| imperial cup | 1 c (imp) | 2 c (imp) | 3 c (imp) | 4 c (imp) | 5 c (imp) | 6 c (imp) | 7 c (imp) | 8 c (imp) | 9 c (imp) | 10 c (imp) | 11 c (imp) | 12 c (imp) | 13 c (imp) | 14 c (imp) | 15 c (imp) | 16 c (imp) | 17 c (imp) | 18 c (imp) | 19 c (imp) | 20 c (imp) | 21 c (imp) | 22 c (imp) | 23 c (imp) | 24 c (imp) | 25 c (imp) | 26 c (imp) | 27 c (imp) | 28 c (imp) | 29 c (imp) | 30 c (imp) | 31 c (imp) | 32 c (imp) | 33 c (imp) | 34 c (imp) | 35 c (imp) | 36 c (imp) | 37 c (imp) | 38 c (imp) | 39 c (imp) | 40 c (imp) | 41 c (imp) | 42 c (imp) | 43 c (imp) | 44 c (imp) | 45 c (imp) | 46 c (imp) | 47 c (imp) | 48 c (imp) | 49 c (imp) | 50 c (imp) | 51 c (imp) | 52 c (imp) | 53 c (imp) | 54 c (imp) | 55 c (imp) | 56 c (imp) | 57 c (imp) | 58 c (imp) | 59 c (imp) | 60 c (imp) | 61 c (imp) | 62 c (imp) | 63 c (imp) | 64 c (imp) | 65 c (imp) | 66 c (imp) | 67 c (imp) | 68 c (imp) | 69 c (imp) | 70 c (imp) | 71 c (imp) | 72 c (imp) | 73 c (imp) | 74 c (imp) | 75 c (imp) | 76 c (imp) | 77 c (imp) | 78 c (imp) | 79 c (imp) | 80 c (imp) | 81 c (imp) | 82 c (imp) | 83 c (imp) | 84 c (imp) | 85 c (imp) | 86 c (imp) | 87 c (imp) | 88 c (imp) | 89 c (imp) | 90 c (imp) | 91 c (imp) | 92 c (imp) | 93 c (imp) | 94 c (imp) | 95 c (imp) | 96 c (imp) | 97 c (imp) | 98 c (imp) | 99 c (imp) | 100 c (imp) |
| US legal cup | 1.1838776 c (US Legal) | 2.3677552 c (US Legal) | 3.5516328 c (US Legal) | 4.7355104 c (US Legal) | 5.9193880 c (US Legal) | 7.1032656 c (US Legal) | 8.2871432 c (US Legal) | 9.4710208 c (US Legal) | 10.6548984 c (US Legal) | 11.8387760 c (US Legal) | 13.0226536 c (US Legal) | 14.2065313 c (US Legal) | 15.3904089 c (US Legal) | 16.5742865 c (US Legal) | 17.7581641 c (US Legal) | 18.9420417 c (US Legal) | 20.1259193 c (US Legal) | 21.3097969 c (US Legal) | 22.4936745 c (US Legal) | 23.6775521 c (US Legal) | 24.8614297 c (US Legal) | 26.0453073 c (US Legal) | 27.2291849 c (US Legal) | 28.4130625 c (US Legal) | 29.5969401 c (US Legal) | 30.7808177 c (US Legal) | 31.9646953 c (US Legal) | 33.1485729 c (US Legal) | 34.3324505 c (US Legal) | 35.5163281 c (US Legal) | 36.7002057 c (US Legal) | 37.8840833 c (US Legal) | 39.0679609 c (US Legal) | 40.2518385 c (US Legal) | 41.4357161 c (US Legal) | 42.6195938 c (US Legal) | 43.8034714 c (US Legal) | 44.9873490 c (US Legal) | 46.1712266 c (US Legal) | 47.3551042 c (US Legal) | 48.5389818 c (US Legal) | 49.7228594 c (US Legal) | 50.9067370 c (US Legal) | 52.0906146 c (US Legal) | 53.2744922 c (US Legal) | 54.4583698 c (US Legal) | 55.6422474 c (US Legal) | 56.826125 c (US Legal) | 58.0100026 c (US Legal) | 59.1938802 c (US Legal) | 60.3777578 c (US Legal) | 61.5616354 c (US Legal) | 