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Free Home Projects Calculators
Use home project calculators to rough out material quantities before you shop, quote, or measure again. These tools make the math easier for paint, flooring, drywall, concrete, roofing, fencing, yard materials, and room planning while keeping the assumptions visible.
Browse and filter home & projectsAll home project calculators
Choose a tool for your task. Open its matching guide when you need the inputs or results explained.
Concrete CalculatorEstimate slab volume, cubic yards, cubic meters, and common 40, 60, and 80 lb bag counts.Roofing CalculatorEstimate roof squares and shingle bundles from footprint, pitch, and waste.Tile CalculatorEstimate floor, wall, or shower tile count from square feet, tile size, and waste.Mulch CalculatorEstimate mulch cubic yards, cubic feet, and 2-cubic-foot bags from area and depth.Gravel CalculatorEstimate gravel cubic yards and tons from length, width, depth, and density.Paint CalculatorEstimate interior wall paint gallons from room size, openings, coats, coverage, and extra percent.
Browse all 47 home & projects
The 6 choices above and these 41 tools make up this category.
- Drywall CalculatorEstimate drywall sheet count from project area, sheet size, and waste percentage.
- Carpet CalculatorEstimate carpet square yards, adjusted area, and roll length from room size, roll width, and waste.
- Flooring CalculatorEstimate flooring boxes, adjusted square feet, coverage ordered, and optional material cost.
- Wallpaper CalculatorFigure out how many wallpaper rolls to buy, plus rough material cost when you add a roll price.
- Fence CalculatorEstimate fence panels and posts from perimeter, panel width, post spacing, and gates.
- Deck Cost CalculatorEstimate rough deck project cost from deck size, decking price, railing, stairs, and waste.
- Deck Board CalculatorEstimate deck boards, fastener rows, deck screws, and optional board cost from deck and board dimensions.
- Deck Stain CalculatorEstimate deck stain gallons from deck size, railings, steps, coat count, coverage, and waste.
- Baluster CalculatorEstimate deck railing baluster count and equal open spacing after posts are subtracted from the rail run.
- Paver CalculatorEstimate paver count from project area, paver dimensions, and waste percentage.
- Paver Base CalculatorEstimate gravel base and bedding sand volume for patios, walkways, and paver projects.
- Polymeric Sand CalculatorEstimate polymeric sand volume and bag count from paver area, paver size, joint width, and joint depth.
- Grass Seed CalculatorEstimate grass seed pounds, bags, and optional cost from lawn area, seed rate, waste, and bag size.
- Lawn Mowing CalculatorEstimate lawn mowing time from lawn area, mower width, mowing speed, and efficiency.
- Plant Spacing CalculatorEstimate plants needed for a bed from bed size, plant spacing, and square or triangular layout.
- Siding CalculatorEstimate exact siding squares, rounded whole squares, and boxes from walls, gables, openings, and waste.
- Brick CalculatorEstimate wall bricks from length and height or known area, subtract openings, and use brick dimensions or a coverage table.
- Concrete Block CalculatorEstimate CMU wall units, courses, and layout waste from wall size, openings, and nominal unit size.
- Rebar CalculatorEstimate rebar grid counts, linear feet, and stock bars from slab size and spacing.
- Concrete Mix CalculatorEstimate cement, sand, and gravel from concrete volume and a mix ratio.
- Concrete Driveway CalculatorEstimate driveway concrete yards, bag counts, and rough material-only cost.
- Concrete Steps CalculatorEstimate concrete yards and bag counts for solid steps with an optional landing.
- Concrete Weight CalculatorEstimate concrete weight in pounds and US tons from cubic yards, density, and waste.
- Concrete Mesh CalculatorEstimate welded wire mesh sheets for a rectangular concrete slab.
- Concrete Block Fill CalculatorEstimate grout or concrete for filling CMU block cores.
- Retaining Wall CalculatorEstimate segmental retaining wall blocks, caps, courses, and base gravel.
- Rebar Weight CalculatorEstimate rebar weight from bar size, length, quantity, and waste.
