Spike's Calculators

A version based on the Hoppus method known as the Burt's Quarter Girth Method formula for calculating the true volume of a log.

V = G² ÷ 4 * L ÷ 113V = volume

G = girth measured mid length of the log

L = length of log in feet

- the length of the log in feet
- the circumference of the log taken mid-length measured in inches

- volume of log

V = ((Dt + Db) ÷ 2 )² * L ÷ 183V = volume of log

Dt = diameter top end log

Db = diameter large end of log

L = length of log

- the length of the log in feet
- diameter large end of log
- diameter top end of log

- volume of the log

- Brereton Log Rule - Metric Measurements
- Burt's Quarter Girth Method
- Chinese National Standard
- Cubic Metre Rule
- Francon Measure
- Hoppus Rule
- Huber's Formula
- Huber's Formula - Metric
- Ireland - Log Volume Measurement
- Japanese Agricultural Standard (JAS)
- Manitoba - Cubic Method
- Newton's Formula
- Nova Scotia Cubic Metre Log Scale
- Pressler's Cubic Foot Formula
- Smalian's Formula - Metric
- Smalian's Formula - Imperial
- Solid Volume of a Log
- Spike's Rule
- Swedish Log Volume Calculation
- Swedish Log Volume Calculation Method One
- Swedish Log Volume Calculation Method Two
- Swedish Log Volume Calculation Method Three
- William Klemme