Spike's Calculators

Logging

Francon Measure

Spike VM

The Francon Measure is the Hoppus foot rule in metric format, resulting in Francon cubic metres (fr. M³).

Circumference of Log Measured Mid Length
Log Circumference cm
Length of Log M

Results:

Francon Cubic Metres: Fr M³
Log Volume in Cubic Metres: M³

Calculator

  1. enter the circumference measured mid-length of the log in centimetres
  2. enter the log's length in metres

Result

  1. the volume of the log in Francon cubic metres
  2. the volume of the log in cubic metres

Formula

V = (G ÷ 4)² * L ÷ 10000
V = volume in Francon cubic metres
G = girth measured mid point of the log in centimetres
L = length of log in metres

Conversions:

one Francon cubic metre (fr. M³) = 1.27324 cubic metres (m³)
one Francon cubic metre (fr. M³) = 44.964 cubic feet (ft³)

Cubic Volume Log Rule Calculators

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