137 internally tested tools across 13 planning categories.

Construction calculators.

137 internally tested tools in one library — search by trade or open a category. Formula ID, waste and rounding stay on every page. Free. Account optional.

17 tools

Concrete calculators

Concrete quantities, curb-and-gutter, rebar grids, wire mesh, post holes, sonotubes, stairs, volumetric mix parts, ready-mix planning, bags, weight and material cost references.

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Steel weight calculator

Rebar mass per metre, per bar and for a stated bar count from nominal diameter and steel density.

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Concrete slab calculator

Volume, ready-mix order, and bag equivalent for a rectangle, circle, or L-shape.

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Concrete footing calculator

Continuous footing volume, ready-mix quantity, and whole-bag equivalent.

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Concrete wall calculator

Concrete wall volume with stated thickness, waste, and ready-mix rounding.

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Concrete column calculator

Round concrete-column volume, ready-mix order and bag-equivalent estimate.

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Concrete driveway calculator

Driveway volume, ready-mix order and bag-equivalent estimate with visible allowance.

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Concrete patio calculator

Patio slab volume, ready-mix order and bag-equivalent estimate with visible allowance.

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Concrete bag calculator

Slab volume translated into a whole-bag purchase quantity using the stated bag yield.

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Concrete cost calculator

Preliminary material cost from a stated ready-mix quantity and local supplier rate.

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Rebar calculator

Preliminary slab rebar count, linear footage and bar-weight planning from spacing, cover and bar size.

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Post hole calculator

Concrete volume and bag count for round fence or deck post holes, including solid sonotube piers when post diameter is zero.

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Concrete mix calculator

Volumetric cement, sand and aggregate split from a known wet volume using a stated mix ratio and dry-volume factor.

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Concrete stairs calculator

Triangular-step volume, ready-mix order and bag equivalent from riser, tread, width and count.

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Curb and gutter calculator

Combined curb-and-gutter volume, ready-mix order and bag equivalent from run length and the two cross-section rectangles.

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Wire mesh calculator

Welded-wire mesh sheet count from slab area and the face coverage of one sheet, with overlap sitting in the waste field.

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Concrete weight calculator

Concrete tons from a stated volume and an editable density. Ready-mix yards stay the slab tool.

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Sonotube calculator

Solid cardboard-tube volume, ready-mix order and bags. Post-hole annulus is a different tool when a post occupies the hole.

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7 tools

Masonry calculators

Concrete block, brick, mortar bags, CMU grout fill, retaining-block and stone-veneer quantities with nominal face sizes kept visible.

16 tools

Roofing calculators

Pitch, shingle, hip, panel, underlayment, ice-and-water, sheathing, drip edge, starter strip, ridge vent, flashing, ridge cap, waste, snow-load planning and cost planning.

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Waterproofing membrane calculator

Membrane roll quantities with explicit side and end laps, layers, upstand area and cutting allowance.

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Roofing calculator

Pitched roof area, squares, type-specific shingle bundles and underlayment rolls.

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Roof pitch calculator

Roof pitch multiplier and slope angle from rise per 12 units of run.

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Metal roof calculator

Pitched roof area and whole fixed-panel quantity using net area per selected panel.

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Roofing underlayment calculator

Pitched roof area and whole underlayment-roll quantity using stated roll coverage.

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Roof flashing calculator

Whole flashing-piece quantity from required linear coverage and a visible allowance.

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Roofing waste calculator

Add a stated roofing waste allowance to an independently measured roof area.

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Roofing cost calculator

Preliminary roofing material cost from stated area, allowance and user-entered local rate.

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Ridge cap calculator

Hip and ridge cap bundles from measured ridge and hip length plus the selected bundle's linear coverage.

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Ice and water shield calculator

Self-adhered ice-and-water roll count from eave length, coverage up the roof and valley length.

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Roof sheathing calculator

Plywood or OSB sheet count from roof footprint, pitch multiplier and sheet coverage.

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Drip edge calculator

Drip-edge piece count from eave run plus rake run, divided by the stock length you will buy.

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Starter strip calculator

Starter-shingle bundle count from total eave length and the linear coverage printed on the starter bundle.

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Ridge vent calculator

Ridge-vent piece count from ridge length and the coverage of one vent section. Not a ventilation design.

