Construction · Index
All calculators
Every calculator on the site, grouped by trade. Imperial or metric on every page.
01 Concrete
- Concrete volume calculatorslabs · columns · footings
- Concrete bag calculator40 · 60 · 80 lb compared
- Sonotube volume calculatorround footings · frost depth · bags
- Concrete weight calculatorpounds · tons · dead load · hauling
- Rebar spacing calculatorbar count · ties · chairs · weight
- Concrete countertop calculatorGFRC vs solid cast · bags · finished weight
- Fence post calculatorconcrete per hole · depth by frost · bags
- Cubic yards to bags calculatorbags per yard by size · standard & fast-set
- Concrete bag yieldsyield in ft³ & m³ by bag size · per-pound constant
- Ready-mix vs bagged concretebreak-even volume from your prices · short-load fee · labor ceiling
- Concrete slab thickness4 in default · 5–6 in reinforced for heavy vehicles · cost of an extra inch
- Concrete curing timestrength at 1 · 3 · 7 · 14 · 28 days · ACI 209R-92 model · psi or MPa
- Concrete cylinder volume calculatorpiers & columns · belled base frustum · bags & ready-mix
- Shed foundation calculatorskid count vs pier count · gravel pad · 200 ft² permit & 600 ft² frost thresholds
- Concrete footing calculatorcontinuous strip footing · width from IRC Table R403.1 by soil & stories · bags
- Concrete steps calculatorstepped-pour volume from rise/run/width · staircase prism · solid vs sloped-fill core · bags
- Concrete mix ratio calculatorsite mix by volume ratio (1:2:3, 1:2:4) · cement bags, sand, gravel, water · w/c strength ceiling (ACI 211.1)
- Concrete sealer calculatorgallons by chemistry & finish · penetrating vs acrylic · broom/smooth/stamped coverage
02 Lumber & framing
- Deck materials calculatorjoists · decking · posts · railing
- Board foot calculatorboard feet · nominal vs actual · $/bf vs $/lin ft
- Stair calculatorrisers · treads · stringer · IRC check
- Wall framing calculatorstuds · plates · headers · cripples
- Lumber dimensions chartnominal vs actual · inches & mm · PS 20
- Floor joist span table4 species side by side · #2 · 16 in oc · IRC R502.3.1(2)
- Screws vs nails for framingcode-allowable applications · IRC R602.3(1) · nail take-off
- What is a board foot?definition · formula · nominal vs actual · hardwood surface measure
- Stud count calculator12 · 16 · 24 in oc side by side · closing stud · corner & partition backing
- Trim calculatorbaseboard less doorways · crown full perimeter · casing per face · sticks
- OSB sheathing calculatorwall & roof 4×8 sheet count · gross area (openings not deducted) · H-clips
- Subfloor calculator4×8 sheet count + panel thickness by joist spacing (19/32 at 16 oc) · gross platform area
- Door rough opening calculatorframed opening from slab + jamb & shim allowance · header length (opening + 2 jacks)
- Window rough opening calculatorframed opening from window unit size + per-side shim gap (1/4 in vinyl · 3/8 in composite/mulled) · header length
- Deck cost calculatormaterials bill (joists · boards · posts · footings) × your local prices · materials-only, no $/ft² average
- Nail & screw size chartpenny (d) sizes to inches & mm · wood-screw gauge to diameter · common framing use · ASTM F1667 / ASME B18.6.1
- Header size calculatorsmallest built-up header that clears an opening, by building-width tributary load (roof + ceiling) · jack-stud count · footnote-f unbraced 0.70 reduction · IRC Table R602.7(1)
- Deck beam span calculatorbuilt-up deck beam span by species (Southern Pine vs DF/HF/SPF) and joist span · smallest 2-ply beam that clears your post spacing · AWC DCA 6 Table 3A / IRC Table R507.5
03 Drywall
- Drywall calculator4×8 · 4×10 · 4×12 + mud
- Drywall mud calculatorready-mix vs setting-type · buckets · bags
- Insulation R-value calculatorsettled depth by material · bags · batt compression
- Vapor barrier calculatorpoly roll count · overlap as linear seams · IRC climate-zone check
04 Paint
- Paint calculatorsurface-adjusted coverage
- Wallpaper calculatorrolls by the drop · pattern repeat · batch note
- Deck stain calculatorsemi-transparent vs solid · second-coat coverage · weathered wood
- How much paint do I need?gallons · the can-vs-wall coverage gap · gallons plus quarts
