Structural & Carpentry Calculators

Calculate beam bending moment, shear force, and deflection. Enter span, load type, and beam size — see moment diagram with NDS allowable stress check. Free.

Calculate column axial load capacity. Enter column size, height, material, and end conditions — see allowable load with slenderness ratio check. Free.

Calculate spread footing size from column load and soil bearing capacity. Enter load and soil capacity — see minimum footing area and depth per IBC. Free.

Calculate concrete mix proportions (cement, sand, gravel, water) per ACI 318. Enter design strength and volume — see material quantities in bags and cubic yards. Free.

Calculate rebar quantity, weight, and spacing for slabs and walls. Enter dimensions and reinforcement ratio — see bar count, weight, and minimum cover per ACI. Free.

Calculate formwork area and material quantities for concrete pours. Enter slab, wall, or column dimensions — see form area, plywood sheets, and lumber needed. Free.

Calculate CMU block count for a wall. Enter wall dimensions and block size — see block count, mortar bags, and block weight with waste allowance. Free.

Calculate bricks required for a wall or building. Enter dimensions, bond pattern, and mortar joint size — see brick count, mortar volume, and waste factor. Free.

Calculate mortar quantity for brickwork or blockwork. Enter wall area, joint size, and mix ratio — see mortar volume in bags and cubic feet. Free.

Calculate tile quantity for floor or wall installation. Enter area dimensions, tile size, and layout pattern — see tile count with waste factor and adhesive needed. Free.

Calculate grout quantity for tile installation. Enter tile size, joint width, and grout depth — see grout weight per square foot with bag count. Free.

Calculate stud spacing and count for a wall frame. Enter wall length and OC spacing (16" or 24") — see stud count with header and cripple stud allowance. Free.

Calculate board feet of lumber from dimensions. Enter thickness, width, and length — see board feet, linear feet, and lumber cost at your price per MBF. Free.

Calculate total lumber material cost for a framing project. Enter member sizes, quantities, and price per lineal foot — see material cost with waste factor. Free.

Calculate roof pitch, slope angle, and rafter length. Enter rise and run — see pitch ratio (e.g., 6:12), angle in degrees, and multiplier for area. Free.

Calculate common, hip, and valley rafter lengths. Enter span, pitch, and overhang — see cut lengths with bird's mouth and tail cut dimensions. Free.

Calculate OSB or plywood sheathing sheets for walls and roofs. Enter area dimensions and panel size — see sheet count with waste factor and nailing schedule. Free.

Calculate insulation material quantity and R-value requirements. Enter wall/ceiling area and climate zone — see required R-value, batt rolls, or blown-in bags. Free.

Calculate drywall sheets for walls and ceilings. Enter room dimensions and sheet size — see sheet count with waste factor, joint compound, and tape needed. Free.

Calculate flooring material quantity for any floor covering type. Enter room dimensions, plank size, and layout pattern — see material needed with waste %. Free.

Calculate subfloor panel quantity and fastener schedule. Enter floor area, joist spacing, and panel size — see sheets needed with glue and screw counts. Free.

Calculate gallons of paint needed for a room. Enter wall, ceiling, and trim area with coats — see paint gallons with waste and primer quantities. Free.

Calculate door rough opening dimensions from slab size. Enter door width and height — see RO with header size, jack stud, and king stud layout. Free.

Calculate window rough opening size from window unit dimensions. Enter window width and height — see RO with sill, jack, and king stud framing layout. Free.

Calculate deck joist size and spacing from span per AWC span tables. Enter span, species, and load — see minimum joist size with IBC code reference. Free.

Calculate deck board quantity from deck area and board width. Enter dimensions and gap — see board count, lineal footage, and material cost estimate. Free.

Calculate fence post count, post hole size, and concrete needed. Enter fence length and post spacing — see post count, hole volume, and concrete bags. Free.

Calculate post hole depth and diameter for fence or deck posts. Enter post height, frost depth, and soil type — see required hole dimensions and concrete volume. Free.

Calculate retaining wall block quantity and drainage requirements. Enter wall length, height, and block size — see block count and backfill drainage material. Free.

Calculate excavation volume and truckload count. Enter pit dimensions and swell factor — see cubic yards, tonnes, and number of dump truck loads. Free.

Calculate fill dirt or topsoil quantity. Enter area and depth — see cubic yards, cubic metres, and truckload count with compaction factor. Free.

Calculate gravel, crushed stone, or pea gravel for driveways and paths. Enter area and depth — see cubic yards, tonnes, and bulk bag count. Free.

Calculate asphalt tonnage for driveways and pavements. Enter area, depth, and mix density — see tonnes, truckload count, and cost estimate. Free.

Calculate vinyl, fiber cement, or wood siding quantity. Enter wall area, panel size, and exposure — see squares needed with waste factor and J-channel. Free.

Calculate fascia and soffit material for a roofline. Enter perimeter and overhang width — see linear feet of fascia, soffit area, and venting requirements. Free.