ganak.appConstruction Calculators
78 calculators · Updated Jul 2026
Estimate materials and measurements for construction projects. Calculate concrete, asphalt, and gravel quantities, plan fencing, and measure square footage for rooms and walls.
Popular in Construction
Concrete Calculator
Calculate concrete yards, cubic feet, cubic meters, bags, weight, and cost for slabs, pads, footings, walls, columns, stairs, and curbs.
Square Footage Calculator
Free square footage calculator for rooms, walls, and irregular shapes. Calculate area in sq ft, sq m, sq yd, and acres with waste factor and cost estimation.
Fence Calculator
Free fence calculator: estimate posts, pickets, panels, concrete & cost. Compare wood, chain link, vinyl & picket fences with DIY vs pro cost breakdown.
All Construction Calculators
Asphalt Calculator
Calculate asphalt tons, cubic yards, truckloads, and material cost for driveways, roads, and parking lots. Supports hot mix, millings, metric, and imperial units.
Tarmac Calculator
Estimate tarmac tonnage, volume, and cost for driveways, roads, and parking lots. Supports hot mix, warm mix, cold mix, and porous tarmac.
Gravel Calculator
Calculate gravel needed in tons, tonnes, cubic yards, and cubic meters. Estimate pea gravel, crushed stone, driveway gravel, waste, truck loads, and cost.
Soil Calculator
Estimate soil volume in cubic yards or meters for gardens, raised beds, and landscaping. Includes bag count, weight, and cost for topsoil and more.
Topsoil Calculator
Calculate how much topsoil you need in cubic yards, tons, and bags. Supports 10 topsoil types, 9 project presets, 3 area shapes, and cost estimation for lawns, gardens, raised beds, and landscaping.
Insulation Calculator
Estimate how much insulation you need for attics, walls, floors, and ceilings. Calculate R-value, thickness, blown-in bags, batt packages, boards, and cost.
Sand Calculator
Estimate how much sand you need in tons, cubic yards, and bags. Supports 12 sand types, 3 area shapes, project presets, and cost estimation for sandboxes, pavers, pools, and more.
Room Square Footage Calculator
Calculate room or floor area in square feet for flooring, carpet, tile, and paint projects. Enter length and width to get instant area with conversions.
Multi-Room Square Footage Calculator
Calculate total square footage for multiple rooms at once. Add rooms with quantities for apartments or commercial spaces. Combined area and cost.
Wall Area Calculator
Calculate wall area for painting or wallpaper, subtracting doors and windows. Get material estimates with waste factor for paint coverage and wallpaper rolls.
Shapes Area Calculator
Calculate area for irregular shapes: rectangles, circles, rings, triangles, trapezoids, sectors, and parallelograms. Great for roofing, landscaping, and decks.
Brick Calculator
Use this brick calculator to estimate how many bricks you need for a wall. Enter wall size, brick size, mortar joint, openings, and waste allowance.
Concrete Block Calculator
Free concrete block calculator for CMU/cinder block walls. Estimate blocks, mortar, grout fill, openings, waste, and optional material or labor cost.
Paint Calculator
Free paint calculator. Enter room or house dimensions to get exact gallons needed, quart breakdown, primer estimate, and cost for any surface.
Mulch Calculator
Estimate mulch volume in cubic yards, feet, or meters for gardens and landscaping. Bag count, weight, and cost for hardwood, cedar, pine bark, and more.
Pine Straw Calculator
Free pine straw calculator. Enter bed dimensions and depth to get bale count, coverage per bale, weight, and cost. Long needle, short needle, and roll types.
Septic Tank Size Calculator
Free septic tank size calculator. Enter bedrooms or occupants to get recommended tank capacity, dimensions, pumping schedule, and drainfield size.
Stair Calculator
Calculate stair dimensions instantly. Get riser height, tread depth, stringer length, stair angle, and building code compliance with an interactive diagram.
Rebar Calculator
Free rebar calculator. Estimate rebar quantity, spacing, weight, and cost for slabs, footings, and walls. Instant results with bar size reference chart.
Roofing Calculator
Free roofing calculator. Estimate roof area from building dimensions and pitch for gable, hip, flat, and shed roofs. Get roofing squares, material quantities with waste factor, rafter length, and cost estimate for shingles, metal, tile, slate, and wood shakes.
Roof Size Calculator
Free roof size calculator. Estimate your roof area in square feet from building dimensions and pitch. Works for gable, hip, flat, and shed roofs with waste factor and cost estimate.
Solar Panel Calculator
Free solar panel calculator. Estimate system size, number of panels, installation cost, payback period, and 25-year savings with monthly production chart.
Drywall Calculator
Estimate drywall sheets, square footage, mud, tape, screws, waste, weight, and installation cost for walls or ceilings with this free calculator.
Pool Volume Calculator
Free pool volume calculator for rectangular, round, oval, kidney & L-shaped pools. Get gallons, liters, cubic feet with variable depth. Works for above-ground & in-ground.
