ganak.appConstruction Calculators
63 calculators · Updated May 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
Estimate concrete volume in yards, feet, or meters for slabs, footings, walls, and columns. Includes bag count and cost estimates.
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
Estimate fence materials, posts, pickets, and total cost. Compare wood, vinyl, chain link, and metal fencing with instant DIY or professional cost breakdown.
All Construction Calculators
Asphalt Calculator
Estimate asphalt tonnage, volume, and cost for driveways, roads, and parking lots. Supports hot mix, warm mix, cold mix, and porous asphalt.
Gravel Calculator
Estimate gravel tonnage, volume in yards, and cost for driveways, landscaping, and drainage. Supports pea gravel, crushed stone, river rock, and more.
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
Calculate how much insulation you need. Supports 10 insulation types (fiberglass, cellulose, spray foam, rigid board), 8 project areas with R-value presets, framing deductions, and cost estimation.
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
Free brick calculator. Enter wall dimensions to get brick count, mortar, sand, weight, and cost. Supports 8 brick sizes with waste factor and openings.
Concrete Block Calculator
Free concrete block calculator. Estimate block count, mortar, grout fill, wall area, and material cost for CMU walls with openings, waste, and imperial or metric units.
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
Free drywall calculator. Enter room dimensions to get sheets needed, joint compound, tape, screws, weight, and cost. Supports 4 sheet sizes with waste factor.
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 square footage, boxes needed, and cost for 12 flooring types including laminate, vinyl plank, hardwood, and tile.
Air Conditioner Size Calculator
Free AC size calculator. Enter room dimensions, insulation, climate zone, and occupants to get BTU, tonnage, energy cost, and AC type recommendation.
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
Free drop ceiling calculator. Enter room dimensions for tile count, grid components, hanging wires, border sizes, and cost estimate with waste factor.
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
Free deck stain calculator: estimate gallons needed for any deck. Choose stain type, add railings & stairs, with waste factor and cost estimate.
Joist Span Calculator
Estimate allowable wood joist spans for floors and decks using NDS 2018 formulas. Enter species, grade, size, and spacing — includes bending, shear, and deflection checks.
Duct Size Calculator
Free duct size calculator. Enter CFM to get round duct diameter and equivalent rectangular dimensions. Supports velocity-based and friction-based sizing with duct type selection and velocity range checking.
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
Free can light calculator. Plan recessed lighting layout, spacing, and fixture count for any room. Get exact rows × columns grid, visual preview, and installed cost estimate with energy calculations.
Electrical Load Calculator
Free electrical load calculator for residential homes. Enter square footage and appliances to get total load in VA, amps, and recommended panel size. Based on NEC 2023 Article 220.82 Optional Method with step-by-step formula breakdown.
Cost Per Square Foot Calculator
Free cost per square foot calculator for construction, renovation, and remodeling projects. Estimate total cost with labor, materials breakdown, and waste factor. Compare against US benchmarks (FX-converted) by project type.
Epoxy Resin Calculator
Free epoxy resin calculator. Calculate how much epoxy you need in oz, gallons, or mL for table tops, river tables, and art projects. Includes mix ratio, hardener, waste factor, and cost estimate.
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
Free generator size calculator to find the right kW for your home, job site, or RV. Includes appliance load, starting surge, fuel type derating, and cost estimate. No sign-up required.
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
Free chequered plate weight calculator for MS, stainless steel, and aluminium. Enter dimensions to get weight in kg and lbs with pattern-specific factors for diamond, lentil, and round bean. Includes weight per m², per sheet, batch total, 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.
inFlange Weight Calculator
Free flange weight calculator for WNRF, SORF, Blind, Threaded, and Lap Joint flanges. Calculate MS, SS, and alloy flange weight in kg with ANSI B16.5 presets. Includes bolt hole deduction, hub volume, and cost estimation. Works in metric and imperial units.
Heat Pump Cost Calculator
Free heat pump cost calculator. Compare heat pump vs gas, oil, propane & electric heating costs. See annual savings, payback period & carbon reduction. Includes installation ROI.
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 weight calculator for hex, stud, anchor & eye bolts. Calculate weight in kg or lbs with 9 materials, thread reduction, and cost estimation.
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. Estimate batten spacing, panel count, and material needed for any wall. Includes cost estimation, visual layout preview, and imperial/metric units.
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 grout coverage, bags, and cost for any tile project. Supports sanded, unsanded, and epoxy grout with dual units (metric/imperial) and tile pattern-based waste recommendations.
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.