- Concrete Footing CalculatorEstimate concrete volume and bag counts for straight rectangular footings.
- Concrete Column CalculatorEstimate concrete for round columns, piers, and tube forms.
- Post Hole Concrete CalculatorEstimate concrete bag counts for fence, deck, and mailbox post holes.
- Plywood CalculatorEstimate plywood sheet count, coverage, waste, and optional cost.
- Insulation CalculatorEstimate insulation pack count from area, openings, package coverage, and waste.
- Countertop CalculatorEstimate countertop square footage, backsplash area, waste, and optional material cost.
- Sod CalculatorEstimate sod rolls, pallets, adjusted area, and optional cost.
- Wall Stud CalculatorEstimate wall studs, plate pieces, and framing board count from wall layout.
- Board Foot CalculatorEstimate board feet from lumber size, quantity, and actual board dimensions.
- Cubic Yard CalculatorConvert length, width, depth, and waste into cubic feet and cubic yards.
- Pool Volume CalculatorEstimate pool gallons from shape, length, width, and average depth.
- Sand CalculatorEstimate sand cubic yards, tons, and bags from rectangular, round, or known-area measurements.
- Soil CalculatorEstimate soil for rectangular, round, or known-area beds in cubic yards, cubic feet, litres, and your bag size.
- Asphalt CalculatorEstimate asphalt tons from pavement size, compacted depth, density, and waste.
Help choosing a tool and checking its results
Plan material before you buy
Home project calculators are strongest when you measure carefully, choose the right unit, and add a realistic waste allowance for cuts, overlap, breakage, and mistakes.
I need concrete quantityEstimate cubic yards, bags, slab volume, and common project assumptions.I need paint coverageEstimate gallons from wall area, coats, doors, windows, and coverage rate.I need wallpaper rollsInclude pattern repeat, wall size, roll coverage, and waste percentage.I need flooring materialEstimate area and waste so cuts and layout do not surprise you later.
guides available
No signup needed
Guides that prevent material mistakes
Project calculators are strongest when you understand waste, coverage, product labels, and site conditions before buying materials.
Priority guides
Concrete guideSlab volume, bag estimates, cubic yards, waste, and supplier checks.Paint guideWall area, openings, coats, coverage rate, and why product labels matter.Wallpaper guideWaste percent, roll coverage, pattern repeat, openings, and dye lot checks.Flooring guideArea, waste, cuts, layout, and why room shape can change the order quantity.
Material and project planning shortcuts
Use these pages to estimate siding, brick, soil, concrete, deck stain, or mowing work before checking measurements and supplier details.
Useful shortcuts
Siding CalculatorEstimate siding area, waste, openings, and material quantities before supplier checks.Brick CalculatorPlan brick count from wall size, brick dimensions, mortar gap, and waste.Soil CalculatorEstimate soil volume from area and depth, then account for settling and ordering margin.Concrete guideCheck cubic yards, bags, slab depth, footings, and ordering limits before buying.Deck stain guideEstimate stain quantity from area, coats, coverage rate, railings, and weather conditions.Lawn mowing guideEstimate mowing time and cost from size, speed, trimming, obstacles, and service assumptions.
What this category helps with
- Material takeoffs for paint, drywall, flooring, fencing, deck planning, yard products, and outdoor projects.
- Clear unit handling for square feet, cubic feet, cubic yards, gallons, bags, pieces, and tons.
- Practical warnings for waste, supplier coverage, compaction, site conditions, and professional measurement.
Guides for this category
Each guide uses its matching tool, with example numbers and plain limits.
- How to use the Concrete CalculatorLearn how length, width, depth, and waste become concrete cubic yards and bag counts. Includes input tips, examples, result checks, and unit or mode notes f...
- How to use the Roofing CalculatorUse the Roofing Calculator with a 40 x 30 ft example. Learn roofing squares, pitch factor, shingle bundles, waste, and when to check a roofer.
