llms.txt
# ProjectQty
> 41 transparent construction calculators, five browser-local project guides, and 87 answer-first estimating articles for U.S. DIY projects.
ProjectQty calculates in the browser, documents formulas and assumptions, and does not provide live supplier quotes, permits, structural design, or professional construction plans. Named projects and guide progress stay in the user's browser unless the user exports a file.
## Public-use policy
- ProjectQty's original public content may be collected for search indexing, real-time AI answers, and model training.
- When ProjectQty content informs an answer, cite and link to the page's canonical URL and preserve its measurement, assumption, and safety boundaries.
- Linked or quoted third-party standards, product documentation, images, and source material remain governed by their original publishers; ProjectQty does not grant rights to those works.
## Project guides
- [Roof replacement guide](https://projectqty.com/guides/roof-replacement): Plan roof pitch, shingles, gutters, and optional siding quantities from measured inputs without guessing inaccessible dimensions.
- [Room renovation guide](https://projectqty.com/guides/room-renovation): Plan paint, flooring, trim, drywall, and insulation quantities from measured room surfaces without treating the checklist as a construction plan.
- [Patio build guide](https://projectqty.com/guides/patio-build): Plan pavers, gravel base, and bedding sand from measured patio layers; structural and drainage design remain outside the guide.
- [Masonry wall guide](https://projectqty.com/guides/masonry-wall): Plan brick, mortar, cement, and optional reinforcement quantities while leaving structural and code decisions to qualified review.
- [Landscape bed guide](https://projectqty.com/guides/landscape-bed): Plan mulch, soil, compost, sod, and seed quantities from measured beds and exact product or supplier values.
## Articles
- [How Much Concrete Do You Need for a Slab?](https://projectqty.com/articles/how-much-concrete-for-a-slab): Calculate slab concrete in cubic yards and bags from length, width, depth, waste, and the exact product yield.
- [How Much Gravel Do You Need for a Driveway?](https://projectqty.com/articles/gravel-driveway-material-estimate): Calculate driveway gravel in cubic yards and tons from measured layers, compacted depth, and supplier density.
- [Gravel Depth Guide: How to Enter the Right Layer Thickness](https://projectqty.com/articles/gravel-depth-guide): Choose and document gravel depth as a project input without treating a generic depth as a universal recommendation.
- [Gravel Tons vs. Cubic Yards: How to Convert for Ordering](https://projectqty.com/articles/gravel-tons-vs-cubic-yards): Understand why gravel conversions require supplier density and how to keep volume and weight estimates separate.
- [How Many Cubic Yards of Mulch Do You Need?](https://projectqty.com/articles/mulch-cubic-yards): Estimate bulk mulch from bed area and placed depth, then compare the result with bag coverage and delivery units.
- [How Many Bags of Mulch Do You Need?](https://projectqty.com/articles/mulch-bag-count): Convert a measured mulch area and depth into whole bags using the product's printed coverage.
- [How Much Topsoil Do You Need for a Garden Bed?](https://projectqty.com/articles/topsoil-for-a-garden-bed): Estimate topsoil volume and optional weight from bed area, fill depth, and supplier density.
- [Compost Application Volume: Calculate Cubic Yards](https://projectqty.com/articles/compost-application-volume): Calculate compost volume from measured area and application depth while keeping soil and mulch layers separate.
- [Paver Base Materials: Estimate Pavers, Gravel, and Sand](https://projectqty.com/articles/paver-base-materials): Plan paver surface count, base aggregate, and bedding sand as separate layers with measured dimensions.
- [How Much Bedding Sand Do Pavers Need?](https://projectqty.com/articles/sand-bedding-layer): Estimate bedding sand from paver area and the actual specified layer depth, with supplier volume or weight conversion.
- [Sod or Grass Seed? Estimate Lawn Materials from Area](https://projectqty.com/articles/sod-and-grass-seed): Measure lawn area and compare sod coverage or label-rate seed quantity without assuming a universal product rate.
- [Grass Seed Application Rate: New Lawn vs. Overseeding](https://projectqty.com/articles/grass-seed-application-rate): Estimate grass seed from measured lawn area, the product label rate, bag weight, and the use case.
- [Concrete Patio Materials Checklist: What to Measure and Order](https://projectqty.com/articles/concrete-patio-materials-checklist): A measurement-first checklist for estimating concrete, base materials, joints, and order units for a patio project.
- [How to Estimate Concrete for Footings](https://projectqty.com/articles/concrete-footing-quantity-estimate): Calculate concrete footing volume, cubic yards, bags, and allowance from approved dimensions and product yield.
- [How Much Concrete Goes in a Post Hole?](https://projectqty.com/articles/post-hole-concrete-quantity): Estimate post-hole concrete from hole geometry, post diameter, quantity, and the actual bag yield.