62.7455130 c (US Legal) | 63.9293906 c (US Legal) | 65.1132682 c (US Legal) | 66.2971458 c (US Legal) | 67.4810234 c (US Legal) | 68.6649010 c (US Legal) | 69.8487786 c (US Legal) | 71.0326563 c (US Legal) | 72.2165339 c (US Legal) | 73.4004115 c (US Legal) | 74.5842891 c (US Legal) | 75.7681667 c (US Legal) | 76.9520443 c (US Legal) | 78.1359219 c (US Legal) | 79.3197995 c (US Legal) | 80.5036771 c (US Legal) | 81.6875547 c (US Legal) | 82.8714323 c (US Legal) | 84.0553099 c (US Legal) | 85.2391875 c (US Legal) | 86.4230651 c (US Legal) | 87.6069427 c (US Legal) | 88.7908203 c (US Legal) | 89.9746979 c (US Legal) | 91.1585755 c (US Legal) | 92.3424531 c (US Legal) | 93.5263307 c (US Legal) | 94.7102083 c (US Legal) | 95.8940859 c (US Legal) | 97.0779635 c (US Legal) | 98.2618411 c (US Legal) | 99.4457188 c (US Legal) | 100.6295964 c (US Legal) | 101.8134740 c (US Legal) | 102.9973516 c (US Legal) | 104.1812292 c (US Legal) | 105.3651068 c (US Legal) | 106.5489844 c (US Legal) | 107.7328620 c (US Legal) | 108.9167396 c (US Legal) | 110.1006172 c (US Legal) | 111.2844948 c (US Legal) | 112.4683724 c (US Legal) | 113.65225 c (US Legal) | 114.8361276 c (US Legal) | 116.0200052 c (US Legal) | 117.2038828 c (US Legal) | 118.3877604 c (US Legal) |
The official imperial cup was half an imperial pint or 10 imperial fluid ounces. It is no longer in common use, but appears in older recipe books.
| 1 imperial cup | = | 0.5 | imperial pints |
| = | 2 | imperial gills | |
| = | 10 | imperial fluid ounces | |
| ≈ | 284 | millilitres | |
| ≈ | 19 | international tablespoons | |
| ≈ | 14.25 | Australian tablespoons | |
| ≈ | 1.20 | U.S. customary cups | |
| ≈ | 9.61 | U.S. customary fluid ounces |
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| imperial cup | c (imp) | ≡ 10 fl oz (imp) | = 284.130625×10−6 m3 | Imperial/US |
| imperial cups | US legal cups | imperial cups | US legal cups |
|---|---|---|---|
| 1 | = 1.1838776041667 | 6 | = 7.103265625 |
| 2 | = 2.3677552083333 | 7 | = 8.2871432291667 |
| 3 | = 3.5516328125 | 8 | = 9.4710208333333 |
| 4 | = 4.7355104166667 | 9 | = 10.6548984375 |
| 5 | = 5.9193880208333 | 10 | = 11.838776041667 |
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 cups | US legal cups | imperial cups |
|---|---|---|---|
| 1 | = 0.8446819134685 | 6 | = 5.068091480811 |
| 2 | = 1.689363826937 | 7 | = 5.9127733942795 |
| 3 | = 2.5340457404055 | 8 | = 6.757455307748 |
| 4 | = 3.378727653874 | 9 | = 7.6021372212165 |
| 5 | = 4.2234095673425 | 10 | = 8.446819134685 |
| imperial cups | US legal cups |
|---|---|
| 1 | = 1.1838776 |
| 0.8446819 | = 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 …) |