Home Project Cost & Material Calculators
Work out what a project will cost and how much material to order. Set the quantity, set the unit price, and see the total with a breakdown between materials and labour — plus a planning band so you know how much slack to leave. Every calculator runs instantly in your browser.
Quick answer: To estimate a home project, multiply the quantity (square feet, windows, linear feet) by an installed unit price, add removal and permits, then add 10–20% contingency. A mid-range bathroom remodel of 40 sq ft at $275 per sq ft lands near $11,000 plus contingency — and the calculators here let you change any of those numbers.
Home Project Cost Calculators
Bathroom Remodel Cost Calculator
Estimate a full bathroom remodel from your floor area, scope and layout, with demolition, permits and a contingency built in.
Kitchen Remodel Cost Calculator
Estimate a kitchen remodel from floor area, scope and layout, with demolition, permits and contingency included.
Home Remodel Cost Calculator
Estimate a whole-house or multi-room remodel from the area you are changing, with demolition, permits and contingency.
Window Replacement Cost Calculator
Estimate window replacement by count, style, frame material and glazing, with removal and disposal included.
Roof Replacement Cost Calculator
Estimate a roof replacement by roof area, material, pitch and the number of old layers to tear off.
Roof Cost Calculator
Estimate roof repair, partial replacement or a full new roof from roof area and material choice.
Home Addition Cost Calculator
Estimate a home addition from the added floor area, addition type and finish level, permits included.
Flooring Cost Calculator
Estimate flooring installation by area, material and subfloor condition, with old flooring removal included.
Deck Cost Calculator
Estimate deck building cost from deck area, decking material and how high the deck sits.
Fence Cost Calculator
Estimate fence installation by length, height and material, with old fence removal and a permit included.
Driveway Cost Calculator
Estimate a new driveway by area and surface type, with removal of the old surface and permits.
Garage Cost Calculator
Estimate an attached or detached garage from floor area and finish level, with site work and permits.
Siding Cost Calculator
Estimate siding replacement from wall area and material, with old siding removal and a permit.
Gutter Cost Calculator
Estimate gutter replacement by run length and material, with guards, removal and downspouts.
HVAC Cost Calculator
Estimate a new HVAC system from home size, system type and whether ductwork is included.
Paint Cost Calculator
Estimate interior painting by wall area, number of coats and surface condition, with labor included.
Solar Panel Cost Calculator
Estimate solar panel cost by system size in watts, panel tier, mounting and battery.
Pool Cost Calculator
Estimate above-ground and inground pool costs by surface area and shell type, with the extras noted.
Material Quantity Calculators
Concrete Calculator
Work out concrete volume in cubic yards and the number of 60 lb or 80 lb bags you need.
Concrete Slab Calculator
Size a concrete slab for a patio, driveway or shed floor, including thickness advice and reinforcement.
Concrete Footing Calculator
Calculate concrete for continuous footings and pier pads under decks, fences, porches and small additions.
Concrete Cost Calculator
Estimate delivered ready-mix cost per cubic yard, short-load fees, and what the same pour costs in bags.
Gravel Calculator
Estimate gravel by area and depth in cubic yards, tons and bags for driveways, paths and drainage.
Mulch Calculator
Work out mulch for beds and borders in cubic yards or in standard 2 cubic foot bags.
Topsoil Calculator
Calculate topsoil for lawns, raised beds and grading jobs in cubic yards, tons and 40 lb bags.
Sand Calculator
Calculate sand for paver bedding, leveling, play areas or mixing, in cubic yards, tons and bags.
Tile Calculator
Work out tile boxes, thin-set and grout for floors and walls, with the waste allowance included.
Drywall Calculator
Estimate drywall sheets, joint compound, tape and screws for walls and ceilings by area.
Sod Calculator
Estimate sod rolls, pallets and cost for a lawn from your square footage, with cutting waste included.
Carpet Calculator
Convert room area into carpet square yards, padding and waste for bedrooms, stairs and whole floors.
Insulation Calculator
Estimate batt and roll insulation by area and R-value for walls, ceilings and floors.
Wallpaper Calculator
Calculate wallpaper rolls from wall area, doors, windows and pattern repeat before you buy.
Paver Calculator
Calculate pavers per square foot, plus gravel base and bedding sand for patios and walkways.
Brick Calculator
Estimate bricks per square foot by brick size, plus mortar bags for walls, veneers and planters.
Paint Calculator
Work out gallons of paint and primer from wall area, coats, and doors and windows deducted.
Building & Measurement Calculators
Square Footage Calculator
Add up rooms and shapes to get total square feet, with an optional waste allowance included.
Square Footage Cost Calculator
Multiply a square footage figure by your own price per square foot to get project cost.
Lumber Calculator
Count studs, joists or boards and get board feet, total linear feet and a lumber cost range.
Board Foot Calculator
Work out board feet from thickness, width and length for hardwood sold by the board foot.
Roof Pitch Calculator
Turn roof rise over 12 inches of run into degrees, slope percentage and an area multiplier.
Rafter Length Calculator
Get common rafter length from building width, roof pitch and overhang, plus ridge and count.
Shingle Calculator
Turn roof area or footprint and pitch into squares, bundles, underlayment, ridge cap and nails.
Stair Calculator
Turn a total rise into riser count, riser height, tread run, stringer length and code notes.
Retaining Wall Calculator
Get blocks, caps, base and drainage gravel, and a cost range for a block retaining wall.
Browse by category
Home Project Cost Calculators
Every one of these calculators follows the same honest model: you set the quantity, you set the unit price, and the tool shows you…
Material Quantity Calculators
Ordering materials is where a project either saves money or makes a second trip to the yard. These calculators turn measurements i…
Building & Measurement Calculators
These are the layout tools — the ones you use with a tape measure in one hand. Convert a footprint into roof squares, work out whe…
Guides
Bathroom Remodel Cost
Typical US bathroom remodel costs, from a cosmetic refresh to a full mid-range rebuild, and which line items move the price.
Window Replacement Cost
Installed window prices by frame material and glazing, why bay windows cost more, and how window count drives the total.
Roof Replacement Cost
What a US roof replacement costs by size, material and pitch, and how tear-off and layer count change the bill.
How to Estimate Home Improvement Costs
A repeatable way to estimate a home improvement project: measure, price units, separate labor, add contingency.
How to Calculate Concrete Yards
The cubic yard arithmetic for concrete: slab volume, cubic feet to cubic yards, bag counts and waste allowance.
What Is a Roofing Square?
A roofing square is 100 square feet of roof surface. Here is how bundles, pitch and footprint convert into squares.
What Is a Board Foot?
A board foot is 144 cubic inches of lumber. Learn the formula and how to price a hardwood cut list.
DIY vs Hiring a Contractor
An honest look at doing a home project yourself versus hiring: cost, time, tools, permits and what can go wrong.
About these estimates
CostCalc calculators are planning tools. They combine the quantities you enter with typical U.S. unit prices, and every price is editable so you can drop in a real quote. Regional labour rates, season, site access, material availability and the contractor you choose will move the final number — always get local quotes before you commit, and treat these figures as a way to compare bids rather than to replace them.