Convert Board Foot to Cubic Foot
Convert board feet to cubic feet instantly. 1 board foot = 0.0833333333 cubic foot — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Cubic Foot to Board Foot converter for the reverse conversion.
Units explained
Board Foot
A board foot is 144 cubic inches (2.35974 L), nominally 1 ft × 1 ft × 1 in of lumber.
A traditional measure of sawn-timber volume.
Standard for pricing hardwood lumber in North America.
North American lumber trade.
Cubic Foot
A cubic foot is the volume of a cube one foot on a side (28.3168 L).
Derived by cubing the international foot (0.3048 m).
Used for natural gas, refrigerators, shipping and HVAC.
1959 yard agreement.
Board Foot to Cubic Foot conversion formula
The relationship between board feet and cubic feet:
To convert board feet to cubic feet, multiply the value in board feet by 0.0833333333. To reverse, multiply cubic feet by 12.
How to use this converter
Type a value into the calculator. The result in cubic feet updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Cubic Foot to Board Foot converter for the reverse direction.
Step-by-step: convert board feet to cubic feet
- Write down the value in board feet (bf).
- Multiply that value by the factor 0.0833333333.
- The product is the equivalent value in cubic feet (ft³).
- To reverse, multiply the cubic foot value by 12.
Worked examples
Example 1 — Convert 1 bf to ft³:
1 × 0.0833333333 = 0.0833333333 ft³
Example 2 — Convert 100 bf to ft³:
100 × 0.0833333333 = 8.3333333333 ft³
Real-world example — Hardware-scale dimensions
A 10-board foot fastener or component is about as long as a thumbnail. Mechanics and DIY enthusiasts convert between board feet and cubic feet daily when mixing metric and imperial tools.
10 bf × 0.0833333333 = 0.8333333333 ft³
Real-world example — Postcard and small-object dimensions
A postcard is about 5 board feet wide. Converting to cubic feet is essential for international postal addressing forms that ask for dimensions in different units across countries.
5 bf × 0.0833333333 = 0.4166666667 ft³
Real-world example — Ruler-scale measurements
A 30-board foot school ruler converts cleanly to cubic feet — useful when buying a desk accessory from a retailer whose product specs use a different unit.
30 bf × 0.0833333333 = 2.5 ft³
Board Foot to Cubic Foot conversion table
Standard reference values for converting board feet to cubic feet:
| Board Foot [bf] | Cubic Foot [ft³] |
|---|---|
| 0.01 | 0.0008333333 |
| 0.1 | 0.0083333333 |
| 1 | 0.0833333333 |
| 2 | 0.1666666667 |
| 3 | 0.25 |
| 4 | 0.3333333333 |
| 5 | 0.4166666667 |
| 10 | 0.8333333333 |
| 20 | 1.6666666667 |
| 30 | 2.5 |
| 40 | 3.3333333333 |
| 50 | 4.1666666667 |
| 100 | 8.3333333333 |
| 500 | 41.6666666667 |
| 1000 | 83.3333333333 |
Frequently asked questions
How many cubic feet is 1 board foot?
How do I convert board feet to cubic feet?
How do I convert cubic feet back to board feet?
How many cubic feet is 100 board feet?
Popular volume unit conversions
Convert Board Foot to other volume units
Show all Board Foot conversions
Metric / SI (3 units)
US Customary (Liquid) (1 units)
Imperial (UK) (1 units)
Cubic (length-derived) (1 units)
Sources & references
Conversion factor (1 bf = 0.0833333333 ft³) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.