Calculate the volume of a log using Newton's Formula.

One calculator for Imperial units and one for Metric units.

Newton's formula is the standard against which other cubic formula's are compared. The top, middle and base diameters are used with the log length for the determination of cubic volume.

For imperial units the volume is in cubic feet.
For metric units the volume is in cubic metres.

diameter small end + diameter large end / 2 = DIB mid section

Newton's Formula - Imperial

Diameter Measured Inside Bark = DIB
Length of Log in Feet	ft
DIB Measured Small End	inch
DIB Measured Mid Section	inch
DIB Measured Large End	inch
Results:
Log Volume in Cubic Feet ft³

Newton's Formula - Metric

Diameter Measured Inside Bark = DIB
Length of Log in Metres	M
DIB Measured Small End	cm
DIB Measured Mid Section	cm
DIB Measured Large End	cm
Results:
Log Volume in Cubic Metres M³