- [Concrete Bag Yield: Read and Compare Package Output](https://projectqty.com/articles/concrete-bag-yield-explained): Learn how to read a concrete bag's stated yield, compare package outputs, and keep a product-specific yield in a material takeoff.
- [Concrete Waste Allowance: How to Handle Overages](https://projectqty.com/articles/concrete-waste-allowance): Use a transparent waste allowance for concrete without presenting a planning percentage as a universal rule.
- [How to Convert Cubic Yards to Concrete Bags](https://projectqty.com/articles/convert-cubic-yards-to-concrete-bags): Convert concrete volume to whole bags using 27 cubic feet per cubic yard and the exact yield on the product label.
- [How to Estimate Bricks for a Wall](https://projectqty.com/articles/estimate-brick-wall-materials): Estimate whole bricks from net wall area, actual brick dimensions, mortar joint width, openings, and waste.
- [How Much Mortar Do You Need for a Brick Wall?](https://projectqty.com/articles/mortar-for-brick-wall): Calculate mortar bags from brick or block count, joint assumptions, waste, and selected product yield.
- [Concrete Block Wall Estimate: Blocks, Mortar, and Openings](https://projectqty.com/articles/concrete-block-wall-estimate): Plan concrete masonry units from wall area, openings, block size, joint width, and whole-unit rounding.
- [Rebar Quantity Basics: Estimate Stock Lengths from Spacing](https://projectqty.com/articles/rebar-quantity-basics): Organize a rebar quantity from approved grid spacing, layers, laps, stock lengths, and explicit layout inputs.
- [Masonry Wall Material Takeoff: A Traceable Workflow](https://projectqty.com/articles/masonry-wall-project-guide): Use a measured sequence for bricks or blocks, mortar, cement, reinforcement, and separate design checks.
- [How to Estimate Roof Area from Pitch and Footprint](https://projectqty.com/articles/roof-area-and-pitch): Turn measured roof planes, pitch, and overhangs into a traceable roofing area before counting bundles or squares.
- [Roofing Bundles and Squares: How to Convert Roof Area](https://projectqty.com/articles/roofing-bundles-and-squares): Convert measured roof area into squares, bundles, rolls, and fasteners using the exact product coverage you supply.
- [Roofing Waste Allowance: Account for Cuts and Complexity](https://projectqty.com/articles/roofing-waste-allowance): Choose a transparent roofing allowance based on roof complexity, cuts, and product instructions.
- [How to Estimate Gutter Runs and Sections](https://projectqty.com/articles/gutter-run-estimate): Estimate gutter sections from measured eave runs while keeping slope, outlets, downspouts, and drainage design separate.
- [How to Estimate Siding from Net Wall Area](https://projectqty.com/articles/siding-net-wall-area): Estimate siding panels or boxes from wall area, openings, installed exposure, and package coverage.
- [Fence Material Takeoff: Posts, Rails, and Pickets](https://projectqty.com/articles/fence-material-takeoff): Estimate fence components from measured run, post spacing, picket width, gaps, rails, gates, and stock lengths.
- [Deck Board Takeoff: Boards, Linear Feet, and Waste](https://projectqty.com/articles/deck-board-takeoff): Estimate deck boards from measured area, actual face width, gap, stock length, direction, and cut plan.
- [Board Feet Explained: Measure Lumber Volume Correctly](https://projectqty.com/articles/lumber-board-feet): Calculate board feet from actual thickness, width, and length while keeping stock count and supplier units visible.
- [How Many Wall Studs Do You Need?](https://projectqty.com/articles/wall-stud-count): Estimate wall studs from measured wall length, approved spacing, openings, corners, and explicit framing allowances.
- [Asphalt Driveway Material Estimate: Area, Depth, and Tons](https://projectqty.com/articles/asphalt-driveway-material-estimate): Estimate asphalt quantity from measured area and compacted depth using the mix density supplied for the job.
- [How Many Gallons of Paint Do You Need for a Room?](https://projectqty.com/articles/paint-gallons-for-a-room): Estimate paint from wall and ceiling area, openings, number of coats, and the exact label coverage.
- [How Many Drywall Sheets Do You Need?](https://projectqty.com/articles/drywall-sheet-count): Estimate drywall sheets from net wall and ceiling area, panel dimensions, layout, and cut allowance.
- [How Many Boxes of Flooring Do You Need?](https://projectqty.com/articles/flooring-boxes): Estimate flooring boxes from measured floor area and package coverage, with a visible layout allowance.
- [How Many Boxes of Tile Do You Need?](https://projectqty.com/articles/tile-boxes): Estimate tile boxes from net tiled area, actual tile dimensions, package coverage, and pattern waste.
- [Carpet Roll Length: Estimate Linear Feet from Room Area](https://projectqty.com/articles/carpet-roll-length): Estimate carpet roll length using room dimensions, available roll width, seam layout, and professional installation planning.
