| acre-foot | 1 ac ft | 2 ac ft | 3 ac ft | 4 ac ft | 5 ac ft | 6 ac ft | 7 ac ft | 8 ac ft | 9 ac ft | 10 ac ft | 11 ac ft | 12 ac ft | 13 ac ft | 14 ac ft | 15 ac ft | 16 ac ft | 17 ac ft | 18 ac ft | 19 ac ft | 20 ac ft | 21 ac ft | 22 ac ft | 23 ac ft | 24 ac ft | 25 ac ft | 26 ac ft | 27 ac ft | 28 ac ft | 29 ac ft | 30 ac ft | 31 ac ft | 32 ac ft | 33 ac ft | 34 ac ft | 35 ac ft | 36 ac ft | 37 ac ft | 38 ac ft | 39 ac ft | 40 ac ft | 41 ac ft | 42 ac ft | 43 ac ft | 44 ac ft | 45 ac ft | 46 ac ft | 47 ac ft | 48 ac ft | 49 ac ft | 50 ac ft | 51 ac ft | 52 ac ft | 53 ac ft | 54 ac ft | 55 ac ft | 56 ac ft | 57 ac ft | 58 ac ft | 59 ac ft | 60 ac ft | 61 ac ft | 62 ac ft | 63 ac ft | 64 ac ft | 65 ac ft | 66 ac ft | 67 ac ft | 68 ac ft | 69 ac ft | 70 ac ft | 71 ac ft | 72 ac ft | 73 ac ft | 74 ac ft | 75 ac ft | 76 ac ft | 77 ac ft | 78 ac ft | 79 ac ft | 80 ac ft | 81 ac ft | 82 ac ft | 83 ac ft | 84 ac ft | 85 ac ft | 86 ac ft | 87 ac ft | 88 ac ft | 89 ac ft | 90 ac ft | 91 ac ft | 92 ac ft | 93 ac ft | 94 ac ft | 95 ac ft | 96 ac ft | 97 ac ft | 98 ac ft | 99 ac ft | 100 ac ft |
| quarter | 4,239.5011343 qt | 8,479.0022686 qt | 12,718.5034029 qt | 16,958.0045372 qt | 21,197.5056716 qt | 25,437.0068059 qt | 29,676.5079402 qt | 33,916.0090745 qt | 38,155.5102088 qt | 42,395.0113431 qt | 46,634.5124774 qt | 50,874.0136117 qt | 55,113.5147460 qt | 59,353.0158804 qt | 63,592.5170147 qt | 67,832.0181490 qt | 72,071.5192833 qt | 76,311.0204176 qt | 80,550.5215519 qt | 84,790.0226862 qt | 89,029.5238205 qt | 93,269.0249548 qt | 97,508.5260892 qt | 101,748.0272235 qt | 105,987.5283578 qt | 110,227.0294921 qt | 114,466.5306264 qt | 118,706.0317607 qt | 122,945.5328950 qt | 127,185.0340293 qt | 131,424.5351636 qt | 135,664.0362980 qt | 139,903.5374323 qt | 144,143.0385666 qt | 148,382.5397009 qt | 152,622.0408352 qt | 156,861.5419695 qt | 161,101.0431038 qt | 165,340.5442381 qt | 169,580.0453724 qt | 173,819.5465068 qt | 178,059.0476411 qt | 182,298.5487754 qt | 186,538.0499097 qt | 190,777.551044 qt | 195,017.0521783 qt | 199,256.5533126 qt | 203,496.0544469 qt | 207,735.5555812 qt | 211,975.0567156 qt | 216,214.5578499 qt | 220,454.0589842 qt | 224,693.5601185 qt | 228,933.0612528 qt | 233,172.5623871 qt | 237,412.0635214 qt | 241,651.5646557 qt | 245,891.0657900 qt | 250,130.5669244 qt | 254,370.0680587 qt | 258,609.5691930 qt | 262,849.0703273 qt | 267,088.5714616 qt | 271,328.0725959 qt | 275,567.5737302 qt | 279,807.0748645 qt | 284,046.5759988 qt | 288,286.0771332 qt | 292,525.5782675 qt | 296,765.0794018 qt | 301,004.5805361 qt | 305,244.0816704 qt | 309,483.5828047 qt | 313,723.0839390 qt | 317,962.5850733 qt | 322,202.0862076 qt | 326,441.5873420 qt | 330,681.0884763 qt | 334,920.5896106 qt | 339,160.0907449 qt | 343,399.5918792 qt | 347,639.0930135 qt | 351,878.5941478 qt | 356,118.0952821 qt | 360,357.5964164 qt | 364,597.0975508 qt | 368,836.5986851 qt | 373,076.0998194 qt | 377,315.6009537 qt | 381,555.1020880 qt | 385,794.6032223 qt | 390,034.1043566 qt | 394,273.6054909 qt | 398,513.1066252 qt | 402,752.6077596 qt | 406,992.1088939 qt | 411,231.6100282 qt | 415,471.1111625 qt | 419,710.6122968 qt | 423,950.1134311 qt |
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 | quarters | acre-feet | quarters |
|---|---|---|---|
| 1 | = 4239.501134311 | 6 | = 25437.006805866 |
| 2 | = 8479.002268622 | 7 | = 29676.507940177 |
| 3 | = 12718.503402933 | 8 | = 33916.009074488 |
| 4 | = 16958.004537244 | 9 | = 38155.510208799 |
| 5 | = 21197.505671555 | 10 | = 42395.01134311 |
The quarter (lit. "one-fourth") is used as the name of several distinct English units based on ¼ sizes of some base unit.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| quarter | qt | ≡ 8 bu (imp) | = 0.29094976 m3 | Imperial/US |
| quarters | acre-feet | quarters | acre-feet |
|---|---|---|---|
| 1 | = 0.00023587680916201 | 6 | = 0.0014152608549721 |
| 2 | = 0.00047175361832402 | 7 | = 0.0016511376641341 |
| 3 | = 0.00070763042748603 | 8 | = 0.0018870144732961 |
| 4 | = 0.00094350723664803 | 9 | = 0.0021228912824581 |
| 5 | = 0.00117938404581 | 10 | = 0.0023587680916201 |
| acre-feet | quarters |
|---|---|
| 1 | = 4,239.5011343 |
| 0.0002359 | = 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 …) |