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 |
perch | 0.0033670 per | 0.0067340 per | 0.0101010 per | 0.0134680 per | 0.0168350 per | 0.0202020 per | 0.0235690 per | 0.0269360 per | 0.0303030 per | 0.0336700 per | 0.0370370 per | 0.0404040 per | 0.0437710 per | 0.0471380 per | 0.0505051 per | 0.0538721 per | 0.0572391 per | 0.0606061 per | 0.0639731 per | 0.0673401 per | 0.0707071 per | 0.0740741 per | 0.0774411 per | 0.0808081 per | 0.0841751 per | 0.0875421 per | 0.0909091 per | 0.0942761 per | 0.0976431 per | 0.1010101 per | 0.1043771 per | 0.1077441 per | 0.1111111 per | 0.1144781 per | 0.1178451 per | 0.1212121 per | 0.1245791 per | 0.1279461 per | 0.1313131 per | 0.1346801 per | 0.1380471 per | 0.1414141 per | 0.1447811 per | 0.1481481 per | 0.1515152 per | 0.1548822 per | 0.1582492 per | 0.1616162 per | 0.1649832 per | 0.1683502 per | 0.1717172 per | 0.1750842 per | 0.1784512 per | 0.1818182 per | 0.1851852 per | 0.1885522 per | 0.1919192 per | 0.1952862 per | 0.1986532 per | 0.2020202 per | 0.2053872 per | 0.2087542 per | 0.2121212 per | 0.2154882 per | 0.2188552 per | 0.2222222 per | 0.2255892 per | 0.2289562 per | 0.2323232 per | 0.2356902 per | 0.2390572 per | 0.2424242 per | 0.2457912 per | 0.2491582 per | 0.2525253 per | 0.2558923 per | 0.2592593 per | 0.2626263 per | 0.2659933 per | 0.2693603 per | 0.2727273 per | 0.2760943 per | 0.2794613 per | 0.2828283 per | 0.2861953 per | 0.2895623 per | 0.2929293 per | 0.2962963 per | 0.2996633 per | 0.3030303 per | 0.3063973 per | 0.3097643 per | 0.3131313 per | 0.3164983 per | 0.3198653 per | 0.3232323 per | 0.3265993 per | 0.3299663 per | 0.3333333 per | 0.3367003 per |
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 | perches | board feet | perches |
---|---|---|---|
1 | = 0.0033670033670034 | 6 | = 0.02020202020202 |
2 | = 0.0067340067340067 | 7 | = 0.023569023569024 |
3 | = 0.01010101010101 | 8 | = 0.026936026936027 |
4 | = 0.013468013468013 | 9 | = 0.03030303030303 |
5 | = 0.016835016835017 | 10 | = 0.033670033670034 |
A traditional unit of volume for stone and other masonry. A perch of masonry is the volume of a stone wall one perch (16 1⁄2 feet or 5.03 metres) long, 18 inches (45.7 cm) high, and 12 inches (30.5 cm) thick. This is equivalent to exactly 24 3⁄4 cubic feet (0.92 cubic yards; 0.70 cubic metres; 700 litres).
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
perch | per | ≡ 16 1⁄2 ft × 1 1⁄2 ft × 1 ft | = 0.700841953152 m3 | Imperial/US |
perches | board feet | perches | board feet |
---|---|---|---|
1 | = 297 | 6 | = 1782 |
2 | = 594 | 7 | = 2079 |
3 | = 891 | 8 | = 2376 |
4 | = 1188 | 9 | = 2673 |
5 | = 1485 | 10 | = 2970 |
board feet | perches |
---|---|
1 | = 0.0033670 |
297 | = 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 …) |