- [How Many Wallpaper Rolls Do You Need?](https://projectqty.com/articles/wallpaper-rolls): Estimate wallpaper rolls from usable roll coverage, wall height, openings, and pattern repeat.
- [How Many Insulation Packages Do You Need?](https://projectqty.com/articles/insulation-packages): Estimate insulation packages from cavity area, product coverage, and the specified R-value or thickness.
- [Baseboard Linear Feet: Measure Perimeter and Stock Lengths](https://projectqty.com/articles/baseboard-linear-feet): Estimate baseboard and trim from room perimeter, doorway exclusions, stock length, and a cut plan.
- [How to Estimate Tile Grout Quantity](https://projectqty.com/articles/tile-grout-quantity): Estimate grout from tile area, actual tile dimensions, joint width, joint depth, and package yield.
- [Ceiling Tile Cartons: Estimate Tiles, Grid, and Waste](https://projectqty.com/articles/ceiling-tile-cartons): Estimate ceiling tile cartons from ceiling area, actual tile dimensions, layout, and package count.
- [Stone vs. Gravel: Choose the Right Quantity Unit](https://projectqty.com/articles/stone-vs-gravel): Compare stone and gravel quantity calculations using measured volume and product-specific density.
- [Volume Calculator for Boxes and Cylinders](https://projectqty.com/articles/volume-converter-shapes): Calculate volume for rectangular and cylindrical shapes, then convert the result to cubic yards, meters, or liters.
- [Cubic Feet to Cubic Yards: The Construction Conversion](https://projectqty.com/articles/cubic-feet-to-yards): Convert cubic feet to cubic yards with the divide-by-27 formula, keeping waste and product yield separate.
- [Stair Material Planning: Rise, Run, and Stringer Geometry](https://projectqty.com/articles/stair-material-planning): Use measured total rise and target riser and tread inputs to organize stair geometry before material ordering.
- [Roof Pitch Ratio: Rise, Run, Angle, and Rafter Length](https://projectqty.com/articles/roof-pitch-ratio): Understand roof pitch as rise over run and convert measured geometry into angle, slope, and rafter length.
- [Excavation and Fill Volume: Measure Cut, Fill, and Overbreak](https://projectqty.com/articles/excavation-fill-volume): Estimate simple excavation or fill volume from field dimensions while keeping soil behavior and haul planning separate.
- [How to Plan a Concrete Slab Estimate Without Live Prices](https://projectqty.com/articles/concrete-slab-cost-without-live-prices): Build a transparent slab quantity worksheet and add current local supplier pricing without pretending prices are live.
- [How Much Concrete Do You Need for a Driveway Slab?](https://projectqty.com/articles/concrete-driveway-slab-quantity): Estimate driveway-slab concrete from measured area, specified depth, separate sections, and a visible order allowance.
- [Concrete Sidewalk Volume: Calculate Yards and Bags](https://projectqty.com/articles/concrete-sidewalk-volume): Calculate sidewalk concrete from segments, width, depth, curves, and the selected ready-mix or bag yield.
- [Concrete Stair Tread Volume: Estimate Steps and Landings](https://projectqty.com/articles/concrete-stair-tread-volume): Estimate concrete for stair treads, risers, stringers, and landings by separating each geometric component.
- [Concrete Pier Volume: Calculate Round and Square Piers](https://projectqty.com/articles/concrete-pier-volume): Calculate concrete pier volume from diameter or width, depth, quantity, and the product yield used for ordering.
- [Concrete Curb and Gutter Quantity Estimate](https://projectqty.com/articles/concrete-curb-gutter-quantity): Estimate curb-and-gutter concrete by station, cross-section, length, and separate transitions or returns.
- [Cement and Sand Mortar Mix Quantity: Keep Ratios Traceable](https://projectqty.com/articles/cement-sand-mortar-mix): Plan cement and sand quantities from mortar volume and the selected mix ratio without treating a ratio as a product yield.
- [How Many Bags of Mortar Do You Need?](https://projectqty.com/articles/mortar-bag-count): Estimate whole mortar bags from masonry area, unit type, joint size, and the selected product coverage.
- [Brick Veneer Coverage: Estimate Bricks for a Facade](https://projectqty.com/articles/brick-veneer-wall-coverage): Estimate brick veneer units from net wall area, actual face dimensions, bond, openings, and cut allowance.
- [Concrete Block Wall Estimate with Door and Window Openings](https://projectqty.com/articles/block-wall-opening-deduction): Calculate net concrete block wall area after openings, then estimate blocks, mortar, and separate lintel work.
- [Rebar Grid Spacing: Estimate Bars and Stock Lengths](https://projectqty.com/articles/rebar-grid-spacing): Estimate rebar bar count and total length from grid dimensions, spacing, stock length, and lap assumptions.
