| 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 |
| imperial quart | 2.0762785 qt (imp) | 4.1525570 qt (imp) | 6.2288355 qt (imp) | 8.3051139 qt (imp) | 10.3813924 qt (imp) | 12.4576709 qt (imp) | 14.5339494 qt (imp) | 16.6102279 qt (imp) | 18.6865064 qt (imp) | 20.7627849 qt (imp) | 22.8390633 qt (imp) | 24.9153418 qt (imp) | 26.9916203 qt (imp) | 29.0678988 qt (imp) | 31.1441773 qt (imp) | 33.2204558 qt (imp) | 35.2967343 qt (imp) | 37.3730128 qt (imp) | 39.4492912 qt (imp) | 41.5255697 qt (imp) | 43.6018482 qt (imp) | 45.6781267 qt (imp) | 47.7544052 qt (imp) | 49.8306837 qt (imp) | 51.9069622 qt (imp) | 53.9832406 qt (imp) | 56.0595191 qt (imp) | 58.1357976 qt (imp) | 60.2120761 qt (imp) | 62.2883546 qt (imp) | 64.3646331 qt (imp) | 66.4409116 qt (imp) | 68.5171900 qt (imp) | 70.5934685 qt (imp) | 72.6697470 qt (imp) | 74.7460255 qt (imp) | 76.8223040 qt (imp) | 78.8985825 qt (imp) | 80.9748610 qt (imp) | 83.0511395 qt (imp) | 85.1274179 qt (imp) | 87.2036964 qt (imp) | 89.2799749 qt (imp) | 91.3562534 qt (imp) | 93.4325319 qt (imp) | 95.5088104 qt (imp) | 97.5850889 qt (imp) | 99.6613673 qt (imp) | 101.7376458 qt (imp) | 103.8139243 qt (imp) | 105.8902028 qt (imp) | 107.9664813 qt (imp) | 110.0427598 qt (imp) | 112.1190383 qt (imp) | 114.1953167 qt (imp) | 116.2715952 qt (imp) | 118.3478737 qt (imp) | 120.4241522 qt (imp) | 122.5004307 qt (imp) | 124.5767092 qt (imp) | 126.6529877 qt (imp) | 128.7292662 qt (imp) | 130.8055446 qt (imp) | 132.8818231 qt (imp) | 134.9581016 qt (imp) | 137.0343801 qt (imp) | 139.1106586 qt (imp) | 141.1869371 qt (imp) | 143.2632156 qt (imp) | 145.3394940 qt (imp) | 147.4157725 qt (imp) | 149.4920510 qt (imp) | 151.5683295 qt (imp) | 153.6446080 qt (imp) | 155.7208865 qt (imp) | 157.7971650 qt (imp) | 159.8734434 qt (imp) | 161.9497219 qt (imp) | 164.0260004 qt (imp) | 166.1022789 qt (imp) | 168.1785574 qt (imp) | 170.2548359 qt (imp) | 172.3311144 qt (imp) | 174.4073929 qt (imp) | 176.4836713 qt (imp) | 178.5599498 qt (imp) | 180.6362283 qt (imp) | 182.7125068 qt (imp) | 184.7887853 qt (imp) | 186.8650638 qt (imp) | 188.9413423 qt (imp) | 191.0176207 qt (imp) | 193.0938992 qt (imp) | 195.1701777 qt (imp) | 197.2464562 qt (imp) | 199.3227347 qt (imp) | 201.3990132 qt (imp) | 203.4752917 qt (imp) | 205.5515701 qt (imp) | 207.6278486 qt (imp) |
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 | imperial quarts | board feet | imperial quarts |
|---|---|---|---|
| 1 | = 2.0762784863476 | 6 | = 12.457670918086 |
| 2 | = 4.1525569726952 | 7 | = 14.533949404433 |
| 3 | = 6.2288354590428 | 8 | = 16.610227890781 |
| 4 | = 8.3051139453904 | 9 | = 18.686506377128 |
| 5 | = 10.381392431738 | 10 | = 20.762784863476 |
The quart (abbreviation qt.) is an English unit of volume equal to a quarter gallon. It is divided into two pints or four cups. Historically, the exact size of the quart has varied with the different values of gallons over time and in reference to different commodities. Presently, three kinds of quarts remain in use: the liquid quart and dry quart of the US customary system and the imperial quart of the British imperial system. All are roughly equal to one metric liter.
The imperial quart, used for both liquid or dry capacity, is equal to one quarter of an imperial gallon, or exactly 1.1365225 liters.
| 1 imperial quart | = | 1/4 | imperial gallons |
| = | 2 | imperial pints | |
| = | 40 | imperial fluid ounces | |
| ≡ | 1.1365225 | liters | |
| ≈ | 69.355 | cubic inches | |
| ≈ | 38.430 | US fluid ounces |
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| imperial quart | qt (imp) | ≡ 1⁄4 gal (imp) | = 1.1365225×10−3 m3 | Imperial/US |
| imperial quarts | board feet | imperial quarts | board feet |
|---|---|---|---|
| 1 | = 0.48163095970768 | 6 | = 2.8897857582461 |
| 2 | = 0.96326191941535 | 7 | = 3.3714167179537 |
| 3 | = 1.444892879123 | 8 | = 3.8530476776614 |
| 4 | = 1.9265238388307 | 9 | = 4.3346786373691 |
| 5 | = 2.4081547985384 | 10 | = 4.8163095970768 |
| board feet | imperial quarts |
|---|---|
| 1 | = 2.0762785 |
| 0.4816310 | = 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 …) |