| 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) |
| acre-foot | 2.3034844644727 × 10-7 ac ft | 4.6069689289455 × 10-7 ac ft | 6.9104533934182 × 10-7 ac ft | 9.213937857891 × 10-7 ac ft | 1.1517422322364 × 10-6 ac ft | 1.3820906786836 × 10-6 ac ft | 1.6124391251309 × 10-6 ac ft | 1.8427875715782 × 10-6 ac ft | 2.0731360180255 × 10-6 ac ft | 2.3034844644727 × 10-6 ac ft | 2.53383291092 × 10-6 ac ft | 2.7641813573673 × 10-6 ac ft | 2.9945298038146 × 10-6 ac ft | 3.2248782502618 × 10-6 ac ft | 3.4552266967091 × 10-6 ac ft | 3.6855751431564 × 10-6 ac ft | 3.9159235896037 × 10-6 ac ft | 4.1462720360509 × 10-6 ac ft | 4.3766204824982 × 10-6 ac ft | 4.6069689289455 × 10-6 ac ft | 4.8373173753928 × 10-6 ac ft | 5.06766582184 × 10-6 ac ft | 5.2980142682873 × 10-6 ac ft | 5.5283627147346 × 10-6 ac ft | 5.7587111611818 × 10-6 ac ft | 5.9890596076291 × 10-6 ac ft | 6.2194080540764 × 10-6 ac ft | 6.4497565005237 × 10-6 ac ft | 6.6801049469709 × 10-6 ac ft | 6.9104533934182 × 10-6 ac ft | 7.1408018398655 × 10-6 ac ft | 7.3711502863128 × 10-6 ac ft | 7.60149873276 × 10-6 ac ft | 7.8318471792073 × 10-6 ac ft | 8.0621956256546 × 10-6 ac ft | 8.2925440721019 × 10-6 ac ft | 8.5228925185491 × 10-6 ac ft | 8.7532409649964 × 10-6 ac ft | 8.9835894114437 × 10-6 ac ft | 9.213937857891 × 10-6 ac ft | 9.4442863043382 × 10-6 ac ft | 9.6746347507855 × 10-6 ac ft | 9.9049831972328 × 10-6 ac ft | 1.013533164368 × 10-5 ac ft | 1.0365680090127 × 10-5 ac ft | 1.0596028536575 × 10-5 ac ft | 1.0826376983022 × 10-5 ac ft | 1.1056725429469 × 10-5 ac ft | 1.1287073875916 × 10-5 ac ft | 1.1517422322364 × 10-5 ac ft | 1.1747770768811 × 10-5 ac ft | 1.1978119215258 × 10-5 ac ft | 1.2208467661706 × 10-5 ac ft | 1.2438816108153 × 10-5 ac ft | 1.26691645546 × 10-5 ac ft | 1.2899513001047 × 10-5 ac ft | 1.3129861447495 × 10-5 ac ft | 1.3360209893942 × 10-5 ac ft | 1.3590558340389 × 10-5 ac ft | 1.3820906786836 × 10-5 ac ft | 1.4051255233284 × 10-5 ac ft | 1.4281603679731 × 10-5 ac ft | 1.4511952126178 × 10-5 ac ft | 1.4742300572626 × 10-5 ac ft | 1.4972649019073 × 10-5 ac ft | 1.520299746552 × 10-5 ac ft | 1.5433345911967 × 10-5 ac ft | 1.5663694358415 × 10-5 ac ft | 1.5894042804862 × 10-5 ac ft | 1.6124391251309 × 10-5 ac ft | 1.6354739697756 × 10-5 ac ft | 1.6585088144204 × 10-5 ac ft | 1.6815436590651 × 10-5 ac ft | 1.7045785037098 × 10-5 ac ft | 1.7276133483546 × 10-5 ac ft | 1.7506481929993 × 10-5 ac ft | 1.773683037644 × 10-5 ac ft | 1.7967178822887 × 10-5 ac ft | 1.8197527269335 × 10-5 ac ft | 1.8427875715782 × 10-5 ac ft | 1.8658224162229 × 10-5 ac ft | 1.8888572608676 × 10-5 ac ft | 1.9118921055124 × 10-5 ac ft | 1.9349269501571 × 10-5 ac ft | 1.9579617948018 × 10-5 ac ft | 1.9809966394466 × 10-5 ac ft | 2.0040314840913 × 10-5 ac ft | 2.027066328736 × 10-5 ac ft | 2.0501011733807 × 10-5 ac ft | 2.0731360180255 × 10-5 ac ft | 2.0961708626702 × 10-5 ac ft | 2.1192057073149 × 10-5 ac ft | 2.1422405519596 × 10-5 ac ft | 2.1652753966044 × 10-5 ac ft | 2.1883102412491 × 10-5 ac ft | 2.2113450858938 × 10-5 ac ft | 2.2343799305386 × 10-5 ac ft | 2.2574147751833 × 10-5 ac ft | 2.280449619828 × 10-5 ac ft | 2.3034844644727 × 10-5 ac ft |
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 | acre-feet | imperial cups | acre-feet |
|---|---|---|---|
| 1 | = 2.3034844644727E-7 | 6 | = 1.3820906786836E-6 |
| 2 | = 4.6069689289455E-7 | 7 | = 1.6124391251309E-6 |
| 3 | = 6.9104533934182E-7 | 8 | = 1.8427875715782E-6 |
| 4 | = 9.213937857891E-7 | 9 | = 2.0731360180255E-6 |
| 5 | = 1.1517422322364E-6 | 10 | = 2.3034844644727E-6 |
The acre-foot is a unit of volume commonly used in the United States in reference to large-scale water resources, such as reservoirs, aqueducts, canals, sewer flow capacity, irrigation water, and river flows.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| acre-foot | ac ft | ≡ 1 ac x 1 ft = 43560 cu ft | = 1233.48183754752 m3 | Imperial/US |
| acre-feet | imperial cups | acre-feet | imperial cups |
|---|---|---|---|
| 1 | = 4341249.1615345 | 6 | = 26047494.969207 |
| 2 | = 8682498.323069 | 7 | = 30388744.130741 |
| 3 | = 13023747.484603 | 8 | = 34729993.292276 |
| 4 | = 17364996.646138 | 9 | = 39071242.45381 |
| 5 | = 21706245.807672 | 10 | = 43412491.615345 |
| imperial cups | acre-feet |
|---|---|
| 1 | = 2.3034844644727 × 10-7 |
| 4,341,249.1615345 | = 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 …) |