board foot | 1 fbm | 2 fbm | 3 fbm | 4 fbm | 5 fbm | 6 fbm | 7 fbm | 8 fbm | 9 fbm | 10 fbm | 11 fbm | 12 fbm | 13 fbm | 14 fbm | 15 fbm | 16 fbm | 17 fbm | 18 fbm | 19 fbm | 20 fbm | 21 fbm | 22 fbm | 23 fbm | 24 fbm | 25 fbm | 26 fbm | 27 fbm | 28 fbm | 29 fbm | 30 fbm | 31 fbm | 32 fbm | 33 fbm | 34 fbm | 35 fbm | 36 fbm | 37 fbm | 38 fbm | 39 fbm | 40 fbm | 41 fbm | 42 fbm | 43 fbm | 44 fbm | 45 fbm | 46 fbm | 47 fbm | 48 fbm | 49 fbm | 50 fbm | 51 fbm | 52 fbm | 53 fbm | 54 fbm | 55 fbm | 56 fbm | 57 fbm | 58 fbm | 59 fbm | 60 fbm | 61 fbm | 62 fbm | 63 fbm | 64 fbm | 65 fbm | 66 fbm | 67 fbm | 68 fbm | 69 fbm | 70 fbm | 71 fbm | 72 fbm | 73 fbm | 74 fbm | 75 fbm | 76 fbm | 77 fbm | 78 fbm | 79 fbm | 80 fbm | 81 fbm | 82 fbm | 83 fbm | 84 fbm | 85 fbm | 86 fbm | 87 fbm | 88 fbm | 89 fbm | 90 fbm | 91 fbm | 92 fbm | 93 fbm | 94 fbm | 95 fbm | 96 fbm | 97 fbm | 98 fbm | 99 fbm | 100 fbm |
US liquid gallon | 0.6233766 US gal lqd | 1.2467532 US gal lqd | 1.8701299 US gal lqd | 2.4935065 US gal lqd | 3.1168831 US gal lqd | 3.7402597 US gal lqd | 4.3636364 US gal lqd | 4.9870130 US gal lqd | 5.6103896 US gal lqd | 6.2337662 US gal lqd | 6.8571429 US gal lqd | 7.4805195 US gal lqd | 8.1038961 US gal lqd | 8.7272727 US gal lqd | 9.3506494 US gal lqd | 9.9740260 US gal lqd | 10.5974026 US gal lqd | 11.2207792 US gal lqd | 11.8441558 US gal lqd | 12.4675325 US gal lqd | 13.0909091 US gal lqd | 13.7142857 US gal lqd | 14.3376623 US gal lqd | 14.9610390 US gal lqd | 15.5844156 US gal lqd | 16.2077922 US gal lqd | 16.8311688 US gal lqd | 17.4545455 US gal lqd | 18.0779221 US gal lqd | 18.7012987 US gal lqd | 19.3246753 US gal lqd | 19.9480519 US gal lqd | 20.5714286 US gal lqd | 21.1948052 US gal lqd | 21.8181818 US gal lqd | 22.4415584 US gal lqd | 23.0649351 US gal lqd | 23.6883117 US gal lqd | 24.3116883 US gal lqd | 24.9350649 US gal lqd | 25.5584416 US gal lqd | 26.1818182 US gal lqd | 26.8051948 US gal lqd | 27.4285714 US gal lqd | 28.0519481 US gal lqd | 28.6753247 US gal lqd | 29.2987013 US gal lqd | 29.9220779 US gal lqd | 30.5454545 US gal lqd | 31.1688312 US gal lqd | 31.7922078 US gal lqd | 32.4155844 US gal lqd | 33.0389610 US gal lqd | 33.6623377 US gal lqd | 34.2857143 US gal lqd | 34.9090909 US gal lqd | 35.5324675 US gal lqd | 36.1558442 US gal lqd | 36.7792208 US gal lqd | 37.4025974 US gal lqd | 38.0259740 US gal lqd | 38.6493506 US gal lqd | 39.2727273 US gal lqd | 39.8961039 US gal lqd | 40.5194805 US gal lqd | 41.1428571 US gal lqd | 41.7662338 US gal lqd | 42.3896104 US gal lqd | 43.0129870 US gal lqd | 43.6363636 US gal lqd | 44.2597403 US gal lqd | 44.8831169 US gal lqd | 45.5064935 US gal lqd | 46.1298701 US gal lqd | 46.7532468 US gal lqd | 47.3766234 US gal lqd | 48 US gal lqd | 48.6233766 US gal lqd | 49.2467532 US gal lqd | 49.8701299 US gal lqd | 50.4935065 US gal lqd | 51.1168831 US gal lqd | 51.7402597 US gal lqd | 52.3636364 US gal lqd | 52.9870130 US gal lqd | 53.6103896 US gal lqd | 54.2337662 US gal lqd | 54.8571429 US gal lqd | 55.4805195 US gal lqd | 56.1038961 US gal lqd | 56.7272727 US gal lqd | 57.3506494 US gal lqd | 57.9740260 US gal lqd | 58.5974026 US gal lqd | 59.2207792 US gal lqd | 59.8441558 US gal lqd | 60.4675325 US gal lqd | 61.0909091 US gal lqd | 61.7142857 US gal lqd | 62.3376623 US gal lqd |
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 |
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 |
board feet | US liquid gallons |
---|---|
1 | ≡ 0.6233766 |
1.6041667 | ≡ 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 …) |