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Hip roof calculator

Hip-roof area, squares and hip run from footprint, pitch and overhang. Gable shingles stay the roofing calculator.

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Snow load calculator

Planning snow load in pounds from roof area and a stated ground snow load. Not a PE stamp.

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3 tools

HVAC calculators

Planning heating load and airflow from floor area, ceiling height, a stated BTU factor and air changes per hour. Not a load calc, duct design or equipment size.

13 tools

Flooring calculators

Floor coverage, packages, tile, grout, thinset, epoxy, self-level, cement board, subfloor, carpet, underlayment, waste, and cost tools.

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Flooring calculator

Floor area and purchase packages with a clear waste allowance.

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Tile calculator

Floor tile coverage and whole-package quantity with a visible cut allowance.

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Laminate flooring calculator

Laminate floor coverage and whole-carton quantity with stated waste.

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Vinyl flooring calculator

Vinyl flooring coverage and whole-package quantity with a visible allowance.

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Carpet calculator

Carpet area in square feet or metres, square-yard equivalent, and optional whole-roll or cut conversion.

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Flooring underlayment calculator

Underlayment coverage and whole-roll quantity with stated lap allowance.

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Flooring cost calculator

Preliminary flooring material cost from measured area, visible allowance and user-entered rate.

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Tile grout calculator

Grout volume and bag count from tile size, joint width, joint depth and floor area.

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Thinset calculator

Thinset or tile-mortar bag count from tiled area, selected trowel coverage and a visible mixing allowance.

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Epoxy floor calculator

Whole gallons of floor epoxy from garage or shop area, coats and the labelled coverage.

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Cement board calculator

Cement-board sheet count from wet-area floor or wall coverage and the face of one sheet.

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Subfloor calculator

Tongue-and-groove subfloor sheet count from floor area and the face of one panel.

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Self-leveling calculator

Self-leveling bags from floor area, pour depth and the bag yield printed on the sack.

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8 tools

Painting calculators

Paint coverage, primer, exterior elevations, trim enamel, coats, opening deductions, wallpaper rolls, and rounded purchase quantities.

5 tools

Painting & drywall calculators

Drywall sheets, joint compound, fasteners, tape, and transparent opening deductions.

20 tools

Landscaping calculators

Mulch, soil, fill dirt, gravel, cut-and-fill, dump-truck loads, road base, driveway stone, sand, sod, seed, river rock, paver, paver base, french drain, pool volume, landscape fabric, asphalt sealer and asphalt quantities.

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Mulch calculator

Landscape bed volume, bulk mulch order, and whole-bag equivalent.

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Soil calculator

Bulk soil volume with a visible depth allowance and purchase rounding.

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Gravel calculator

Bulk gravel volume, estimated weight, and a visible delivery allowance.

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Sod calculator

Lawn area, waste allowance, and whole-roll sod purchase quantity.

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Paver calculator

Patio area, individual paver face coverage, and whole-paver order quantity.

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Asphalt calculator

Compacted asphalt volume and tonnage from area, depth and a stated mix density.

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Sand calculator

Bulk sand volume and tonnage from area, installed depth, a visible compaction factor and supplier density.

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Paver base calculator

Crushed-stone base and bedding-sand volumes under a patio from area, base thickness and sand thickness.

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Polymeric sand calculator

Bag count of joint sand from patio area and the coverage printed on the polymeric-sand bag.

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Gravel driveway calculator

Driveway gravel volume and tonnage from length, width, compacted depth and supplier density.

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Grass seed calculator

Pounds of seed from lawn area and the labelled rate per 1,000 square feet.

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River rock calculator

Decorative river-rock volume and tonnage from bed area, installed depth and supplier density.

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French drain calculator

Drainage-stone volume, pipe length and wrap-fabric area from trench length, width, depth and pipe diameter.

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Pool volume calculator

US gallons of water in a rectangular or circular pool from plan size and average depth. Not a chemical dose.

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Fill dirt calculator

Fill-dirt volume and tonnage from area and compacted depth, with swell sitting in the waste field.

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Landscape fabric calculator

Weed-barrier roll count from bed area and the net coverage of one roll after overlap.

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Asphalt sealer calculator

Whole gallons of driveway sealer from area, coats and the labelled coverage per gallon.

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Road base calculator

Crusher-run or class II base volume and tonnage from driveway or pad area, compacted depth and supplier density.