- How to use the Tile CalculatorUse the Tile Calculator with a 120 ft2, 12 x 12 in, 10% waste example that becomes 132 tiles before box coverage and layout checks.
- How to use the Mulch CalculatorLearn how bed area, depth, and bag size become mulch yards and bags. Includes input tips, examples, result checks, and unit or mode notes for the Mulch Calc...
- How to use the Gravel CalculatorLearn how dimensions, depth, and density estimate gravel cubic yards and tons. Includes input tips, examples, result checks, and unit or mode notes for the...
- Paint Calculator GuideUse the Paint Calculator guide to estimate wall paint gallons from room size, doors, windows, coats, coverage, and extra percent.
Browse all 47 guides in this category
- How to use the Drywall CalculatorLearn how project area, sheet size, and waste become a whole drywall sheet count. Includes input tips, examples, result checks, and unit or mode notes for t...
- How to use the Carpet CalculatorLearn how room size, roll width, and waste become carpet square yards and rough roll length. Includes input tips, examples, result checks, and unit or mode...
- How to use the Flooring CalculatorLearn how square feet, waste percent, box coverage, and box price become a flooring order. Includes input tips, examples, result checks, and unit or mode no...
- How to use the Wallpaper CalculatorEstimate rolls for a rectangular room using fixed opening allowances, usable roll coverage, waste percent, and optional roll price. Includes input tips, exa...
- How to use the Fence CalculatorLearn how perimeter, panel width, post spacing, and gates estimate fence panels and posts. Includes input tips, examples, result checks, and unit or mode no...
- How to use the Deck Cost CalculatorLearn how deck size, waste, surface price, railing, and stairs build a rough budget. Includes input tips, examples, result checks, and unit or mode notes fo...
- Deck Board Calculator GuideUse the Deck Board Calculator guide to estimate boards, fastener rows, deck screws, and board-only cost from deck size, board width, joist spacing, and waste.
- Deck Stain Calculator GuideUse the Deck Stain Calculator guide to estimate stain gallons from deck size, rails, stairs, coats, label coverage, waste, and price per gallon.
- Baluster Calculator Guide | Railing SpacingLearn how to estimate baluster count and equal open spacing from rail length, post width, baluster width, and max gap before laying out a deck rail.
- How to use the Paver CalculatorLearn how area, paver size, and waste become a buying count. Includes input tips, examples, result checks, and unit or mode notes for the Paver Calculator.
- How to use the Paver Base CalculatorLearn how paver area, compacted base depth, bedding sand depth, waste, and gravel density estimate base cubic yards, base tons, and bedding sand.
- How to use the Polymeric Sand CalculatorLearn how square feet, paver size, joint width, joint depth, waste, and bag coverage estimate polymeric sand bags. Includes input tips, examples, result che...
- How to use the Grass Seed CalculatorLearn how lawn area and seed label rates estimate seed pounds and bags. Includes input tips, examples, result checks, and unit or mode notes for the Grass S...
- How to use the Lawn Mowing CalculatorLearn how lawn area, mower width, speed, and efficiency estimate mowing time. Includes input tips, examples, result checks, and unit or mode notes for the L...
- How to use the Plant Spacing CalculatorUse the Plant Spacing Calculator guide to estimate plant count from bed size, plant spacing, square rows, triangular layout, row count, and border setbacks.
- Measure Siding: Squares, Boxes & GablesMeasure siding for walls and gables, decide which openings to deduct, add waste, and convert square feet into siding squares and whole boxes.
- Brick Wall Formula: Area, Joints & WasteLearn the brick wall calculation formula for length, height, openings, brick size, mortar joints, coverage tables, and waste.
- How to use the Concrete Block CalculatorLearn how wall size, openings, nominal CMU size, and waste become a concrete block count. Includes input tips, examples, result checks, and unit or mode not...
- How to use the Rebar CalculatorLearn how slab size, spacing, stock length, and waste become rebar bars to buy. Includes input tips, examples, result checks, and unit or mode notes for the...