- Paint sheen guideMPI gloss units by sheen · sheen per surface · the drywall finish level it forces
05 Tile
- Tile calculatorwaste by pattern · grout joint
- Grout calculatorvolume by tile size · joint · thickness
- Thinset calculatorbag count by trowel notch size
- Underlayment calculatorcement board · DITRA · plywood by application
- Ceiling tile calculatordrop-ceiling tiles + grid take-off · mains · 4 ft & 2 ft cross tees · wall molding · hanger wire · 2×2 vs 2×4
- Backsplash tile calculatorrun × 18 in band · outlet & switch cutout allowance · small-format waste · subway vs mosaic sheets
- Shower pan calculatordry-pack mortar bed volume by pan size & 1/4-in-per-ft slope to drain · pre-slope bed under the liner counted · center vs corner drain · bag count
- Peel and stick vs mortar backsplashmaterial cost from your prices · the ~3–4 day thin-set + grout cure (VersaBond 24 hr, Polyblend Plus 72 hr) peel-and-stick skips · 120°F adhesive heat limit & 8 in stove clearance
06 Flooring
- Flooring calculatorplank waste by board length
- Carpet calculatorroll width · seams · square yards
- Vinyl plank calculatorcartons · transitions · expansion gap
- Epoxy flooring calculatorcoverage by solids % and dry-film mils
- Self-leveling concrete calculatorbags by area and average fill depth · coverage scaled inversely with depth · 1.5 in single-pour limit
- Hardwood flooring nail calculatorcleats/staples by NWFA spacing · per-ft² count by board width · end-anchor premium on short boards
- Vinyl vs laminate flooringmaterial cost from your prices · mil (ASTM F410) vs AC class (EN 13329) don't convert · HDF vs SPC core and water
- Engineered vs solid hardwood flooringmaterial cost from your prices · NWFA grade & subfloor gate rules solid out below grade · wear-layer refinishing threshold (2.5/3.2 mm)
- Irregular room square footageL-shape decomposition · bay-window trapezoid vs rectangle over-count · two-rectangle closure check
07 Roofing
- Roof shingles calculatorpitch factor · bundles · ridge cap
- Rafter length calculatorrise/run · ridge deduction · overhang
- Roof pitch calculatorrise/run · degrees · pitch factor
- Measure roof pitchlevel drop · phone angle · rise-in-12
- Siding square footage calculatorgable area from pitch · squares · waste
- Soffit and fascia calculatoreave vs rake linear feet · pitch factor · panels
- Gutter calculatorlinear feet · downspout count by roof area & rainfall rate
- Metal roofing calculatorpanel count by net coverage width · PBR/5V/standing seam · end-lap
08 Masonry
- Brick calculatormodular · queen · utility compared
- Concrete block wall calculator8×8×16 · half-blocks · mortar bags
- Retaining wall block calculatorblocks · caps · drainage gravel · base
- Stucco coverage calculatorscratch · brown · finish coats · bags
09 Earthworks
- Gravel calculatorvolume · weight · tonnage
- Asphalt calculatortonnage · compacted depth · min lift
- Patio paver calculatorpavers · sand · base · edging
- Fence panel calculatorpre-built panel count · post count · on-center spacing incl. post width
- Landscape edging calculatorlinear feet incl. curve arc · coil count · stake count by curve radius
- Mulch calculatorcubic yards by bed area and depth · 2 ft³ bag count · bag-vs-bulk break-even (13.5 bags/yd³)
- Sod calculatorpallet count from lawn area · 16×24 slab / 2×5 roll pieces · pallet coverage is an input (nominal, not 450 ft²)
- Topsoil calculatorcubic yards by area and finished depth · settling/compaction allowance to grade · 0.75 ft³ bag count · bag-vs-bulk break-even (36 bags/yd³)
- Paver jointing sand calculatorpolymeric sand 50 lb bags by joint width · rated coverage scaled for paver height · bedding sand kept separate
- Excavation calculatorbank vs loose cubic yards by soil swell factor (12% sand/gravel · 25% earth · 30% clay · 50% rock) · truckload count off loose volume · compacted-fill shrinkage
- French drain calculatortrench gravel volume & tonnage (pipe displacement subtracted) · perforated pipe length · geotextile burrito-wrap fabric width per lin ft (W + 2D + overlap) · 1% slope check vs fall available (IPC 704.1)
- Flagstone calculatortons by area and thickness · coverage per ton by stone density (168/150/160 lb/ft³) · as-quarried random-thickness trap · 15–20% breakage & joint allowance