Spike's Calculators

Log volumes will be measured in cubic metres to three places of decimal (0.001)

Formula assumes a taper of 1 cm for each 0.75 m of length.

Logs longer than 5.6 m (metres) in length will be scaled in two or more sections

Log diameters shall be measured inside bark in 2 cm size classes with the boundary between size classes on the odd centimetre.

Conversions to cubic feet and board feet are made from the cubic meters result.

- Brereton Log Rule - Metric Measurements
- Burt's Quarter Girth Method
- Chinese National Standard
- Cubic Metre Rule
- Francon Measure
- Hoppus Rule
- Huber's Formula
- 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