Volume of Board Feet per Log = (D-4)2 x (L/16)
D = Diameter inside bark at the small end (inches)
L = Log length (feet)
How to Convert Doyle Log Scale to Cubic Meters
Example scale reads as follows (estimated):
- 7.1m3 = MBF (7"+)
- 6.2m3 = MBF (11"+)
- 5.8m3 = MBF (14"+)
- 4.6m3 = MBF (22"+)
- 4.2m3 = MBF (34"+)
There is no standard formula to convert Doyle scale MBF to cubic meters.
Diagram shows the number of 1-inch boards that can be cut from a specific log.
T = Nominal thickness (inches)
W= Nominal width (inches)
L = Length (feet)
Board Feet = T x W x L/12