LUMBER WEIGHT REFERENCE
The lumber weight reference library
Dedicated guides to lumber weight, species density, actual dimensions and moisture, with shipping references when needed.
Density & evidence
Density & evidence
Choose a density with a usable basis
Match the density input to the product, measurement method and moisture condition you are actually estimating.
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Density and specific gravity are different inputs
Understand why a dimensionless specific-gravity entry cannot simply be typed into a pounds-per-cubic-foot field.
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Use a measured sample without overstating it
Record mass, physical volume, condition and sample scope before using a measured density in a larger estimate.
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Show uncertainty with a density range
Use separate, labeled scenarios to see how uncertainty affects the result without calling the range a confidence interval.
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Hardwood weight requests: what to ask the supplier
Prepare a specific weight-information request for Ipe, Cumaru and other hardwood products without assuming a species average is a shipping guarantee.
Open resource ↗Volume & units
Volume & units
Use actual dimensions for a physical weight estimate
Distinguish a product designation, a commercial tally and the dimensions of the physical material being moved.
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Board feet to weight: check the tally first
One board foot is a volume unit, but the number on a commercial tally may use a different measurement convention.
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Calculate lumber weight in metric units
Keep millimeters, meters, cubic meters and kilograms aligned through the complete calculation.
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Weight estimates for grooved and profiled lumber
Recognize when width × thickness describes an envelope rather than the actual material section.
Open resource ↗Moisture
Moisture
What moisture basis means on a weight record
Read dry-basis moisture content correctly and separate a measured condition from a drying label.
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Green and dry lumber: compare conditions, not labels
Understand the inputs needed before estimating how a change in moisture affects the weight of the same wood.
Open resource ↗Bundles & freight
Bundles & freight
Estimate a mixed lumber bundle
Build a line-by-line total for boards that do not share one size, count or density basis.
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Net, gross and tare for lumber shipments
Separate the material subtotal from pallets, wrapping, stickers and other shipment components.
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When to replace an estimate with a weighing
Recognize what a geometric model can explain and what it cannot establish about an actual shipment.
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