| 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 food labelling fluid ounce | 78.6579072 US fl oz | 157.3158144 US fl oz | 235.9737216 US fl oz | 314.6316288 US fl oz | 393.289536 US fl oz | 471.9474432 US fl oz | 550.6053504 US fl oz | 629.2632576 US fl oz | 707.9211648 US fl oz | 786.579072 US fl oz | 865.2369792 US fl oz | 943.8948864 US fl oz | 1,022.5527936 US fl oz | 1,101.2107008 US fl oz | 1,179.868608 US fl oz | 1,258.5265152 US fl oz | 1,337.1844224 US fl oz | 1,415.8423296 US fl oz | 1,494.5002368 US fl oz | 1,573.158144 US fl oz | 1,651.8160512 US fl oz | 1,730.4739584 US fl oz | 1,809.1318656 US fl oz | 1,887.7897728 US fl oz | 1,966.44768 US fl oz | 2,045.1055872 US fl oz | 2,123.7634944 US fl oz | 2,202.4214016 US fl oz | 2,281.0793088 US fl oz | 2,359.737216 US fl oz | 2,438.3951232 US fl oz | 2,517.0530304 US fl oz | 2,595.7109376 US fl oz | 2,674.3688448 US fl oz | 2,753.026752 US fl oz | 2,831.6846592 US fl oz | 2,910.3425664 US fl oz | 2,989.0004736 US fl oz | 3,067.6583808 US fl oz | 3,146.316288 US fl oz | 3,224.9741952 US fl oz | 3,303.6321024 US fl oz | 3,382.2900096 US fl oz | 3,460.9479168 US fl oz | 3,539.605824 US fl oz | 3,618.2637312 US fl oz | 3,696.9216384 US fl oz | 3,775.5795456 US fl oz | 3,854.2374528 US fl oz | 3,932.89536 US fl oz | 4,011.5532672 US fl oz | 4,090.2111744 US fl oz | 4,168.8690816 US fl oz | 4,247.5269888 US fl oz | 4,326.184896 US fl oz | 4,404.8428032 US fl oz | 4,483.5007104 US fl oz | 4,562.1586176 US fl oz | 4,640.8165248 US fl oz | 4,719.474432 US fl oz | 4,798.1323392 US fl oz | 4,876.7902464 US fl oz | 4,955.4481536 US fl oz | 5,034.1060608 US fl oz | 5,112.763968 US fl oz | 5,191.4218752 US fl oz | 5,270.0797824 US fl oz | 5,348.7376896 US fl oz | 5,427.3955968 US fl oz | 5,506.053504 US fl oz | 5,584.7114112 US fl oz | 5,663.3693184 US fl oz | 5,742.0272256 US fl oz | 5,820.6851328 US fl oz | 5,899.34304 US fl oz | 5,978.0009472 US fl oz | 6,056.6588544 US fl oz | 6,135.3167616 US fl oz | 6,213.9746688 US fl oz | 6,292.632576 US fl oz | 6,371.2904832 US fl oz | 6,449.9483904 US fl oz | 6,528.6062976 US fl oz | 6,607.2642048 US fl oz | 6,685.922112 US fl oz | 6,764.5800192 US fl oz | 6,843.2379264 US fl oz | 6,921.8958336 US fl oz | 7,000.5537408 US fl oz | 7,079.211648 US fl oz | 7,157.8695552 US fl oz | 7,236.5274624 US fl oz | 7,315.1853696 US fl oz | 7,393.8432768 US fl oz | 7,472.501184 US fl oz | 7,551.1590912 US fl oz | 7,629.8169984 US fl oz | 7,708.4749056 US fl oz | 7,787.1328128 US fl oz | 7,865.79072 US fl oz |
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 food labelling fluid ounces | board feet | US food labelling fluid ounces |
|---|---|---|---|
| 1 | ≡ 78.6579072 | 6 | ≡ 471.9474432 |
| 2 | ≡ 157.3158144 | 7 | ≡ 550.6053504 |
| 3 | ≡ 235.9737216 | 8 | ≡ 629.2632576 |
| 4 | ≡ 314.6316288 | 9 | ≡ 707.9211648 |
| 5 | ≡ 393.289536 | 10 | ≡ 786.579072 |
A fluid ounce (abbreviated fl oz, fl. oz. or oz. fl., old forms ℥, fl ℥, f℥, ƒ ℥) is a unit of volume (also called capacity) typically used for measuring liquids. Various definitions have been used throughout history, but only two are still in common use: the British Imperial and the United States customary fluid ounce. An imperial fluid ounce is 1⁄20 of an imperial pint, 1⁄160 of an imperial gallon or approximately 28.4 ml. A US fluid ounce is 1⁄16 of a US fluid pint and 1⁄128 of a US liquid gallon or approximately 29.57 ml, making it about 4% larger than the imperial fluid ounce.
US food labelling fluid ounce
US regulation 21 CFR 101.9(b)(5)(viii) also defines a fluid ounce as exactly 30 millilitres, but this is for use in nutrition labelling only.
| 30 millilitres | ≈ | 1.055852392 | imperial fluid ounces |
| ≈ | 1.014420681 | US customary fluid ounces | |
| ≈ | 1.830712323 | cubic inches |
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| US food labelling fluid ounce | US fl oz | ≡ 30 mL | ≡ 3×10−5 m3 | Imperial/US |
| US food labelling fluid ounces | board feet | US food labelling fluid ounces | board feet |
|---|---|---|---|
| 1 | ≡ 0.012713280019736 | 6 | ≡ 0.076279680118415 |
| 2 | ≡ 0.025426560039472 | 7 | ≡ 0.088992960138151 |
| 3 | ≡ 0.038139840059208 | 8 | ≡ 0.10170624015789 |
| 4 | ≡ 0.050853120078944 | 9 | ≡ 0.11441952017762 |
| 5 | ≡ 0.063566400098679 | 10 | ≡ 0.12713280019736 |
| board feet | US food labelling fluid ounces |
|---|---|
| 1 | ≡ 78.6579072 |
| 0.0127133 | ≡ 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 …) |