Spike's Calculators


Pressler's Cubic Foot Formula

Spike VM Pressler's Formula

A cubic foot formula for estimating tree volume. This formula suits trees whose shape approximates that of a cone or a paraboloid.

The length of the tree is taken from the point where the lower diameter is measured well above the butt swell to a point where the diameter of the log equals one half of the the lower diameter.

Diameter Measured Inside Bark = DIB
Length in Feet ft
DIB Measured Above Butt Swell inch


Volume in Cubic Feet: ft³
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