Construction Calculators

153 free construction tools — instant answers, no signup.

Whether you're renovating a kitchen, sizing a roof, planning a deck, ordering concrete, or estimating drywall, getting the quantities right saves real money. Our construction calculators are built for carpenters, electricians, contractors, and DIY homeowners alike — covering everything from board feet and stair stringers to wire gauge and rebar spacing. Compute once, order once, build right.

AC Tonnage Calculator Air Changes Per Hour Calculator Air Conditioner BTU Calculator Aluminum Weight Calculator Angle Cut Calculator Angle of Depression Calculator Arch Calculator Asphalt Calculator Baluster Calculator Beam Deflection Calculator Beam Load Calculator Bending Stress Calculator Birdsmouth Cut Calculator Board Foot Calculator Board and Batten Calculator Board-on-Board Fence Calculator Boiler Size Calculator Bolt Circle Calculator Bolt Torque Calculator Bowl Segment Calculator Box Fill Calculator Brick Calculator CFM Calculator Carbon Equivalent Calculator Carpet Calculator Cement Calculator Chicken Coop Size Calculator Clearance Hole Calculator Concrete Block Calculator Concrete Block Fill Calculator Concrete Column Calculator Concrete Cylinder Calculator Concrete Driveway Cost Calculator Concrete Slab Calculator Concrete Stairs Calculator Concrete Tube Calculator Concrete Weight Calculator Countersink Depth Calculator Crushed Stone Calculator Cubic Yard Calculator DIY Shed Cost Calculator Deck Stain Calculator Decking Calculator Door Header Size Calculator Drywall Calculator Elevation Grade Calculator Epoxy Calculator Fence Calculator Fence Cost Calculator Fence Estimate Calculator Fence Material Calculator Fence Perimeter Calculator Fence Picket Calculator Fence Post Depth Calculator Fire Flow Calculator Fire Glass Calculator Floor Area Ratio Calculator Floor Joist Calculator Flooring Calculator Framing Calculator French Drain Calculator Furnace Size Calculator Gallons Per Minute Calculator Gallons Per Square Foot Calculator Gambrel Roof Calculator Glass Weight Calculator Gravel Calculator Gravel Driveway Calculator Grout Calculator Heat Loss Calculator Hole Volume Calculator Hoop House Calculator Insulation Calculator Junction Box Sizing Calculator K-factor Calculator Ladder Angle Calculator Limestone Calculator Liters Per Minute Calculator Log Weight Calculator Lumber Calculator Lumber Weight Calculator Material Removal Rate Calculator Metal Roof Cost Calculator Metal Weight Calculator Miter Angle Calculator Mortar Calculator Paint Calculator Paver Calculator Paver Sand Calculator Pipe Volume Calculator Pipe Weight Calculator Pitch Diameter Calculator Plate Weight Calculator Plywood Calculator Pond Calculator Pool Volume Calculator Post Hole Concrete Calculator Privacy Fence Calculator Punch Force Calculator Rafter Length Calculator Ramp Slope Calculator Rebar Calculator Retaining Wall Calculator Rip Rap Calculator River Rock Calculator Rivet Size Calculator Road Base Calculator Rolling Offset Calculator Roof Pitch Calculator Roof Shingle Calculator Roof Truss Calculator Roofing Calculator Round Pen Calculator SAG Calculator Sand Calculator Sealant Calculator Shiplap Calculator Siding Calculator Size to Weight Calculator for Rectangular Boxes Snow Load Calculator Sonotube Calculator Spindle Spacing Calculator Spindle Speed Calculator Spiral Staircase Calculator Square Feet to Cubic Yards Calculator Square Footage Calculator Square Meter Calculator Square Yard Calculator Square Yards Calculator Stair Carpet Calculator Stairs Calculator Steel Plate Weight Calculator Steel Weight Calculator Stone Calculator Tank Volume Calculator Taper Calculator Thinset Calculator Thread Calculator Thread Pitch Calculator Tile Calculator Tonnage Calculator True Position Calculator Trump's Wall Calculator Vertical Curve Calculator Vinyl Fence Calculator Vinyl Fence Cost Calculator Vinyl Siding Calculator Wainscoting Calculator Wall Square Footage Calculator Wallpaper Calculator Welding Calculator Wood Beam Span Calculator Wood Fence Calculator