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 |
firkin | 30,147.5636218 firkin | 60,295.1272435 firkin | 90,442.6908653 firkin | 120,590.2544871 firkin | 150,737.8181088 firkin | 180,885.3817306 firkin | 211,032.9453524 firkin | 241,180.5089741 firkin | 271,328.0725959 firkin | 301,475.6362177 firkin | 331,623.1998394 firkin | 361,770.7634612 firkin | 391,918.3270830 firkin | 422,065.8907047 firkin | 452,213.4543265 firkin | 482,361.0179483 firkin | 512,508.5815700 firkin | 542,656.1451918 firkin | 572,803.7088136 firkin | 602,951.2724354 firkin | 633,098.8360571 firkin | 663,246.3996789 firkin | 693,393.9633007 firkin | 723,541.5269224 firkin | 753,689.0905442 firkin | 783,836.6541660 firkin | 813,984.2177877 firkin | 844,131.7814095 firkin | 874,279.3450313 firkin | 904,426.9086530 firkin | 934,574.4722748 firkin | 964,722.0358966 firkin | 994,869.5995183 firkin | 1,025,017.1631401 firkin | 1,055,164.7267619 firkin | 1,085,312.2903836 firkin | 1,115,459.8540054 firkin | 1,145,607.4176272 firkin | 1,175,754.9812489 firkin | 1,205,902.5448707 firkin | 1,236,050.1084925 firkin | 1,266,197.6721142 firkin | 1,296,345.235736 firkin | 1,326,492.7993578 firkin | 1,356,640.3629795 firkin | 1,386,787.9266013 firkin | 1,416,935.4902231 firkin | 1,447,083.0538448 firkin | 1,477,230.6174666 firkin | 1,507,378.1810884 firkin | 1,537,525.7447101 firkin | 1,567,673.3083319 firkin | 1,597,820.8719537 firkin | 1,627,968.4355754 firkin | 1,658,115.9991972 firkin | 1,688,263.562819 firkin | 1,718,411.1264407 firkin | 1,748,558.6900625 firkin | 1,778,706.2536843 firkin | 1,808,853.817306 firkin | 1,839,001.3809278 firkin | 1,869,148.9445496 firkin | 1,899,296.5081713 firkin | 1,929,444.0717931 firkin | 1,959,591.6354149 firkin | 1,989,739.1990366 firkin | 2,019,886.7626584 firkin | 2,050,034.3262802 firkin | 2,080,181.8899019 firkin | 2,110,329.4535237 firkin | 2,140,477.0171455 firkin | 2,170,624.5807672 firkin | 2,200,772.144389 firkin | 2,230,919.7080108 firkin | 2,261,067.2716325 firkin | 2,291,214.8352543 firkin | 2,321,362.3988761 firkin | 2,351,509.9624978 firkin | 2,381,657.5261196 firkin | 2,411,805.0897414 firkin | 2,441,952.6533631 firkin | 2,472,100.2169849 firkin | 2,502,247.7806067 firkin | 2,532,395.3442285 firkin | 2,562,542.9078502 firkin | 2,592,690.471472 firkin | 2,622,838.0350938 firkin | 2,652,985.5987155 firkin | 2,683,133.1623373 firkin | 2,713,280.7259591 firkin | 2,743,428.2895808 firkin | 2,773,575.8532026 firkin | 2,803,723.4168244 firkin | 2,833,870.9804461 firkin | 2,864,018.5440679 firkin | 2,894,166.1076897 firkin | 2,924,313.6713114 firkin | 2,954,461.2349332 firkin | 2,984,608.798555 firkin | 3,014,756.3621767 firkin |
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 | firkins | acre-feet | firkins |
---|---|---|---|
1 | = 30147.563621767 | 6 | = 180885.3817306 |
2 | = 60295.127243535 | 7 | = 211032.94535237 |
3 | = 90442.690865302 | 8 | = 241180.50897414 |
4 | = 120590.25448707 | 9 | = 271328.07259591 |
5 | = 150737.81810884 | 10 | = 301475.63621767 |
The ale or beer firkin (from Middle Dutch vierdekijn meaning "fourth") is a quarter of an ale or beer barrel or half a kilderkin. This unit is much smaller than the wine firkin. Casks in this size (themselves called firkins) are the most common container for cask ale.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
firkin | ≡ 9 gal (imp) | = 0.04091481 m3 | Imperial/US |
firkins | acre-feet | firkins | acre-feet |
---|---|---|---|
1 | = 3.3170176288407E-5 | 6 | = 0.00019902105773044 |
2 | = 6.6340352576815E-5 | 7 | = 0.00023219123401885 |
3 | = 9.9510528865222E-5 | 8 | = 0.00026536141030726 |
4 | = 0.00013268070515363 | 9 | = 0.00029853158659567 |
5 | = 0.00016585088144204 | 10 | = 0.00033170176288407 |
acre-feet | firkins |
---|---|
1 | = 30,147.5636218 |
3.3170176288407 × 10-5 | = 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 …) |