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 |
board foot | 1.6041667 fbm | 3.2083333 fbm | 4.8125 fbm | 6.4166667 fbm | 8.0208333 fbm | 9.625 fbm | 11.2291667 fbm | 12.8333333 fbm | 14.4375 fbm | 16.0416667 fbm | 17.6458333 fbm | 19.25 fbm | 20.8541667 fbm | 22.4583333 fbm | 24.0625 fbm | 25.6666667 fbm | 27.2708333 fbm | 28.875 fbm | 30.4791667 fbm | 32.0833333 fbm | 33.6875 fbm | 35.2916667 fbm | 36.8958333 fbm | 38.5 fbm | 40.1041667 fbm | 41.7083333 fbm | 43.3125 fbm | 44.9166667 fbm | 46.5208333 fbm | 48.125 fbm | 49.7291667 fbm | 51.3333333 fbm | 52.9375 fbm | 54.5416667 fbm | 56.1458333 fbm | 57.75 fbm | 59.3541667 fbm | 60.9583333 fbm | 62.5625 fbm | 64.1666667 fbm | 65.7708333 fbm | 67.375 fbm | 68.9791667 fbm | 70.5833333 fbm | 72.1875 fbm | 73.7916667 fbm | 75.3958333 fbm | 77 fbm | 78.6041667 fbm | 80.2083333 fbm | 81.8125 fbm | 83.4166667 fbm | 85.0208333 fbm | 86.625 fbm | 88.2291667 fbm | 89.8333333 fbm | 91.4375 fbm | 93.0416667 fbm | 94.6458333 fbm | 96.25 fbm | 97.8541667 fbm | 99.4583333 fbm | 101.0625 fbm | 102.6666667 fbm | 104.2708333 fbm | 105.875 fbm | 107.4791667 fbm | 109.0833333 fbm | 110.6875 fbm | 112.2916667 fbm | 113.8958333 fbm | 115.5 fbm | 117.1041667 fbm | 118.7083333 fbm | 120.3125 fbm | 121.9166667 fbm | 123.5208333 fbm | 125.125 fbm | 126.7291667 fbm | 128.3333333 fbm | 129.9375 fbm | 131.5416667 fbm | 133.1458333 fbm | 134.75 fbm | 136.3541667 fbm | 137.9583333 fbm | 139.5625 fbm | 141.1666667 fbm | 142.7708333 fbm | 144.375 fbm | 145.9791667 fbm | 147.5833333 fbm | 149.1875 fbm | 150.7916667 fbm | 152.3958333 fbm | 154 fbm | 155.6041667 fbm | 157.2083333 fbm | 158.8125 fbm | 160.4166667 fbm |
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 | board feet | US liquid gallons | board feet |
---|---|---|---|
1 | ≡ 1.6041666666667 | 6 | ≡ 9.625 |
2 | ≡ 3.2083333333333 | 7 | ≡ 11.229166666667 |
3 | ≡ 4.8125 | 8 | ≡ 12.833333333333 |
4 | ≡ 6.4166666666667 | 9 | ≡ 14.4375 |
5 | ≡ 8.0208333333333 | 10 | ≡ 16.041666666667 |
The board-foot is a specialized unit of measure for the volume of lumber in the United States and Canada. It is the volume of a one-foot length of a board one foot wide and one inch thick.
Board-foot can be abbreviated FBM (for "foot, board measure"), BDFT, or BF. Thousand board-feet can be abbreviated as MFBM, MBFT, or MBF. Similarly, million board-feet can be abbreviated as MMFBM, MMBFT, or MMBF.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
board foot | fbm | ≡ 144 cu in | ≡ 2.359737216×10−3 m3 | Imperial/US |
board feet | US liquid gallons | board feet | US liquid gallons |
---|---|---|---|
1 | ≡ 0.62337662337662 | 6 | ≡ 3.7402597402597 |
2 | ≡ 1.2467532467532 | 7 | ≡ 4.3636363636364 |
3 | ≡ 1.8701298701299 | 8 | ≡ 4.987012987013 |
4 | ≡ 2.4935064935065 | 9 | ≡ 5.6103896103896 |
5 | ≡ 3.1168831168831 | 10 | ≡ 6.2337662337662 |
US liquid gallons | board feet |
---|---|
1 | ≡ 1.6041667 |
0.6233766 | ≡ 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 …) |