| metric cup | 1 c | 2 c | 3 c | 4 c | 5 c | 6 c | 7 c | 8 c | 9 c | 10 c | 11 c | 12 c | 13 c | 14 c | 15 c | 16 c | 17 c | 18 c | 19 c | 20 c | 21 c | 22 c | 23 c | 24 c | 25 c | 26 c | 27 c | 28 c | 29 c | 30 c | 31 c | 32 c | 33 c | 34 c | 35 c | 36 c | 37 c | 38 c | 39 c | 40 c | 41 c | 42 c | 43 c | 44 c | 45 c | 46 c | 47 c | 48 c | 49 c | 50 c | 51 c | 52 c | 53 c | 54 c | 55 c | 56 c | 57 c | 58 c | 59 c | 60 c | 61 c | 62 c | 63 c | 64 c | 65 c | 66 c | 67 c | 68 c | 69 c | 70 c | 71 c | 72 c | 73 c | 74 c | 75 c | 76 c | 77 c | 78 c | 79 c | 80 c | 81 c | 82 c | 83 c | 84 c | 85 c | 86 c | 87 c | 88 c | 89 c | 90 c | 91 c | 92 c | 93 c | 94 c | 95 c | 96 c | 97 c | 98 c | 99 c | 100 c |
| US legal cup | 1.0416667 c (US Legal) | 2.0833333 c (US Legal) | 3.125 c (US Legal) | 4.1666667 c (US Legal) | 5.2083333 c (US Legal) | 6.25 c (US Legal) | 7.2916667 c (US Legal) | 8.3333333 c (US Legal) | 9.375 c (US Legal) | 10.4166667 c (US Legal) | 11.4583333 c (US Legal) | 12.5 c (US Legal) | 13.5416667 c (US Legal) | 14.5833333 c (US Legal) | 15.625 c (US Legal) | 16.6666667 c (US Legal) | 17.7083333 c (US Legal) | 18.75 c (US Legal) | 19.7916667 c (US Legal) | 20.8333333 c (US Legal) | 21.875 c (US Legal) | 22.9166667 c (US Legal) | 23.9583333 c (US Legal) | 25 c (US Legal) | 26.0416667 c (US Legal) | 27.0833333 c (US Legal) | 28.125 c (US Legal) | 29.1666667 c (US Legal) | 30.2083333 c (US Legal) | 31.25 c (US Legal) | 32.2916667 c (US Legal) | 33.3333333 c (US Legal) | 34.375 c (US Legal) | 35.4166667 c (US Legal) | 36.4583333 c (US Legal) | 37.5 c (US Legal) | 38.5416667 c (US Legal) | 39.5833333 c (US Legal) | 40.625 c (US Legal) | 41.6666667 c (US Legal) | 42.7083333 c (US Legal) | 43.75 c (US Legal) | 44.7916667 c (US Legal) | 45.8333333 c (US Legal) | 46.875 c (US Legal) | 47.9166667 c (US Legal) | 48.9583333 c (US Legal) | 50 c (US Legal) | 51.0416667 c (US Legal) | 52.0833333 c (US Legal) | 53.125 c (US Legal) | 54.1666667 c (US Legal) | 55.2083333 c (US Legal) | 56.25 c (US Legal) | 57.2916667 c (US Legal) | 58.3333333 c (US Legal) | 59.375 c (US Legal) | 60.4166667 c (US Legal) | 61.4583333 c (US Legal) | 62.5 c (US Legal) | 63.5416667 c (US Legal) | 64.5833333 c (US Legal) | 65.625 c (US Legal) | 66.6666667 c (US Legal) | 67.7083333 c (US Legal) | 68.75 c (US Legal) | 69.7916667 c (US Legal) | 70.8333333 c (US Legal) | 71.875 c (US Legal) | 72.9166667 c (US Legal) | 73.9583333 c (US Legal) | 75 c (US Legal) | 76.0416667 c (US Legal) | 77.0833333 c (US Legal) | 78.125 c (US Legal) | 79.1666667 c (US Legal) | 80.2083333 c (US Legal) | 81.25 c (US Legal) | 82.2916667 c (US Legal) | 83.3333333 c (US Legal) | 84.375 c (US Legal) | 85.4166667 c (US Legal) | 86.4583333 c (US Legal) | 87.5 c (US Legal) | 88.5416667 c (US Legal) | 89.5833333 c (US Legal) | 90.625 c (US Legal) | 91.6666667 c (US Legal) | 92.7083333 c (US Legal) | 93.75 c (US Legal) | 94.7916667 c (US Legal) | 95.8333333 c (US Legal) | 96.875 c (US Legal) | 97.9166667 c (US Legal) | 98.9583333 c (US Legal) | 100 c (US Legal) | 101.0416667 c (US Legal) | 102.0833333 c (US Legal) | 103.125 c (US Legal) | 104.1666667 c (US Legal) |
Australia, Canada, New Zealand, and some other members of the Commonwealth of Nations—being former British colonies that have since metricated—employ a "metric cup" of 250 millilitres. Although derived from the metric system, it is not an official metric unit.
| 1 cup | = | 250 | millilitres |
| = | 16 2⁄3 | international tablespoons (15 ml each) | |
| = | 12.5 | Australian tablespoons (20 ml each) | |
| ≈ | 8.80 | imperial fluid ounces | |
| ≈ | 8.45 | U.S. customary fluid ounces |
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| metric cup | c | = 250.0×10−6 m3 | ≡ 250.0×10−6 m3 | Imperial/US |
| metric cups | US legal cups | metric cups | US legal cups |
|---|---|---|---|
| 1 | = 1.0416666666667 | 6 | = 6.25 |
| 2 | = 2.0833333333333 | 7 | = 7.2916666666667 |
| 3 | = 3.125 | 8 | = 8.3333333333333 |
| 4 | = 4.1666666666667 | 9 | = 9.375 |
| 5 | = 5.2083333333333 | 10 | = 10.416666666667 |
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 | metric cups | US legal cups | metric cups |
|---|---|---|---|
| 1 | = 0.96 | 6 | = 5.76 |
| 2 | = 1.92 | 7 | = 6.72 |
| 3 | = 2.88 | 8 | = 7.68 |
| 4 | = 3.84 | 9 | = 8.64 |
| 5 | = 4.8 | 10 | = 9.6 |
| metric cups | US legal cups |
|---|---|
| 1 | = 1.0416667 |
| 0.96 | = 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 …) |