Log board foot calculator

Formula

The formulas used to calculate the volumes are:

• Cubic Feet: \[ \text{Cubic Feet} = 0.005454 \times d^2 \times L \]
• Cubic Meters: \[ \text{Cubic Meters} = \text{Cubic Feet} \times 0.0283168 \]
• Champlain log rule: \[ \text{Champ} = 0.62832 \times (d^2 - d) \times \frac{L}{12} \]
• Clements log rule: \[ \text{Clem} = 0.7854 \times (d^2 - 2d) \times \frac{L}{16} \]
• British Columbia log rule: \[ \text{BC} = 0.0476 \times (d - 1.5)^2 \times L \]
• Brereton log rule: \[ \text{Brer} = 0.06545 \times d^2 \times L \]
• Doyle log rule: \[ \text{Doyle} = (d - 4)^2 \times \frac{L}{16} \]
• Ontario log rule: \[ \text{Ontario} = \frac{0.55 \times d^2 - 1.2 \times d}{12} \times L \]
• Scribner log rule: \[ \text{Scribner} = 0.0494 \times d^2 \times L - 0.124 \times d \times L - 0.269 \times L \]
• Spaulding log rule: \[ \text{Spault} = \frac{0.778 \times d^2 - 1.125 \times d - 13.482}{16} \times L \]