Home & Building tools
Material and project calculators: paint, concrete, tile, decking, roofing, and more.
Work out gallons of paint for a room from wall dimensions, doors, windows, and coats — with a buy-this-many answer.
Convert slab, footing, column, or tube dimensions into cubic yards of concrete and 40/60/80-lb bag counts.
Turn an area and depth into cubic yards of gravel and tons at an editable density, with a waste factor.
Convert bed area and depth into cubic yards of mulch and the number of 2-cu-ft bags to buy.
Estimate cubic yards and tons of topsoil from area and depth, using an editable 1.1 t/yd³ density.
Add up lawn sections into total square feet and convert to sod pallets and rolls with a waste factor.
Count pavers for a patio from the paver size, with waste, plus gravel base and bedding sand volumes.
Count tiles and boxes for an area from tile size and grout gap, with layout-aware waste defaults.
Convert wall and ceiling area into 4×8/4×10/4×12 sheet counts plus mud, tape, and screw estimates.
Turn a fence length into posts, rails, pickets or panels, and bags of concrete from the post spacing.
Estimate decking boards (lineal feet and count), joists at your chosen spacing, and screws for a deck.
Convert between rise/run, degrees, and x/12 roof pitch, and compute rafter length with overhang.
Convert a roof footprint and pitch into sloped area, roofing squares, and shingle bundles with waste.
Convert driveway area and compacted thickness into asphalt tons at 145 lb/ft³ and a cost at your $/ton.
Count retaining wall blocks per course and total, plus cap blocks and gravel backfill volume.
Find the insulation thickness needed for a target R-value by material, and count batt packages for an area.
Estimate cooling BTU from room size, insulation, sun, occupants, and kitchen, plus heating BTU by climate zone.
Convert between BTU/hr and AC tons at 12,000 BTU per ton, or estimate tonnage from floor area.
Work out wallpaper rolls from wall size, roll dimensions, and pattern repeat, including usable strips per roll.
Compute board feet for one or many boards (thickness × width × length ÷ 12) and price the lot at $/BF.
Turn a total rise into riser count and height, tread run, total run, and stringer length, with code flags.
Count studs for a wall at 16 or 24 in on center, with extras for corners and openings, plus plate lumber.
Compute the water volume and weight in a pipe from inner diameter and length, with Schedule 40 presets.
Compute ramp length from a rise at 1:12 ADA slope, or turn rise and run into ratio, angle, and grade.
Match roof area and rainfall intensity to a gutter size from an editable capacity table, plus downspouts.
Size a pond liner sheet from pond length, width, depth, and edge overlap using the standard formula.
Compute drain gravel in cubic yards and tons for a trench, subtracting the perforated pipe's volume.
Build a labor/materials estimate line by line with overhead and profit margins, and export clean plain text.