Measure it. Calculate it. Cut it.
Fast, practical calculators for lumber dimensions, wood weight, board feet, sheet goods, cut planning and material estimates — built for real workshop and jobsite questions.
Calculators that answer the next question too
Each tool is designed around a practical decision: how much material, what it weighs, what it costs, or how to cut it with less waste.
Lumber weight
Estimate board weight from actual dimensions, length, species, moisture and quantity.
Open calculator →Board foot
Calculate board feet, waste allowance, cubic feet and estimated lumber cost.
Open calculator →Sheet weight
Estimate plywood, OSB, MDF and particleboard weight in metric or imperial sizes.
Open calculator →Plywood cut list optimizer
Lay labeled parts onto sheet goods with kerf, edge trim, grain locks and a printable visual plan.
Optimize cuts →Wood movement
Estimate seasonal width change from species, grain direction and moisture change.
Estimate movement →Deck boards
Estimate rows, linear feet, stock-length equivalents and fasteners from deck geometry.
Plan decking →Linear cut list
Fit repeated lengths into stock boards with kerf, end trim, waste totals and a board-by-board visual plan.
Optimize board cuts →Numbers with context
Reference pages explain what the numbers mean, their source and where real material can vary.
Nominal vs. actual lumber sizes
Interactive U.S. softwood lumber size table with inch and metric dimensions.
See lumber sizes →Wood density planning table
Representative dry-density values for common species, linked directly into the weight calculator.
Compare densities →Why a 2×4 is not 2×4
A concise guide to nominal names, dressing, moisture and what to measure before a tight fit.
Read the guide →Useful estimates, transparent assumptions
WUDIM separates standardized dimensions from natural-material estimates. Softwood size references use the current U.S. Department of Commerce PS 20-25 standard administered by NIST. Wood-weight and movement tools use published USDA Forest Products Laboratory properties as planning inputs. Density, moisture, manufacturing and species variation mean any calculated weight or movement remains an estimate.