Construction & Measurement
Construction & Measurement Calculators
Estimate materials, dimensions, quantities, waste, and project costs.
66 tools
Related growth hubs
Start with the hub when you want a decision path, not just one calculator.
AC BTU Calculator
AC BTU calculator: size your air conditioner by room dimensions, ceiling height, sun exposure, and occupancy so you buy the right capacity. Free, runs locally.
Backsplash Calculator
Backsplash calculator: measure your kitchen wall area, add waste, and get tile count, boxes, and cost estimate. Free, no signup, runs in your browser.
Baluster Spacing Calculator
Baluster spacing calculator: compute on-center spacing and exact gaps so balusters pass the 4-inch sphere code test. Editable widths, free, in your browser.
Baseboard Calculator
Baseboard calculator: work out linear feet of baseboard trim plus a waste allowance for any room layout. Free, runs locally in your browser, no signup.
Beam Load Calculator
Beam load calculator: compute bending moment, shear force, and reactions for beams under point and distributed loads. Free, runs in your browser, no signup.
Brick Calculator
Brick calculator: estimate bricks, blocks, and mortar bags for any wall from its dimensions, plus waste allowance so you order right. Free, runs locally.
Ceiling Fan Size Calculator
Ceiling fan size calculator: match blade span to room square footage and ceiling height for correct airflow. Free, runs locally in your browser, no signup.
Ceiling Tile Calculator
Ceiling tile calculator: compute tiles, grid rails, border cuts, and boxes needed for any room size. Editable tile sizes, free, no signup, in your browser.
Chair Rail Calculator
Chair rail calculator: compute chair rail height and the total molding length plus piece count for any room size. Free, private, runs in your browser.
Countertop Calculator
Countertop calculator: estimate square footage, slab counts and total material cost for kitchen and bath projects. Editable prices, free, runs in your browser.
Crown Molding Calculator
Crown molding calculator: work out linear feet, pieces, and compound miter and bevel angles for any room size. Free, runs locally in your browser, no signup.
Curtain Length Calculator
Curtain length calculator: compute fabric length and drop from rod height, heading style, and hem allowance for any window size. Free, private, no signup.
Deck Board Calculator
Deck board calculator: how many decking boards your deck needs from deck area, board coverage, and a waste allowance. Free, runs locally, no signup needed.
Deck Stain Calculator
Deck stain calculator: work out stain gallons needed from deck size, boards, coats and coverage per gallon. Free, no signup, runs entirely in your browser.
Fabric Yardage Calculator
Fabric yardage calculator: turn project dimensions into yards of fabric including pattern repeat and waste. Free, runs locally, editable inputs, no signup.
Fence Post Calculator
Fence post calculator: posts, rails, and post-hole concrete needed from total fence length and post spacing. Free, editable spacing, runs in your browser.
Garage Size Calculator
Garage size calculator works out minimum width, depth and door sizes for your cars, storage and workshop space. Free, runs locally in your browser, no signup.
Generator Size Calculator
Generator size calculator: total your appliance and HVAC wattage, add starting surge, and pick the right generator size. Free, runs locally in your browser.
Grade Percentage Calculator
grade percentage calculator that converts points to percentages, weights assignments, and computes the final grade you need on exams. Free, no signup.
Grout Calculator
Grout calculator: compute exactly how many bags or pounds of grout you need from tile size, joint spacing, and total area. Editable rates, free, in your browser.
Gutter Size Calculator
Gutter size calculator: size gutters and downspouts from roof area and local rainfall intensity, with recommendations. Editable rates, free, no signup.
Insulation R Value Calculator
Insulation R value calculator: compute total wall or attic R-value across layers and compare material thickness and cost. Editable R-values, free, browser.
Insulation R-Value Calculator
Insulation R-value calculator: total R-value for layered walls, attic, or floor assemblies from thickness and material. Free, runs locally, no signup.
Lawn Seed Calculator
Lawn seed calculator tells you exactly how much grass seed your lawn needs from its dimensions and seed type coverage rates. Editable rates, free, no signup.
Lumber Calculator
Lumber calculator: estimate board feet, logs, and cost for framing, decking, and woodworking projects. Free, editable prices, runs in your browser, no signup.
Mulch Calculator
Mulch calculator: compute cubic yards and bags of mulch needed from your bed size and depth, with a cost estimate. Free, private, runs in your browser.
Patio Paver Calculator
Patio paver calculator: enter your patio dimensions and paver size to get the exact number of pavers needed including a waste allowance. Free, no signup.
Pipe Sizing Calculator
Pipe sizing calculator: find pipe diameter from flow rate and velocity limits, or check velocity and pressure drop. Free, editable values, runs locally.
Pipe Volume Calculator
Pipe volume calculator: compute the volume of liquid a pipe holds from inner diameter and length, in liters, gallons, or cubic feet. Free, runs in your browser.
Pond Volume Calculator
Pond volume calculator: work out gallons or litres for rectangular, circular and irregular pond shapes in seconds. Editable units, free, runs in your browser.
Pool Volume Calculator
Pool volume calculator: compute gallons or liters for rectangle, round, oval, and kidney pools from your measured dimensions. Free, runs in your browser.
Rain Barrel Calculator
Rain barrel calculator: estimate rainwater collected from your roof area and annual rainfall, by barrel volume and efficiency. Free, editable rates, no signup.