Stone Calculator
Free stone calculator. Estimate crushed stone, river rock, or gravel in tons, cubic yards, and bags. 12 stone types, 3 shapes, waste factor, and cost estimator.
Flooring Calculator
Free flooring calculator. Calculate sq ft, boxes, installation cost, and materials for 12 flooring types — laminate, vinyl plank, hardwood, tile, and more.
Air Conditioner Size Calculator
Use this free air conditioner size calculator to estimate BTU and tonnage for a room or home from area, climate, insulation, sun, occupants, and windows.
Pipe Weight Calculator
Free pipe weight calculator for round, square, and rectangular pipes. 17 materials, NPS schedule lookup, weight per meter and foot, water weight, and cost estimate.
MS Plate Weight Calculator
Calculate MS plate weight in kg from length, width, thickness, quantity, and density. Includes kg/m2 chart, chequered plate allowance, formula, and cost.
Pond Calculator
Free pond calculator for rectangular, round, oval, kidney & irregular ponds. Get volume in gallons & liters, liner size needed, fish stocking capacity, and fill time.
Spray Foam Insulation Cost Calculator
Free spray foam insulation cost calculator. Estimate board feet, thickness, and total cost for open-cell and closed-cell spray foam projects.
Drop Ceiling Calculator
Calculate drop ceiling tiles, grid layout, main tees, cross tees, wall molding, hanging wires, materials, and optional labor for any room.
Plasterboard Calculator
Free plasterboard calculator. Enter room dimensions to get boards needed, joint compound, tape, screws, weight, and cost. Supports UK sizes with waste factor.
Square Feet to Linear Feet Calculator
Free square feet to linear feet calculator. Convert SF to LF and LF to SF instantly with material width presets, waste factor, and live results.
Sod Calculator
Free sod calculator: estimate lawn area, pallets, rolls, slabs, and cost. Supports 4 shapes, adjustable waste factor, 6 sod types, and weight estimation.
Sand and Cement Calculator
Free sand and cement calculator for patio, brickwork, screed, render, and concrete. Estimate sand, cement, and aggregate in kg, tonnes, and bags with adjustable mix ratios, waste factor, and cost estimate.
Deck Stain Calculator
Use this free deck stain calculator to estimate gallons, cans, coverage, waste, railings, stairs, and material cost for staining a deck.
USAJoist Span Calculator
Calculate U.S. floor and deck joist spans by species, grade, size, spacing, and load. NDS 2018 checks and a 4×4 span table included.
Duct Size Calculator
Calculate HVAC duct size from CFM for supply, return, flex, and exhaust ducts. Get round, rectangular, velocity checks, and a CFM chart.
Recessed Lighting Calculator
Free recessed lighting calculator. Enter room dimensions to get exact fixture count, spacing, rows × columns layout, visual preview, and installed cost. Supports 6 room types with common foot-candle planning targets.
Can Light Calculator
Plan can light spacing, placement, rows, columns, wall offset, fixture count, and estimated installation cost for any room.
Electrical Load Calculator
Free residential electrical load calculator. Enter sq ft, appliances, HVAC & EV charging to get load in VA, amps and panel size. Uses NEC 220 Optional Method.
Cost Per Square Foot Calculator
Free cost per square foot calculator for construction and remodels. Estimate total cost with labor, materials, waste factor, and US benchmark comparison.
Epoxy Resin Calculator
Free epoxy resin calculator: estimate epoxy in mL, gallons, and ounces. Includes coverage area, mix ratio, waste factor, seal coat, and cost for table tops, river tables, and art projects.
Rolling Offset Calculator
Calculate pipe rolling offset travel, run, and cut length instantly. Supports 22.5°, 45°, 60° fittings plus conduit bending mode with shrinkage. Free, no ads.
Generator Size Calculator
Calculate what size generator you need for home backup, RV, or job-site power. Add appliances, surge watts, fuel type, altitude, and runtime.
Tonnage Calculator
Free tonnage calculator for gravel, asphalt, sand, stone, dirt, and more. Estimate material weight in tons and cubic yards with 30+ materials, 4 area shapes, waste factor, and compaction adjustment.
Rectangular Tube Weight Calculator
Free rectangular tube weight calculator. Calculate RHS weight in kg/m, lb/ft, and total weight for MS, steel, aluminum, stainless steel & more. Instant results with formula. No sign-up.
Chequered Plate Weight Calculator
Calculate chequered plate weight for MS, SS, and aluminium. Get kg, lb, kg/m², pattern allowance, quantity totals, and cost estimate.
Wall Stud Calculator
Free wall stud calculator. Estimate stud count with spacing, corners, and openings. Includes plates, board feet, and cost. Imperial and metric supported.
Flange Weight Calculator
Free flange weight calculator for MS, SS, WNRF, SORF, and blind flanges. Get kg/lb weight from dimensions, density, bolt holes, and ANSI B16.5 presets.
