| 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 tablespoon | 159.5844156 tbsp (US) | 319.1688312 tbsp (US) | 478.7532468 tbsp (US) | 638.3376623 tbsp (US) | 797.9220779 tbsp (US) | 957.5064935 tbsp (US) | 1,117.0909091 tbsp (US) | 1,276.6753247 tbsp (US) | 1,436.2597403 tbsp (US) | 1,595.8441558 tbsp (US) | 1,755.4285714 tbsp (US) | 1,915.0129870 tbsp (US) | 2,074.5974026 tbsp (US) | 2,234.1818182 tbsp (US) | 2,393.7662338 tbsp (US) | 2,553.3506494 tbsp (US) | 2,712.9350649 tbsp (US) | 2,872.5194805 tbsp (US) | 3,032.1038961 tbsp (US) | 3,191.6883117 tbsp (US) | 3,351.2727273 tbsp (US) | 3,510.8571429 tbsp (US) | 3,670.4415584 tbsp (US) | 3,830.0259740 tbsp (US) | 3,989.6103896 tbsp (US) | 4,149.1948052 tbsp (US) | 4,308.7792208 tbsp (US) | 4,468.3636364 tbsp (US) | 4,627.9480519 tbsp (US) | 4,787.5324675 tbsp (US) | 4,947.1168831 tbsp (US) | 5,106.7012987 tbsp (US) | 5,266.2857143 tbsp (US) | 5,425.8701299 tbsp (US) | 5,585.4545455 tbsp (US) | 5,745.0389610 tbsp (US) | 5,904.6233766 tbsp (US) | 6,064.2077922 tbsp (US) | 6,223.7922078 tbsp (US) | 6,383.3766234 tbsp (US) | 6,542.9610390 tbsp (US) | 6,702.5454545 tbsp (US) | 6,862.1298701 tbsp (US) | 7,021.7142857 tbsp (US) | 7,181.2987013 tbsp (US) | 7,340.8831169 tbsp (US) | 7,500.4675325 tbsp (US) | 7,660.0519481 tbsp (US) | 7,819.6363636 tbsp (US) | 7,979.2207792 tbsp (US) | 8,138.8051948 tbsp (US) | 8,298.3896104 tbsp (US) | 8,457.9740260 tbsp (US) | 8,617.5584416 tbsp (US) | 8,777.1428571 tbsp (US) | 8,936.7272727 tbsp (US) | 9,096.3116883 tbsp (US) | 9,255.8961039 tbsp (US) | 9,415.4805195 tbsp (US) | 9,575.0649351 tbsp (US) | 9,734.6493506 tbsp (US) | 9,894.2337662 tbsp (US) | 10,053.8181818 tbsp (US) | 10,213.4025974 tbsp (US) | 10,372.9870130 tbsp (US) | 10,532.5714286 tbsp (US) | 10,692.1558442 tbsp (US) | 10,851.7402597 tbsp (US) | 11,011.3246753 tbsp (US) | 11,170.9090909 tbsp (US) | 11,330.4935065 tbsp (US) | 11,490.0779221 tbsp (US) | 11,649.6623377 tbsp (US) | 11,809.2467532 tbsp (US) | 11,968.8311688 tbsp (US) | 12,128.4155844 tbsp (US) | 12 288 tbsp (US) | 12,447.5844156 tbsp (US) | 12,607.1688312 tbsp (US) | 12,766.7532468 tbsp (US) | 12,926.3376623 tbsp (US) | 13,085.9220779 tbsp (US) | 13,245.5064935 tbsp (US) | 13,405.0909091 tbsp (US) | 13,564.6753247 tbsp (US) | 13,724.2597403 tbsp (US) | 13,883.8441558 tbsp (US) | 14,043.4285714 tbsp (US) | 14,203.0129870 tbsp (US) | 14,362.5974026 tbsp (US) | 14,522.1818182 tbsp (US) | 14,681.7662338 tbsp (US) | 14,841.3506494 tbsp (US) | 15,000.9350649 tbsp (US) | 15,160.5194805 tbsp (US) | 15,320.1038961 tbsp (US) | 15,479.6883117 tbsp (US) | 15,639.2727273 tbsp (US) | 15,798.8571429 tbsp (US) | 15,958.4415584 tbsp (US) |
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 tablespoons | board feet | US tablespoons |
|---|---|---|---|
| 1 | = 159.58441558442 | 6 | = 957.50649350649 |
| 2 | = 319.16883116883 | 7 | = 1117.0909090909 |
| 3 | = 478.75324675325 | 8 | = 1276.6753246753 |
| 4 | = 638.33766233766 | 9 | = 1436.2597402597 |
| 5 | = 797.92207792208 | 10 | = 1595.8441558442 |
US tablespoon is a unit of volume.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| US tablespoon | tbsp (US) | ≡ 1⁄2 US fl oz | = 14.78676478125×10−6 m3 | Imperial/US |
| US tablespoons | board feet | US tablespoons | board feet |
|---|---|---|---|
| 1 | = 0.0062662760416667 | 6 | = 0.03759765625 |
| 2 | = 0.012532552083333 | 7 | = 0.043863932291667 |
| 3 | = 0.018798828125 | 8 | = 0.050130208333333 |
| 4 | = 0.025065104166667 | 9 | = 0.056396484375 |
| 5 | = 0.031331380208333 | 10 | = 0.062662760416667 |
| board feet | US tablespoons |
|---|---|
| 1 | = 159.5844156 |
| 0.0062663 | = 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 …) |