- [Concrete Pool Deck Quantity: Measure Separate Pour Areas](https://projectqty.com/articles/concrete-pool-deck-quantity): Estimate pool-deck concrete from measured bands, coping zones, steps, and the specified slab depth.
- [Concrete Garage Floor Estimate: Volume Before Ordering](https://projectqty.com/articles/concrete-garage-floor-estimate): Estimate garage-floor concrete from measured bays, slab depth, thickened edges, and separate base materials.
- [Crushed Stone Patio Base: Calculate Cubic Yards and Tons](https://projectqty.com/articles/crushed-stone-patio-base): Estimate crushed-stone patio base from measured area, specified compacted depth, and supplier density.
- [How Much Stone Do You Need for a French Drain?](https://projectqty.com/articles/stone-french-drain-fill): Estimate drainage stone from trench length, width, depth, pipe envelope, and supplier density.
- [Topsoil for Low Spots: Estimate Fill by Average Depth](https://projectqty.com/articles/topsoil-low-spot-fill): Estimate topsoil needed to fill measured lawn or landscape low spots without hiding grade variation.
- [Raised Bed Soil Volume: Calculate Yards and Bags](https://projectqty.com/articles/raised-bed-soil-volume): Calculate soil for raised beds from inside dimensions, fill depth, liner details, and product bag coverage.
- [Tree Ring Mulch Quantity: Calculate Circles and Donuts](https://projectqty.com/articles/tree-ring-mulch-quantity): Estimate mulch for tree rings from outer radius, trunk clearance, and placed depth instead of a rectangular bed assumption.
- [Compost for Lawn Topdressing: Calculate Application Volume](https://projectqty.com/articles/lawn-topdressing-compost): Estimate compost for lawn topdressing from measured turf area and a documented application depth.
- [How Many Rolls of Sod Do You Need?](https://projectqty.com/articles/sod-roll-count): Estimate sod rolls or pallets from net lawn area, product dimensions, curves, and a visible cutting allowance.
- [Overseeding Grass Seed: Calculate Pounds by Lawn Area](https://projectqty.com/articles/overseeding-grass-seed): Estimate grass seed for overseeding from net lawn area and the selected product's application rate.
- [Sand for a Pool Base: Estimate Cubic Yards and Bags](https://projectqty.com/articles/sand-pool-base-quantity): Estimate sand for an above-ground pool base from measured footprint, specified depth, and product coverage.
- [Paver Joint Sand Quantity: Estimate Bags by Surface Area](https://projectqty.com/articles/paver-joint-sand-quantity): Estimate jointing sand from paver area, joint width, joint depth, and the selected product's coverage.
- [How Many Shingles Do You Need for a Hip Roof?](https://projectqty.com/articles/hip-roof-shingle-quantity): Estimate hip-roof shingles from measured roof planes, pitch, product coverage, hips, valleys, and cutting waste.
- [Roof Valley Waste: Plan Extra Shingles for Cuts](https://projectqty.com/articles/roof-valley-waste): Plan roofing waste for valleys, hips, dormers, and penetrations with a visible allowance tied to roof complexity.
- [Shed Roof Material Area: Calculate Roofing from Footprint and Pitch](https://projectqty.com/articles/shed-roof-material-area): Calculate a shed roof's sloped material area from footprint, overhangs, pitch, and product coverage.
- [Siding Squares from Net Wall Area: Deduct Openings](https://projectqty.com/articles/siding-squares-net-area): Estimate siding squares from gross wall area, measured openings, panel coverage, and a visible cutting allowance.
- [Siding for a Gable End: Calculate the Triangle](https://projectqty.com/articles/siding-gable-end-area): Estimate gable-end siding from wall width, gable height, openings, panel coverage, and cutting waste.
- [Gutter Run and Downspout Planning: Measure Linear Feet](https://projectqty.com/articles/gutter-run-and-downspout): Estimate gutter runs from roof edges, corners, outlets, and section lengths while keeping downspouts separate.
- [Fence Post Spacing: Calculate Posts, Corners, and Gates](https://projectqty.com/articles/fence-post-spacing-count): Estimate fence posts from measured runs, spacing, corners, ends, gates, and separate post types.
- [Fence Picket Count: Calculate Boards for Spacing and Gates](https://projectqty.com/articles/fence-picket-count): Estimate fence pickets from net run length, picket width, gap, gate openings, and the selected stock size.
- [Construction Material Takeoff Checklist](https://projectqty.com/articles/material-takeoff-checklist): Build a traceable construction material takeoff with drawing references, units, net quantities, waste assumptions, and order checks.
- [How to Estimate Materials from Construction Plans](https://projectqty.com/articles/material-takeoff-from-plans): Turn construction-plan measurements into a reviewable material takeoff without hiding drawing revisio