USAHeat Pump Cost Calculator
Estimate heat pump running costs and compare gas, oil, propane, and electric heating. See annual savings, payback, and carbon reduction.
Siding Calculator
Free siding calculator estimates how much siding you need in squares and square feet. Calculate vinyl, Hardie, wood, or metal siding costs with waste factor and accessories.
Bolt Weight Calculator
Free bolt, nut & washer weight calculator. Calculate hex, stud & anchor bolt weight in kg or lbs with 10 materials, thread reduction, and assembly support.
Wainscoting Calculator
Free wainscoting calculator for panel layout, spacing, and cost. Plan picture frame, board and batten & shadow box styles with instant results.
Board and Batten Calculator
Free board and batten calculator for wall layouts. Enter wall size and batten width to get exact spacing, panel count, materials, and cost.
Ramp Calculator
Free ramp calculator. Calculate ramp slope, length, angle, and ADA compliance. Enter rise to get instant results in feet, inches, or metric. Includes cost estimator and material calculator.
Rip Rap Calculator
Free rip rap calculator to estimate rock size (D50), tonnage, volume, and cost. Easily calculate shoreline slope coverage and stable stone sizes with Isbash sizing.
Sub Base Calculator
Calculate sub base tonnage, bulk bags, and cost for MOT Type 1, 2, 3, and crusher run. Supports patios, driveways, and paths in metric or imperial units.
Paving Calculator
Free paving calculator to estimate pavers, joint sand, bedding sand, sub-base stone and project cost. Supports 5 paver patterns, metric and imperial units, dry-lay and wet-lay installation with multi-currency cost estimation.
Grout Calculator
Calculate how much grout you need for tile. Enter tile size, joint width, depth, and area to estimate grout weight, bags, waste, and cost.
Conduit Size Calculator
Calculate electrical conduit size using NEC fill rules. Choose EMT, PVC, RMC, wire size, insulation, and conductor count to see fill %, minimum conduit size, and jam risk.
Copper Weight Calculator
Calculate copper weight in kg and lbs for wire, pipe, rod, sheet, and busbar. 5 copper/alloy presets, custom density, metric/imperial, and cost estimation.
Square Bar Weight Calculator
Calculate square bar weight in kg and lbs for mild steel, stainless steel, aluminum, brass, copper, and EN8. 6 material presets plus custom density, metric/imperial units, and cost estimation. Free online tool.
Round Bar Weight Calculator
Calculate round bar weight in kg and lbs for mild steel, stainless steel, aluminum, brass, copper, and EN8. 6 material presets plus custom density, metric/imperial units, and cost estimation. Free online tool.
Angle Weight Calculator
Calculate steel, MS, stainless steel, aluminum and angle iron weight in kg/lb. Supports equal and unequal angles, kg/m, lb/ft, formulas and cost.
I Beam Weight Calculator
Calculate I-beam weight in kg, kg/m and lb/ft for custom dimensions or ISMB, IPE, HEA, HEB and IPN sizes. Includes MS, aluminum and cost.
Decking Calculator
Free decking calculator to estimate deck boards, fasteners, waste, linear feet, and material cost for wood, composite, or PVC decking in ft/in or metric units.
UKLoft Conversion Cost Calculator
Calculate your loft conversion cost instantly. Get 2026 UK estimates for Velux, Dormer, Mansard & Hip-to-Gable conversions. Includes region, property type & optional extras. Free, no email required.
USABarndominium Cost Calculator
Barndominium cost calculator for 2026: estimate total cost by state, size, finish, foundation, and kit, shell, or turnkey build type.
Soffit Calculator
Free soffit calculator estimates panels, fascia boards, and vent requirements in seconds. Supports vinyl, aluminum, wood, and fiber cement with cost breakdown.
UPVC Windows Price Calculator
Free UPVC windows price calculator. Set your own base rate, labor rate, and tax to estimate costs for any market. Choose currency, window style, size, glazing, and color. No email or sign-up required.
Retaining Wall Calculator
Free retaining wall calculator estimates blocks, base gravel, backfill, drainage pipe & total cost. Supports straight, curved, and fire pit walls with imperial and metric units.
LVL Beam Span Calculator
Free LVL beam span calculator. Estimate allowable span for laminated veneer lumber beams using simplified NDS formulas. Enter span, load, and application to get LVL beam size estimates with bending, shear, and deflection checks. Supports Microllam, Versa-Lam, and LP SolidStart reference values.
USAHouse Repiping Cost Calculator
Estimate your whole-house repiping cost by material, size, and layout. Compare PEX, copper, and CPVC with permits and restoration included.
Why Use Construction Calculators?
Ordering too much material wastes money; ordering too little delays your project. These calculators estimate exact quantities for concrete, asphalt, gravel, and fencing based on your project dimensions. You also get square footage calculations for rooms, walls, and multi-room layouts — essential for flooring, painting, and renovation planning.