US Fluid Ounces to Board Feet (fl oz to bf)
1 US fluid ounce equals 0.01253255208 board feet (rounded).
How to convert US fluid ounces to board feet
To convert US fluid ounces to board feet, multiply the number of US fluid ounces by 0.01253255208. The factor is rounded to 10 significant digits. To go the other way, multiply board feet by 79.79220779 (rounded).
board feet = US fluid ounces × 0.01253255208
Example: 10 US fluid ounces = 0.1253255208 board feet.
Pints, quarts, gallons and fluid ounces differ between the US and the UK. Units are labeled 'US' or 'imperial' to avoid confusion.
About these units
US Fluid Ounce (fl oz)
One 128th of a US gallon, 29.5735 mL. Not the same as the weight ounce, and about 4% larger than the imperial fluid ounce.
Fluid ounce began as an attempt to link volume to weight: the volume occupied by one ounce of some substance, such as wine in England or water in Scotland. Definitions varied by region and by liquid. When Britain defined its imperial gallon in 1824 as the space of ten pounds of water, the imperial fluid ounce came out so that an ounce of water weighs about one avoirdupois ounce. The US fluid ounce followed a different path and comes from the older wine gallon.
The US fluid ounce is exactly 1/128 of a US gallon, 29.5735295625 milliliters, about 4 percent bigger than the imperial one at 28.4130625 milliliters. American nutrition labels use yet another figure, treating one fluid ounce as 30 milliliters, a convenient rounding for serving sizes. The name is a trap, because a fluid ounce measures space while a weight ounce measures mass. A US fluid ounce of water weighs a bit more than an ounce of weight, while a fluid ounce of honey weighs considerably more.
1 US fluid ounce = 0.02957352956 liters (approximately).
Sources: Wikipedia: Fluid ounce; NIST SP 811, Appendix B.8: conversion factors for volume; 21 CFR 101.9: nutrition labeling household measures
Board Foot (bf)
144 cubic inches, a board 1 ft × 1 ft × 1 in. The standard unit for lumber in North America.
Lumber buyers in North America price timber by the board foot, the volume of a board 1 foot long, 1 foot wide and 1 inch thick. That is 144 cubic inches, one twelfth of a cubic foot, or about 2.36 liters. Thousands of board feet are written MBF, a shorthand common in sawmill and timber sale contracts.
A quirk makes the unit slightly slippery. Rough lumber is measured at its full sawn size, but planed softwood such as a retail two-by-four is counted by its nominal dimensions even though the finished board is smaller, so the calculated footage overstates the wood actually present. Hardwoods are measured at actual size and avoid this gap.
Foresters also estimate how many board feet a log will yield using log rules such as the Doyle rule, which allow for taper, saw kerf and waste. In Australia and New Zealand the same quantity was called the super foot or superficial foot until the 1970s. Related timber units include the cord, the Hoppus foot and the stere.
1 board foot = 2.359737216 liters (exactly).
Sources: Wikipedia: Board foot; Wikipedia: Stere
Related conversions
- Board feet to US fluid ounces (reverse)
- US fluid ounces to liters
- US fluid ounces to milliliters
- US fluid ounces to US gallons
- US fluid ounces to US cups
- US fluid ounces to cubic meters
- US fluid ounces to cubic centimeters
- US fluid ounces to US quarts
- US fluid ounces to US pints
- US fluid ounces to US tablespoons
- US fluid ounces to US teaspoons
- US fluid ounces to metric cups
- US fluid ounces to metric tablespoons
- Liters to board feet
- Milliliters to board feet
- US gallons to board feet
- US cups to board feet
See all volume units.