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Tested formulas. Clear quantities.
Free Construction Calculators — Concrete, Roofing, Flooring & More
Estimate concrete, roofing, flooring and more. Enter your measurements to see material quantities, waste and purchase rounding. Free to use; no account needed.
137 tested calculators across 13 trades. Free. Account optional. You enter the rate.
Formulas explained Waste, rounding and bags visible Quote-ready line items
Live calculation
Concrete slab
Ready-mix orderPurchase rounded
3.25 yd³
Start with a real job
Focused calculators for the work that moves your estimate forward.
Concrete
Slabs, curb-and-gutter, volumes, rebar, wire mesh, post holes, sonotubes, mix parts, ready-mix, stairs, weight and rounded purchase quantities.
17 tested toolsMasonry
CMU, brick, mortar bags, grout fill, retaining-block and stone-veneer counts with opening deductions.
7 tested toolsRoofing
Pitch-aware material quantities, hip roofs, snow-load planning, bundles, ridge cap, ice-and-water, sheathing, drip edge, starter and ridge vent.
16 tested toolsFlooring
Area takeoffs, grout, thinset, epoxy, self-level, backer board, subfloor, package coverage, waste, and cost modes.
13 tested toolsPainting
Interior, primer, exterior, trim, coverage, coats, openings, wallpaper rolls, and whole-gallon purchases.
8 tested toolsPainting & drywall
Sheets, compound, fasteners, tape, and opening deductions.
5 tested toolsExterior
Siding, vinyl siding, house wrap, foam board, board-and-batten, soffit, fascia, insulation, stucco, gutters and downspouts.
13 tested toolsFencing
Wood pickets, privacy boards, vinyl, aluminum, chain-link, stain, gates, post caps and post-hole concrete.
8 tested toolsLandscaping
Mulch, soil, fill dirt, gravel, cut-and-fill, dump-truck loads, road base, sand, sod, pavers, grass seed, river rock, french drain, pool volume, fabric, sealer and asphalt.
20 tested toolsLumber & framing
Board feet, stairs, decking, stain, shiplap, wainscoting, trim, ramps, balusters, studs, joists, rafters, and sheet goods.
15 tested toolsHVAC
Planning furnace BTU and room CFM from area, height and a stated factor. Not Manual J or Manual D.
starter set · 3 toolsGeneral estimating
Waste, markup, tax, contingency and caulk as visible components.
5 tested toolsUtilities
Area, volume, acreage, grade, trench excavation, 3-4-5 check-square, pipe volume, and length conversions for field baselines.
7 tested tools137 tested calculators across 13 trades. Thin trades are labeled as a starter set — not a complete catalog.
Explore the full libraryPrefer a workflow over a single tool? Trade guides cover measurement, rounding and ordering considerations before you open a calculator.
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Free to use. Account is optional and free. Costs use the rate you enter. Construclytic does not fetch live supplier prices.
Feroz SheikhWritten by Feroz Sheikh · founder
Built in Doha, Qatar by Feroz Sheikh. Originally from Nepal.
The trust model
No hidden math. No unlabeled prices.
Every calculation shows the formula version, unit system, rounding rule, waste allowance, and purchase assumptions before it becomes a project line item.
Formulas explained
Each tool includes its calculation method and tested examples.
Waste, rounding and bags visible
Purchase increments stay on the sheet. You can add your own supplier prices.
Quote-ready line items
Capture formula, inputs, prices, and assumptions with an estimate.