Expert Guide
Wood & Timber
Log Volume Calculator (Round Timber)
Quality Inspector
Specialized tool for estimating volume of round tree logs using the Quarter Girth method.
📐 Formula & Method
Hoppus Rule (Quarter Girth) = (Girth/4)² × Length. This method accounts for the slab waste during sawing.
Hoppus Volume = (Girth/4)² × L
📋 Worked Example
Log with 10ft length and 4ft girth: • Quarter Girth = 1ft • Volume = (1)² × 10 = 10 CFT
❓ Frequently Asked Questions
Hoppus rule (Quarter Girth) is a traditional trade measurement that gives the approximate volume of square timber that can be recovered from a round log, effectively discounting the "waste" corners.
Professional House Estimation
Get a complete, itemized cost breakdown and material list for your entire project with Nirmansutra Pro.