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Cut and fill calculator

Cut volume, fill volume and net import or export from pad length, width and depths. Not a grading design.

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Dump truck calculator

Whole dump-truck loads from a stated material volume and truck capacity.

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15 tools

Lumber & framing calculators

Board feet, stairs, deck boards, deck stain, shiplap, wainscoting, baseboard, crown, ramps, balusters, studs, joists, rafters, linear lumber, and sheet goods.

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Board feet calculator

Lumber board-foot quantity from stated thickness, width, length, piece count and allowance.

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Wall stud calculator

Preliminary wall-stud count from wall run, spacing, openings and a visible allowance.

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Floor joist calculator

Preliminary joist count and total linear footage from framing run, span and stated spacing.

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Rafter calculator

Preliminary paired-rafter count and rafter length from roof plan dimensions, pitch and spacing.

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Linear lumber calculator

Whole stock-board count from total linear run, selected stock length and visible allowance.

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Plywood calculator

Whole sheet-goods quantity from rectangular coverage, selected sheet coverage and allowance.

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Stair calculator

Preliminary riser count, tread run and stringer length from total rise and target step dimensions.

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Deck board calculator

Deck-board count and linear footage from deck size, board width, gap and stock length.

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Baseboard calculator

Stock-length sticks of baseboard from room perimeter after door deductions, with a visible cutting allowance.

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Crown molding calculator

Stock-length sticks of crown from the full room perimeter, with extra waste for coped inside corners.

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Wheelchair ramp calculator

Ramp run length and slope percent from total rise and a stated slope ratio. Planning geometry only — not an ADA approval.

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Baluster spacing calculator

Baluster count and clear gap for a run between posts, using a maximum opening you can set. Default 4 in is the common sphere-rule planning figure, not a code stamp.

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Deck stain calculator

Whole gallons of deck stain from deck area, coats and the coverage printed on the can.

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Shiplap calculator

Shiplap board count from wall width, height and the exposed face after overlap, rounded to whole sticks of the stock length you buy.

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Wainscoting calculator

Stock-length sticks of wainscot from room perimeter after door deductions, with the chair-rail height kept visible for area.

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5 tools

General estimating calculators

Visible waste, markup, tax, contingency and joint-sealant calculations for an estimate.

7 tools

Utilities calculators

Reusable area, volume, acreage, grade, trench excavation, 3-4-5 layout check, pipe volume, and length-conversion utilities for field planning.

8 tools

Fencing calculators

Wood-fence pickets, privacy boards, vinyl panels, aluminum sections, chain-link fabric, stain gallons, gate kits, post caps, posts, rails, and post-hole concrete with spacing kept visible.

13 tools

Exterior calculators

Siding squares, vinyl starter and J-channel, house wrap, rigid foam, board-and-batten, soffit, fascia, batt and blown-in insulation, stucco bags, gutter and downspout counts.

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Siding calculator

Wall and gable siding area after openings, then squares and coverage units with a visible allowance.

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Insulation calculator

Batt or roll count from net coverage area, product coverage and a visible cutting allowance.

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Blown-in insulation calculator

Minimum whole-bag count from net area and the exact product, application and R-value chart's minimum-bags-per-1,000-ft² rate; optional extra stays separate.

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Stucco calculator

Stucco bag count from net wall area, number of coats and the selected bag's coverage per coat.

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Gutter calculator

Gutter and downspout piece counts from eave length, stock piece length and downspout runs.

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House wrap calculator

Weather-resistive-barrier roll count from wall perimeter, height, opening deductions and the net coverage of one roll.

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Board and batten calculator

Board count and batten count from wall width, the exposed board face and a batten at each joint including the ends.

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Soffit calculator

Soffit panel count from eave length, soffit width and the face of one panel.

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Fascia board calculator

Fascia-board sticks from eave plus rake run, rounded to the stock length you will buy.

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Vapor barrier calculator

Poly roll count from floor or crawl area and the net coverage of one roll after the labelled lap.

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Downspout calculator

Downspout count from eave length and spacing, plus the number of stock pieces for the drop to grade.

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Foam board calculator

Rigid-foam sheet count from wall area after openings and the face of one panel.

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Vinyl siding calculator

Vinyl-siding squares, starter pieces and J-channel from wall area after openings.

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