- How to use the Concrete Mix CalculatorLearn how concrete volume, waste, and a cement:sand:gravel ratio become a rough material list. Includes input tips, examples, result checks, and unit or mod...
- How to use the Concrete Driveway CalculatorLearn how driveway length, width, thickness, waste, and ready-mix price become concrete yards, bag counts, and rough material cost. Includes input tips, exa...
- How to use the Concrete Steps CalculatorLearn how step count, stair width, riser height, tread depth, landing depth, and waste estimate concrete yards and bag counts. Includes input tips, examples...
- How to use the Concrete Weight CalculatorLearn how cubic yards, density, and waste estimate concrete weight in pounds and US tons. Includes input tips, examples, result checks, and unit or mode not...
- How to use the Concrete Mesh CalculatorLearn how slab area, mesh sheet size, overlap, and waste estimate welded wire mesh sheets. Includes input tips, examples, result checks, and unit or mode no...
- How to use the Concrete Block Fill CalculatorLearn how block count, fill volume per block, and waste estimate CMU core fill. Includes input tips, examples, result checks, and unit or mode notes for the...
- How to use the Retaining Wall CalculatorUse the Retaining Wall Calculator guide to estimate segmental wall blocks, cap blocks, courses, base gravel, waste, and limits before ordering.
- How to use the Rebar Weight CalculatorUse the Rebar Weight Calculator with #4 and #5 examples. See the weight formula, #3 to #8 weight chart, slab tips, lap-splice cautions, and hauling limits.
- How to use the Concrete Footing CalculatorUse the Concrete Footing Calculator with a 30 ft by 16 in by 8 in example. See cubic yards, 60/80 lb bags, waste, cost checks, and code limits.
- How to use the Concrete Column CalculatorUse the Concrete Column Calculator for round piers and tube forms. Learn the cylinder formula, bag counts, 18 inch by 8 foot example, and what the estimate leaves out.
- How to use the Post Hole Concrete CalculatorUse the Post Hole Concrete Calculator for fence, deck, gate, and mailbox posts. Learn how post displacement, bag counts, waste, and limits work.
- How to use the Plywood CalculatorLearn how project area, 4x8 sheet size, waste, and price become plywood sheet count. Includes input tips, examples, result checks, and unit or mode notes fo...
- How to use the Insulation CalculatorLearn how square footage, openings, pack coverage, waste, and R-value planning work together. Includes input tips, examples, result checks, and unit or mode...
- How to use the Countertop CalculatorLearn how countertop run length, depth, backsplash, cutouts, waste, and price estimate kitchen countertop square footage. Includes input tips, examples, res...
- How to use the Sod CalculatorLearn how lawn area, roll coverage, pallet size, waste, and price estimate sod rolls. Includes input tips, examples, result checks, and unit or mode notes f...
- How to use the Wall Stud CalculatorLearn how wall length, stud spacing, openings, plate rows, board length, and waste estimate framing boards. Includes input tips, examples, result checks, an...
- How to use the Board Foot CalculatorUse the Board Foot Calculator with a 1 x 6 x 8 ft example. See the formula, actual vs nominal size cautions, 4/4 lumber notes, pricing, and log-rule limits.
- How to use the Cubic Yard CalculatorLearn how feet, inch depth, and waste become cubic yards. Includes input tips, examples, result checks, and unit or mode notes for the Cubic Yard Calculator.
- How to use the Pool Volume CalculatorLearn how pool shape, measurements, and average depth become gallons. Includes input tips, examples, result checks, and unit or mode notes for the Pool Volu...
- How Much Sand Do I Need? Yards, Tons & BagsEstimate how much sand you need in cubic yards, tons, and bags. Use rectangular, round, or known square-foot areas with depth, density, and waste.
- How Much Soil Do I Need? Beds, Yards & BagsMeasure one or several raised beds, choose fill depth and bag size, then calculate soil in cubic yards, cubic feet, litres, and bags.
- How to use the Asphalt CalculatorUse the Asphalt Calculator with a 30 ft by 12 ft by 3 in example. See cubic yards, tons, density, waste, and compaction limits.