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BD FT 計算機
Weight Estimation

木材重量計算機

Calculate wood weight from board feet and species density.

Weight Calculator

Calculate weight from board feet and wood species

Note: Weights are approximate. Actual weight varies by specific gravity, moisture content, and wood condition. Green lumber (>19% MC) weighs significantly more.

Moisture Content

  • Green: 50-100% (freshly cut)
  • Air-dried: 15-20%
  • Kiln-dried: 6-12%

Wood Density Ranges

  • Softwoods: 20-35 lbs/cu ft
  • Hardwoods: 35-55 lbs/cu ft
  • Exotic: 40-70 lbs/cu ft

Weight Factors

  • Species density
  • Moisture content
  • Specific gravity
  • Wood condition

よくある質問

How much does a board foot of oak weigh?
Red oak at 12% moisture content weighs approximately 3.75 lbs per board foot. White oak is slightly heavier at about 3.9 lbs/BF.
Does moisture content affect weight significantly?
Yes! Green lumber can weigh 2-3 times more than kiln-dried. Water adds significant weight. A board at 50% MC weighs much more than the same board at 12% MC.
How do I calculate shipping weight?
Calculate total weight, add 10-15% for packaging/pallets. Standard pallet holds ~2,000 lbs. Full truck load is typically 40,000-45,000 lbs.

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