| US cup | 1 c (US) | 2 c (US) | 3 c (US) | 4 c (US) | 5 c (US) | 6 c (US) | 7 c (US) | 8 c (US) | 9 c (US) | 10 c (US) | 11 c (US) | 12 c (US) | 13 c (US) | 14 c (US) | 15 c (US) | 16 c (US) | 17 c (US) | 18 c (US) | 19 c (US) | 20 c (US) | 21 c (US) | 22 c (US) | 23 c (US) | 24 c (US) | 25 c (US) | 26 c (US) | 27 c (US) | 28 c (US) | 29 c (US) | 30 c (US) | 31 c (US) | 32 c (US) | 33 c (US) | 34 c (US) | 35 c (US) | 36 c (US) | 37 c (US) | 38 c (US) | 39 c (US) | 40 c (US) | 41 c (US) | 42 c (US) | 43 c (US) | 44 c (US) | 45 c (US) | 46 c (US) | 47 c (US) | 48 c (US) | 49 c (US) | 50 c (US) | 51 c (US) | 52 c (US) | 53 c (US) | 54 c (US) | 55 c (US) | 56 c (US) | 57 c (US) | 58 c (US) | 59 c (US) | 60 c (US) | 61 c (US) | 62 c (US) | 63 c (US) | 64 c (US) | 65 c (US) | 66 c (US) | 67 c (US) | 68 c (US) | 69 c (US) | 70 c (US) | 71 c (US) | 72 c (US) | 73 c (US) | 74 c (US) | 75 c (US) | 76 c (US) | 77 c (US) | 78 c (US) | 79 c (US) | 80 c (US) | 81 c (US) | 82 c (US) | 83 c (US) | 84 c (US) | 85 c (US) | 86 c (US) | 87 c (US) | 88 c (US) | 89 c (US) | 90 c (US) | 91 c (US) | 92 c (US) | 93 c (US) | 94 c (US) | 95 c (US) | 96 c (US) | 97 c (US) | 98 c (US) | 99 c (US) | 100 c (US) |
| US fluid ounce | 8 US fl oz | 16 US fl oz | 24 US fl oz | 32 US fl oz | 40 US fl oz | 48 US fl oz | 56 US fl oz | 64 US fl oz | 72 US fl oz | 80 US fl oz | 88 US fl oz | 96 US fl oz | 104 US fl oz | 112 US fl oz | 120 US fl oz | 128 US fl oz | 136 US fl oz | 144 US fl oz | 152 US fl oz | 160 US fl oz | 168 US fl oz | 176 US fl oz | 184 US fl oz | 192 US fl oz | 200 US fl oz | 208 US fl oz | 216 US fl oz | 224 US fl oz | 232 US fl oz | 240 US fl oz | 248 US fl oz | 256 US fl oz | 264 US fl oz | 272 US fl oz | 280 US fl oz | 288 US fl oz | 296 US fl oz | 304 US fl oz | 312 US fl oz | 320 US fl oz | 328 US fl oz | 336 US fl oz | 344 US fl oz | 352 US fl oz | 360 US fl oz | 368 US fl oz | 376 US fl oz | 384 US fl oz | 392 US fl oz | 400 US fl oz | 408 US fl oz | 416 US fl oz | 424 US fl oz | 432 US fl oz | 440 US fl oz | 448 US fl oz | 456 US fl oz | 464 US fl oz | 472 US fl oz | 480 US fl oz | 488 US fl oz | 496 US fl oz | 504 US fl oz | 512 US fl oz | 520 US fl oz | 528 US fl oz | 536 US fl oz | 544 US fl oz | 552 US fl oz | 560 US fl oz | 568 US fl oz | 576 US fl oz | 584 US fl oz | 592 US fl oz | 600 US fl oz | 608 US fl oz | 616 US fl oz | 624 US fl oz | 632 US fl oz | 640 US fl oz | 648 US fl oz | 656 US fl oz | 664 US fl oz | 672 US fl oz | 680 US fl oz | 688 US fl oz | 696 US fl oz | 704 US fl oz | 712 US fl oz | 720 US fl oz | 728 US fl oz | 736 US fl oz | 744 US fl oz | 752 US fl oz | 760 US fl oz | 768 US fl oz | 776 US fl oz | 784 US fl oz | 792 US fl oz | 800 US fl oz |
In the United States, the customary cup is half of a liquid pint.
| 1 U.S. customary cup | = | 1⁄16 | U.S. customary gallon |
| = | 1⁄4 | U.S. customary quart | |
| = | 1⁄2 | U.S. customary pint | |
| = | 8 | U.S. customary fluid ounces | |
| = | 16 | U.S. customary tablespoons | |
| = | 48 | U.S. customary teaspoons | |
| ≡ | 236.5882365 | millilitres exactly | |
| ≈ | 15 2⁄3 | international tablespoons | |
| ≈ | 11.75 | Australian tablespoons | |
| ≈ | 0.833 | imperial cups | |
| ≈ | 8.33 | imperial fluid ounces |
| 1 US cups = 8 US fluid ounces | 6 US cups = 48 US fluid ounces |
| 2 US cups = 16 US fluid ounces | 7 US cups = 56 US fluid ounces |
| 3 US cups = 24 US fluid ounces | 8 US cups = 64 US fluid ounces |
| 4 US cups = 32 US fluid ounces | 9 US cups = 72 US fluid ounces |
| 5 US cups = 40 US fluid ounces | 10 US cups = 80 US fluid ounces |
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.
US customary fluid ounce
| 1 US fluid ounce | = | 1⁄128 | US gallon |
| = | 1⁄32 | US quart | |
| = | 1⁄16 | US pint | |
| = | 1⁄8 | US cup | |
| = | 1⁄4 | US gill | |
| = | 2 | US tablespoons | |
| = | 6 | US teaspoons | |
| = | 8 | US fluid drams | |
| = | 1.8046875 | cubic inches | |
| = | 29.5735295625 | millilitres | |
| ≈ | 1.040842731 | imperial fluid ounces |
| 1 US fluid ounces = 0.125 US cups | 6 US fluid ounces = 0.75 US cups |
| 2 US fluid ounces = 0.25 US cups | 7 US fluid ounces = 0.875 US cups |
| 3 US fluid ounces = 0.375 US cups | 8 US fluid ounces = 1 US cups |
| 4 US fluid ounces = 0.5 US cups | 9 US fluid ounces = 1.125 US cups |
| 5 US fluid ounces = 0.625 US cups | 10 US fluid ounces = 1.25 US cups |
| 1 US cups = 8 US fluid ounces |
| 1 US fluid ounces = 0.125 US cups |