.0004993 fl oz (imp) | 405.4473185 fl oz (imp) | 413.8941376 fl oz (imp) | 422.3409567 fl oz (imp) | 430.7877759 fl oz (imp) | 439.2345950 fl oz (imp) | 447.6814141 fl oz (imp) | 456.1282333 fl oz (imp) | 464.5750524 fl oz (imp) | 473.0218715 fl oz (imp) | 481.4686907 fl oz (imp) | 489.9155098 fl oz (imp) | 498.3623289 fl oz (imp) | 506.8091481 fl oz (imp) | 515.2559672 fl oz (imp) | 523.7027864 fl oz (imp) | 532.1496055 fl oz (imp) | 540.5964246 fl oz (imp) | 549.0432438 fl oz (imp) | 557.4900629 fl oz (imp) | 565.9368820 fl oz (imp) | 574.3837012 fl oz (imp) | 582.8305203 fl oz (imp) | 591.2773394 fl oz (imp) | 599.7241586 fl oz (imp) | 608.1709777 fl oz (imp) | 616.6177968 fl oz (imp) | 625.0646160 fl oz (imp) | 633.5114351 fl oz (imp) | 641.9582542 fl oz (imp) | 650.4050734 fl oz (imp) | 658.8518925 fl oz (imp) | 667.2987116 fl oz (imp) | 675.7455308 fl oz (imp) | 684.1923499 fl oz (imp) | 692.6391690 fl oz (imp) | 701.0859882 fl oz (imp) | 709.5328073 fl oz (imp) | 717.9796264 fl oz (imp) | 726.4264456 fl oz (imp) | 734.8732647 fl oz (imp) | 743.3200839 fl oz (imp) | 751.7669030 fl oz (imp) | 760.2137221 fl oz (imp) | 768.6605413 fl oz (imp) | 777.1073604 fl oz (imp) | 785.5541795 fl oz (imp) | 794.0009987 fl oz (imp) | 802.4478178 fl oz (imp) | 810.8946369 fl oz (imp) | 819.3414561 fl oz (imp) | 827.7882752 fl oz (imp) | 836.2350943 fl oz (imp) | 844.6819135 fl oz (imp) |
The cup currently used in the United States for nutrition labelling is defined in United States law as 240 ml.
| 1 U.S. "legal" cup | = | 240 | millilitres |
| = | 16 | international tablespoons | |
| = | 12 | Australian tablespoons | |
| ≈ | 8.12 | U.S. customary fluid ounces | |
| ≈ | 8.45 | imperial fluid ounces |
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| US legal cup | c (US Legal) | ≡ 240 mL | = 2.4×10−4 m3 | Imperial/US |
| US legal cups | Imperial fluid ounces | US legal cups | Imperial fluid ounces |
|---|---|---|---|
| 1 | = 8.446819134685 | 6 | = 50.68091480811 |
| 2 | = 16.89363826937 | 7 | = 59.127733942795 |
| 3 | = 25.340457404055 | 8 | = 67.57455307748 |
| 4 | = 33.78727653874 | 9 | = 76.021372212165 |
| 5 | = 42.234095673425 | 10 | = 84.46819134685 |
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 | US legal cups | Imperial fluid ounces | US legal cups |
|---|---|---|---|
| 1 | = 0.11838776041667 | 6 | = 0.7103265625 |
| 2 | = 0.23677552083333 | 7 | = 0.82871432291667 |
| 3 | = 0.35516328125 | 8 | = 0.94710208333333 |
| 4 | = 0.47355104166667 | 9 | = 1.06548984375 |
| 5 | = 0.59193880208333 | 10 | = 1.1838776041667 |
| US legal cups | Imperial fluid ounces |
|---|---|
| 1 | = 8.4468191 |
| 0.1183878 | = 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 …) |