| 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) |
| attoliter | 2.365882365 × 1017 aL | 4.73176473 × 1017 aL | 7.097647095 × 1017 aL | 9.46352946 × 1017 aL | 1.1829411825 × 1018 aL | 1.419529419 × 1018 aL | 1.6561176555 × 1018 aL | 1.892705892 × 1018 aL | 2.1292941285 × 1018 aL | 2.365882365 × 1018 aL | 2.6024706015 × 1018 aL | 2.839058838 × 1018 aL | 3.0756470745 × 1018 aL | 3.312235311 × 1018 aL | 3.5488235475 × 1018 aL | 3.785411784 × 1018 aL | 4.0220000205 × 1018 aL | 4.258588257 × 1018 aL | 4.4951764935 × 1018 aL | 4.73176473 × 1018 aL | 4.9683529665 × 1018 aL | 5.204941203 × 1018 aL | 5.4415294395 × 1018 aL | 5.678117676 × 1018 aL | 5.9147059125 × 1018 aL | 6.151294149 × 1018 aL | 6.3878823855 × 1018 aL | 6.624470622 × 1018 aL | 6.8610588585 × 1018 aL | 7.097647095 × 1018 aL | 7.3342353315 × 1018 aL | 7.570823568 × 1018 aL | 7.8074118045 × 1018 aL | 8.044000041 × 1018 aL | 8.2805882775 × 1018 aL | 8.517176514 × 1018 aL | 8.7537647505 × 1018 aL | 8.990352987 × 1018 aL | 9.2269412235 × 1018 aL | 9.46352946 × 1018 aL | 9.7001176965 × 1018 aL | 9.936705933 × 1018 aL | 1.01732941695 × 1019 aL | 1.0409882406 × 1019 aL | 1.06464706425 × 1019 aL | 1.0883058879 × 1019 aL | 1.11196471155 × 1019 aL | 1.1356235352 × 1019 aL | 1.15928235885 × 1019 aL | 1.1829411825 × 1019 aL | 1.20660000615 × 1019 aL | 1.2302588298 × 1019 aL | 1.25391765345 × 1019 aL | 1.2775764771 × 1019 aL | 1.30123530075 × 1019 aL | 1.3248941244 × 1019 aL | 1.34855294805 × 1019 aL | 1.3722117717 × 1019 aL | 1.39587059535 × 1019 aL | 1.419529419 × 1019 aL | 1.44318824265 × 1019 aL | 1.4668470663 × 1019 aL | 1.49050588995 × 1019 aL | 1.5141647136 × 1019 aL | 1.53782353725 × 1019 aL | 1.5614823609 × 1019 aL | 1.58514118455 × 1019 aL | 1.6088000082 × 1019 aL | 1.63245883185 × 1019 aL | 1.6561176555 × 1019 aL | 1.67977647915 × 1019 aL | 1.7034353028 × 1019 aL | 1.72709412645 × 1019 aL | 1.7507529501 × 1019 aL | 1.77441177375 × 1019 aL | 1.7980705974 × 1019 aL | 1.82172942105 × 1019 aL | 1.8453882447 × 1019 aL | 1.86904706835 × 1019 aL | 1.892705892 × 1019 aL | 1.91636471565 × 1019 aL | 1.9400235393 × 1019 aL | 1.96368236295 × 1019 aL | 1.9873411866 × 1019 aL | 2.01100001025 × 1019 aL | 2.0346588339 × 1019 aL | 2.05831765755 × 1019 aL | 2.0819764812 × 1019 aL | 2.10563530485 × 1019 aL | 2.1292941285 × 1019 aL | 2.15295295215 × 1019 aL | 2.1766117758 × 1019 aL | 2.20027059945 × 1019 aL | 2.2239294231 × 1019 aL | 2.24758824675 × 1019 aL | 2.2712470704 × 1019 aL | 2.29490589405 × 1019 aL | 2.3185647177 × 1019 aL | 2.34222354135 × 1019 aL | 2.365882365 × 1019 aL |
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 = 2.365882365E+17 attoliters | 6 US cups = 1.419529419E+18 attoliters |
| 2 US cups = 4.73176473E+17 attoliters | 7 US cups = 1.6561176555E+18 attoliters |
| 3 US cups = 7.097647095E+17 attoliters | 8 US cups = 1.892705892E+18 attoliters |
| 4 US cups = 9.46352946E+17 attoliters | 9 US cups = 2.1292941285E+18 attoliters |
| 5 US cups = 1.1829411825E+18 attoliters | 10 US cups = 2.365882365E+18 attoliters |
The attoliter or attolitre is a common metric unit of volume. It is equal to 10-21 cubic meters. Plural name is attoliters.
| 1 attoliters = 4.2267528377304E-18 US cups | 6 attoliters = 2.5360517026382E-17 US cups |
| 2 attoliters = 8.4535056754607E-18 US cups | 7 attoliters = 2.9587269864113E-17 US cups |
| 3 attoliters = 1.2680258513191E-17 US cups | 8 attoliters = 3.3814022701843E-17 US cups |
| 4 attoliters = 1.6907011350921E-17 US cups | 9 attoliters = 3.8040775539573E-17 US cups |
| 5 attoliters = 2.1133764188652E-17 US cups | 10 attoliters = 4.2267528377304E-17 US cups |
| 1 US cups = 2.365882365 × 1017 attoliters |
| 1 attoliters = 4.2267528377304 × 10-18 US cups |