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 |
firkin | 0.0576744 firkin | 0.1153488 firkin | 0.1730232 firkin | 0.2306976 firkin | 0.2883720 firkin | 0.3460464 firkin | 0.4037208 firkin | 0.4613952 firkin | 0.5190696 firkin | 0.5767440 firkin | 0.6344184 firkin | 0.6920928 firkin | 0.7497672 firkin | 0.8074416 firkin | 0.8651160 firkin | 0.9227904 firkin | 0.9804648 firkin | 1.0381392 firkin | 1.0958136 firkin | 1.1534880 firkin | 1.2111625 firkin | 1.2688369 firkin | 1.3265113 firkin | 1.3841857 firkin | 1.4418601 firkin | 1.4995345 firkin | 1.5572089 firkin | 1.6148833 firkin | 1.6725577 firkin | 1.7302321 firkin | 1.7879065 firkin | 1.8455809 firkin | 1.9032553 firkin | 1.9609297 firkin | 2.0186041 firkin | 2.0762785 firkin | 2.1339529 firkin | 2.1916273 firkin | 2.2493017 firkin | 2.3069761 firkin | 2.3646505 firkin | 2.4223249 firkin | 2.4799993 firkin | 2.5376737 firkin | 2.5953481 firkin | 2.6530225 firkin | 2.7106969 firkin | 2.7683713 firkin | 2.8260457 firkin | 2.8837201 firkin | 2.9413945 firkin | 2.9990689 firkin | 3.0567433 firkin | 3.1144177 firkin | 3.1720921 firkin | 3.2297665 firkin | 3.2874409 firkin | 3.3451153 firkin | 3.4027897 firkin | 3.4604641 firkin | 3.5181385 firkin | 3.5758129 firkin | 3.6334874 firkin | 3.6911618 firkin | 3.7488362 firkin | 3.8065106 firkin | 3.8641850 firkin | 3.9218594 firkin | 3.9795338 firkin | 4.0372082 firkin | 4.0948826 firkin | 4.1525570 firkin | 4.2102314 firkin | 4.2679058 firkin | 4.3255802 firkin | 4.3832546 firkin | 4.4409290 firkin | 4.4986034 firkin | 4.5562778 firkin | 4.6139522 firkin | 4.6716266 firkin | 4.7293010 firkin | 4.7869754 firkin | 4.8446498 firkin | 4.9023242 firkin | 4.9599986 firkin | 5.0176730 firkin | 5.0753474 firkin | 5.1330218 firkin | 5.1906962 firkin | 5.2483706 firkin | 5.3060450 firkin | 5.3637194 firkin | 5.4213938 firkin | 5.4790682 firkin | 5.5367426 firkin | 5.5944170 firkin | 5.6520914 firkin | 5.7097658 firkin | 5.7674402 firkin |
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 | firkins | board feet | firkins |
---|---|---|---|
1 | = 0.057674402398545 | 6 | = 0.34604641439127 |
2 | = 0.11534880479709 | 7 | = 0.40372081678981 |
3 | = 0.17302320719563 | 8 | = 0.46139521918836 |
4 | = 0.23069760959418 | 9 | = 0.5190696215869 |
5 | = 0.28837201199272 | 10 | = 0.57674402398545 |
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 | board feet | firkins | board feet |
---|---|---|---|
1 | = 17.338714549476 | 6 | = 104.03228729686 |
2 | = 34.677429098953 | 7 | = 121.37100184633 |
3 | = 52.016143648429 | 8 | = 138.70971639581 |
4 | = 69.354858197905 | 9 | = 156.04843094529 |
5 | = 86.693572747382 | 10 | = 173.38714549476 |
board feet | firkins |
---|---|
1 | = 0.0576744 |
17.3387145 | = 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 …) |