Raised Bed Soil Calculator
Raised bed soil calculator: convert your bed dimensions into cubic feet or yards of soil and mix ratios. Free, runs locally in your browser, no signup.
Roof Pitch Calculator
Roof pitch calculator: convert pitch to angle in degrees and rise per foot, and get rafter length from span and pitch. Free, runs in your browser, no signup.
Rug Size Calculator
Rug size calculator: find the right rug dimensions for your living room, sofa and dining table layouts instantly. Free, private, runs in your browser.
Shiplap Calculator
Shiplap calculator: figure board count, square footage, gaps, and waste allowance for your wall width and board spacing. Free, runs locally, no signup.
Siding Calculator
Siding calculator: measure wall square footage, subtract windows and doors, add waste factor, and estimate siding squares and boxes needed. Free, no signup.
Slope Calculator
Slope calculator: find the slope, angle, and equation of a line from two points or rise over run. Free, private, runs locally in your browser, no signup.
Sprinkler Heads Calculator
Sprinkler heads calculator: use your lawn size, spacing and water pressure to work out how many heads you need. Free, private, runs in your browser, no signup.
Staircase Calculator
Staircase calculator: compute rise, run, stringer length, and step count from total height. Editable code requirements, free, runs locally in your browser.
Sump Pump Calculator
sump pump calculator that sizes pump capacity in GPM from pit size, water table, and runoff area to prevent basement flooding. Free, runs locally, no signup.
Tank Volume Calculator
Tank volume calculator: compute exact capacity in gallons or litres for cylinder, rectangle and capsule tank shapes. Free, runs in your browser, no signup.
Tile Count Calculator
Tile count calculator: work out exactly how many tiles you need for any floor or wall area, including cut and breakage waste allowance. Editable sizes, free.
Toilet Water Calculator
Toilet water calculator: estimate litres or gallons per flush and yearly water use and cost from your toilet's specifications. Editable rates, free, no signup.
Wainscoting Calculator
Wainscoting calculator: compute panel counts, even spacing, and board footage for walls of any room length. Free, runs locally in your browser, no signup.
Wallpaper Calculator
Wallpaper calculator: work out rolls needed from wall dimensions, pattern repeat, and doors or windows, with wastage margin built in. Free, runs locally.
Water Heater Sizing Calculator
Water heater sizing calculator: match first hour rating and tank size to your household peak hour demand, with editable rates. Free, private, no signup.
Water Pressure Calculator
Water pressure calculator: convert psi, bar, kPa, and head of water for pipes and pumps. Free, editable units, runs locally in your browser, no signup.
Window Size Calculator
Window size calculator: compute rough opening, glass area, and standard window sizes from your wall framing dimensions. Free, private, in your browser.
Asphalt Calculator
Asphalt calculator: estimate tons of asphalt or hot mix needed from your driveway or lot length, width, and depth for accurate paving orders. Free, no signup.
Board Foot Calculator
Board foot calculator: convert lumber dimensions into board feet and total cost, multiple boards at once. Editable prices, free, runs in your browser.
Concrete Calculator
Concrete calculator: work out slab volume, cubic yardage, and how many concrete bags you need from your slab dimensions. Free, no signup, runs locally.
Decking Calculator
Decking calculator: estimate deck boards and linear footage needed from deck dimensions, board width, gap spacing, and waste. Free, private, no signup.
Drywall Calculator
Drywall calculator: estimate sheets, joint compound, and screws needed for a room, with waste allowance and optional sheet cost. Free, private, no signup.
Fence Material Calculator
Fence calculator: estimate posts, rails, pickets, and concrete needed for your fence from length, height, and spacing. Free, editable rates, no signup.
Flooring Calculator
Flooring calculator: work out square footage, boxes needed, and a waste allowance for hardwood, laminate, tile, or vinyl so you order right. Free, no signup.
Gravel Calculator
Gravel calculator: estimate tons or cubic yards of gravel needed for driveways, paths and landscape beds, with cost. Editable depth, free, runs in your browser.
Mulch and Soil Calculator
Mulch and soil calculator: convert bed dimensions into cubic yards of mulch, soil, or compost for accurate landscape material orders. Free, no signup.
Paint Calculator
Paint calculator: find how much paint you need in gallons from your total wall area, number of coats, and can coverage. Free, no signup, runs locally.
Paint Coverage Calculator
Paint coverage calculator: estimate gallons of paint needed for walls and ceilings by room size and coats. Free, private, runs in your browser, no signup.
Paver Calculator
Paver calculator: estimate the number of pavers, square footage, and base material needed for your patio or walkway project. Free, runs in your browser.
Roofing Calculator
Roofing calculator: convert roof measurements into squares, bundles of shingles, and material estimates for your project. Free, runs in your browser, no signup.
Square Feet to Linear Feet Calculator
Square feet to linear feet calculator: convert area to linear feet using your material width for flooring and lumber orders. Free, editable, runs locally.
Square Footage Calculator
Square footage calculator: compute room or whole home square feet from length and width measurements, with multi-room totals. Free, private, runs locally.
Stair Calculator
Stair calculator: convert total rise into riser height, tread depth, stringer length, and step count that meet building code. Free, no signup, runs locally.
Tile Calculator
Tile calculator: work out tiles needed for any floor or wall project, with waste allowance and box counts. Editable waste rate, free, runs in your browser.