US liquid gallon | 1 US gal lqd | 2 US gal lqd | 3 US gal lqd | 4 US gal lqd | 5 US gal lqd | 6 US gal lqd | 7 US gal lqd | 8 US gal lqd | 9 US gal lqd | 10 US gal lqd | 11 US gal lqd | 12 US gal lqd | 13 US gal lqd | 14 US gal lqd | 15 US gal lqd | 16 US gal lqd | 17 US gal lqd | 18 US gal lqd | 19 US gal lqd | 20 US gal lqd | 21 US gal lqd | 22 US gal lqd | 23 US gal lqd | 24 US gal lqd | 25 US gal lqd | 26 US gal lqd | 27 US gal lqd | 28 US gal lqd | 29 US gal lqd | 30 US gal lqd | 31 US gal lqd | 32 US gal lqd | 33 US gal lqd | 34 US gal lqd | 35 US gal lqd | 36 US gal lqd | 37 US gal lqd | 38 US gal lqd | 39 US gal lqd | 40 US gal lqd | 41 US gal lqd | 42 US gal lqd | 43 US gal lqd | 44 US gal lqd | 45 US gal lqd | 46 US gal lqd | 47 US gal lqd | 48 US gal lqd | 49 US gal lqd | 50 US gal lqd | 51 US gal lqd | 52 US gal lqd | 53 US gal lqd | 54 US gal lqd | 55 US gal lqd | 56 US gal lqd | 57 US gal lqd | 58 US gal lqd | 59 US gal lqd | 60 US gal lqd | 61 US gal lqd | 62 US gal lqd | 63 US gal lqd | 64 US gal lqd | 65 US gal lqd | 66 US gal lqd | 67 US gal lqd | 68 US gal lqd | 69 US gal lqd | 70 US gal lqd | 71 US gal lqd | 72 US gal lqd | 73 US gal lqd | 74 US gal lqd | 75 US gal lqd | 76 US gal lqd | 77 US gal lqd | 78 US gal lqd | 79 US gal lqd | 80 US gal lqd | 81 US gal lqd | 82 US gal lqd | 83 US gal lqd | 84 US gal lqd | 85 US gal lqd | 86 US gal lqd | 87 US gal lqd | 88 US gal lqd | 89 US gal lqd | 90 US gal lqd | 91 US gal lqd | 92 US gal lqd | 93 US gal lqd | 94 US gal lqd | 95 US gal lqd | 96 US gal lqd | 97 US gal lqd | 98 US gal lqd | 99 US gal lqd | 100 US gal lqd |
acre-foot | 3.0688832772166 × 10-6 ac ft | 6.1377665544332 × 10-6 ac ft | 9.2066498316498 × 10-6 ac ft | 1.2275533108866 × 10-5 ac ft | 1.5344416386083 × 10-5 ac ft | 1.84132996633 × 10-5 ac ft | 2.1482182940516 × 10-5 ac ft | 2.4551066217733 × 10-5 ac ft | 2.7619949494949 × 10-5 ac ft | 3.0688832772166 × 10-5 ac ft | 3.3757716049383 × 10-5 ac ft | 3.6826599326599 × 10-5 ac ft | 3.9895482603816 × 10-5 ac ft | 4.2964365881033 × 10-5 ac ft | 4.6033249158249 × 10-5 ac ft | 4.9102132435466 × 10-5 ac ft | 5.2171015712682 × 10-5 ac ft | 5.5239898989899 × 10-5 ac ft | 5.8308782267116 × 10-5 ac ft | 6.1377665544332 × 10-5 ac ft | 6.4446548821549 × 10-5 ac ft | 6.7515432098765 × 10-5 ac ft | 7.0584315375982 × 10-5 ac ft | 7.3653198653199 × 10-5 ac ft | 7.6722081930415 × 10-5 ac ft | 7.9790965207632 × 10-5 ac ft | 8.2859848484848 × 10-5 ac ft | 8.5928731762065 × 10-5 ac ft | 8.8997615039282 × 10-5 ac ft | 9.2066498316498 × 10-5 ac ft | 9.5135381593715 × 10-5 ac ft | 9.8204264870932 × 10-5 ac ft | 0.0001013 ac ft | 0.0001043 ac ft | 0.0001074 ac ft | 0.0001105 ac ft | 0.0001135 ac ft | 0.0001166 ac ft | 0.0001197 ac ft | 0.0001228 ac ft | 0.0001258 ac ft | 0.0001289 ac ft | 0.0001320 