Construction Calculators
Estimate materials, quantities, and code requirements in seconds. Precise calculators for concrete, paint, flooring, framing, roofing, and more — then turn your numbers into a real floor plan.
Square Footage Calculator
Add up rooms to get total area in sq ft, sq m, yards and acres — with a waste factor for materials.
Concrete Calculator
Cubic yards, 60/80 lb bags, and cost for slabs, footings, columns, and sonotubes.
Paint Calculator
Gallons and cost to paint walls and ceilings, accounting for doors, windows, and coats.
Flooring & Tile Calculator
Boxes, tiles, and total cost for any floor area, including waste and pattern overage.
Roof Pitch Calculator
Convert pitch to angle, find rafter length, and estimate total roof area and squares.
Stair Calculator
Calculate rise, run, and stringer length with an automatic IRC code-compliance check.
Drywall Calculator
Sheets, joint compound, screws, and tape needed to hang and finish any room.
Lumber Calculator
Board feet, wall studs, and framing cost from your dimensions and spacing.
Beam & Joist Span Calculator
Quick span sizing for floor joists and headers based on common IRC span tables.
BTU Calculator
Estimate the heating and cooling load for a room to size HVAC, mini-splits, and heaters.
Egress Window Calculator
Check whether a bedroom window meets IRC net-clear-opening and sill-height rules.
ADA Clearance Checker
Verify accessible door widths, turning space, and clear floor area against ADA guidance.
Deck Material Calculator
Estimate decking boards, joists, and screws for a deck from its length, width, and board size.
Fence Calculator
Calculate posts, rails, pickets, and concrete bags for a wood fence of any length and height.
Gravel & Aggregate Calculator
Find cubic yards, tons, and cost of gravel or aggregate for any area and depth.
Mulch & Topsoil Calculator
Estimate cubic yards and bags of mulch or topsoil needed to cover a bed at any depth.
Insulation Calculator
Get the recommended R-value for your climate zone and estimate batts or bags for any area.
Wallpaper Calculator
Calculate how many rolls of wallpaper you need for a room, accounting for pattern repeat.
Baseboard & Trim Calculator
Find linear feet and number of pieces of baseboard and crown molding for any room.
Concrete Block (CMU) Calculator
Estimate concrete blocks, mortar bags, and courses needed to build a CMU wall.
Material Estimating Made Simple
Accurate quantity takeoffs save money and prevent project delays. Whether you're pouring a slab, hanging drywall, framing a wall, or tiling a floor, these calculators give you material counts and costs in seconds — using the same formulas and waste factors the trades rely on.
Every calculator works in both imperial and metric, runs instantly in your browser, and never requires a sign-up. When you're ready to go from measurements to a real drawing, our AI floor plan generator and Plan Chat turn your numbers into a to-scale plan you can export to DXF.