43 free calculators for workshop infrastructure, woodworking, construction, electrical, and automotive projects. Get accurate measurements and material estimates for your next build.
Essential calculators for planning and equipping your workshop space.
Calculate CFM and HP requirements for your dust collection system.
Calculate →Size ductwork for optimal airflow and dust collection efficiency.
Calculate →Determine the right compressor size for your air tools.
Calculate →Size your workshop subpanel and circuits correctly.
Calculate →Find the right heater size for your workshop space.
Calculate →Calculate BTU capacity needed for mini-split AC/heat.
Calculate →Visualize and plan your workshop floor layout.
Plan →Calculate lumens and fixtures for proper workshop lighting.
Calculate →Size a backup generator for your workshop needs.
Calculate →Estimate monthly electricity costs for your workshop tools.
Calculate →Board feet, cut lists and dust runs all assume a machine on the other end. These are the ones that show up most across the calculators here.
DEWALT DWS780 12 in Sliding Miter Saw
Double bevel sliding cut, the saw most shop layouts here are built around
Check price on Amazon →
DEWALT DW734 12-1/2 in Benchtop Planer
Three-knife cutterhead, the cheapest route to dimensioning your own stock
Check price on Amazon →
DEWALT DW618PK Router Kit
Fixed and plunge bases in one kit, which covers table and handheld work
Check price on Amazon →
Central Machinery 2 HP Dust Collector
Two horsepower at five micron, sized for a one-person shop rather than a vac
Check price on Amazon →As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. Prices change, so check before buying.
Calculators for lumber, materials, finishes, and woodworking projects.
Calculate board feet for lumber purchases and pricing.
Calculate →Minimize waste with optimized plywood cut layouts.
Optimize →Calculate materials needed for cabinet construction.
Calculate →Calculate maximum span and expected sag for shelves.
Calculate →Find the ergonomic workbench height for your body.
Calculate →Calculate lumber and hardware for your workbench build.
Calculate →Calculate materials for a French cleat wall system.
Calculate →Calculate epoxy resin and hardener for river tables and fills.
Calculate →Estimate wood stain needed for your project.
Calculate →Calculate paint quantity for walls, furniture, and projects.
Calculate →Material calculators for outdoor structures and construction projects.
Calculate concrete volume in cubic yards for slabs, footings, and posts.
Calculate →Calculate gravel tonnage for driveways and landscaping.
Calculate →Calculate decking, joists, and hardware for your deck project.
Calculate →Calculate posts, rails, and pickets for fence construction.
Calculate →Calculate pavers, sand, and base material for patios and walkways.
Calculate →Calculate lumber and hardware for pergola construction.
Calculate →Calculate lumber and soil volume for raised garden beds.
Calculate →Calculate blocks, cap stones, and base material for retaining walls.
Calculate →Calculate shingles, underlayment, and roofing materials.
Calculate →Calculate complete materials list for shed construction.
Calculate →Calculate rise, run, and stringer dimensions for stairs.
Calculate →Calculate drywall sheets, tape, and mud for your project.
Calculate →Calculators for electrical wiring and conduit sizing.
Calculators for automotive, mechanical, and garage projects.
Find correct drill sizes for standard and metric taps.
View Chart →Get the right RPM for any bit size and material, wood, metal, or plastic.
Calculate RPM →Exact cut angles for frames, boxes, and trim, plus crown molding compound angles.
Calculate Angle →Calculate weight of steel, aluminum, and other metals.
Calculate →Calculate driven pulley speed and belt length.
Calculate →Calculate gear ratios and output speeds.
Calculate →Calculate engine compression ratio from bore and stroke.
Calculate →Find oil capacity for engines and transmissions.
Calculate →Compare tire sizes and calculate speedometer variance.
Calculate →Plan shelving, cabinets, and storage for your garage.
Calculate →Estimate total cost to build and equip your workshop.
Estimate →