ac ft | 0.0001350 ac ft | 0.0001381 ac ft | 0.0001412 ac ft | 0.0001442 ac ft | 0.0001473 ac ft | 0.0001504 ac ft | 0.0001534 ac ft | 0.0001565 ac ft | 0.0001596 ac ft | 0.0001627 ac ft | 0.0001657 ac ft | 0.0001688 ac ft | 0.0001719 ac ft | 0.0001749 ac ft | 0.0001780 ac ft | 0.0001811 ac ft | 0.0001841 ac ft | 0.0001872 ac ft | 0.0001903 ac ft | 0.0001933 ac ft | 0.0001964 ac ft | 0.0001995 ac ft | 0.0002025 ac ft | 0.0002056 ac ft | 0.0002087 ac ft | 0.0002118 ac ft | 0.0002148 ac ft | 0.0002179 ac ft | 0.0002210 ac ft | 0.0002240 ac ft | 0.0002271 ac ft | 0.0002302 ac ft | 0.0002332 ac ft | 0.0002363 ac ft | 0.0002394 ac ft | 0.0002424 ac ft | 0.0002455 ac ft | 0.0002486 ac ft | 0.0002516 ac ft | 0.0002547 ac ft | 0.0002578 ac ft | 0.0002609 ac ft | 0.0002639 ac ft | 0.0002670 ac ft | 0.0002701 ac ft | 0.0002731 ac ft | 0.0002762 ac ft | 0.0002793 ac ft | 0.0002823 ac ft | 0.0002854 ac ft | 0.0002885 ac ft | 0.0002915 ac ft | 0.0002946 ac ft | 0.0002977 ac ft | 0.0003008 ac ft | 0.0003038 ac ft | 0.0003069 ac ft |
The US gallon is legally defined as 231 cubic inches, which is exactly 3.785411784 liters. A US liquid gallon of water weighs about 8.34 pounds or 3.78 kilograms at 62 °F (17 °C), making it about 16.6% lighter than the imperial gallon. There are four quarts in a gallon, two pints in a quart and 16 US fluid ounces in a US pint, which makes the US fluid ounce equal to 1⁄128 of a US gallon. In order to overcome the effects of expansion and contraction with temperature when using a gallon to specify a quantity of material for purposes of trade, it is common to define the temperature at which the material will occupy the specified volume. For example, the volume of petroleum products and alcoholic beverages are both referenced to 60 °F (16 °C) in government regulations.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
US liquid gallon | US gal lqd | ≡ 231 cu in | ≡ 3.785411784×10−3 m3 | Imperial/US |
US liquid gallons | acre-feet | US liquid gallons | acre-feet |
---|---|---|---|
1 | = 3.0688832772166E-6 | 6 | = 1.84132996633E-5 |
2 | = 6.1377665544332E-6 | 7 | = 2.1482182940516E-5 |
3 | = 9.2066498316498E-6 | 8 | = 2.4551066217733E-5 |
4 | = 1.2275533108866E-5 | 9 | = 2.7619949494949E-5 |
5 | = 1.5344416386083E-5 | 10 | = 3.0688832772166E-5 |
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 | US liquid gallons | acre-feet | US liquid gallons |
---|---|---|---|
1 | = 325851.42857143 | 6 | = 1955108.5714286 |
2 | = 651702.85714286 | 7 | = 2280960 |
3 | = 977554.28571429 | 8 | = 2606811.4285714 |
4 | = 1303405.7142857 | 9 | = 2932662.8571429 |
5 | = 1629257.1428571 | 10 | = 3258514.2857143 |
US liquid gallons | acre-feet |
---|---|
1 | = 3.0688832772166 × 10-6 |
325,851.4285714 | = 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 …) |