Home & Construction Calculators
Plan material quantities and project budgets with transparent formulas and useful assumptions.
Interactive Room & Floor Plan Builder
Draw irregular spaces, label walls and estimate flooring, paint, drywall and trim.
Asphalt Calculator
Estimate tons and cubic yards of asphalt needed for a driveway, parking area, or pavement section.
Board Foot Calculator
Calculate board feet for rough lumber using thickness, width, length, and quantity.
Deck Cost Calculator
Estimate a deck project budget from size, material cost, labor, railing, and permit allowances.
Fence Calculator
Estimate fence panels, posts, rails, gate openings, and waste for a straight or perimeter fence run.
Flooring Calculator
Estimate square footage and boxes of flooring for a rectangular room with waste allowance.
Tile Calculator by Shape
Estimate square footage, tile or sheet quantities, waste, and full boxes across common tile shapes.
Gravel Calculator
Calculate cubic yards and estimated tons of gravel for driveways, walkways, pads, and landscaping.
Mulch Calculator
Calculate cubic yards and 2-cubic-foot bags of mulch for beds, borders, and landscaping.
Paint Calculator
Estimate gallons of wall paint from room perimeter, wall height, openings, coats, and paint coverage.
Roof Square Footage Calculator
Convert building footprint and roof pitch into estimated roof surface area and roofing squares.
Roofing Calculator
Estimate roofing squares, square footage, bundles, pitch adjustment, and waste.
Concrete Calculator
Estimate concrete volume, ready-mix yards, and bag quantities for rectangular or circular projects.
Concrete Slab Calculator
Calculate concrete yards and bag estimates for a rectangular slab, patio, pad, or walkway.
Concrete Bag Calculator
Convert a required concrete volume into an estimated number of premixed concrete bags.
Cubic Yard Calculator
Convert project dimensions into cubic yards for soil, gravel, mulch, concrete, and similar materials.
Stair Calculator
Estimate stair riser count, actual riser height, tread count, total run, and stair angle.
Square Footage Calculator
Calculate total square footage for one or more equal rectangular areas, with an optional waste allowance.
Generator Size Calculator
Estimate required generator running and peak watts from continuous loads, startup demand, and safety margin.
Post Hole Concrete Calculator
Estimate concrete volume and common bag quantities for round fence post holes.
Concrete Footing Calculator
Calculate ready-mix yards and bag quantities for rectangular concrete footings.
Driveway Cost Calculator
Plan concrete or asphalt quantities, regional material costs, and an optional labor allowance.
Project guides
Worked examples, ordering checks, and direct links to the calculators.
How much concrete for a 10×10 slab?
Compare common slab thicknesses, concrete yards, bag counts, and extra material.
Read guide →DrivewaysGravel driveway depth and tonnage
Turn driveway measurements into cubic yards and tons without mixing loose and compacted quantities.
Read guide →PaintingHow much paint do I need?
Estimate wall paint from room size, openings, coats, and the product’s coverage rate.
Read guide →RoofingHow many bundles of shingles do I need?
Convert roof area into squares and bundles with a product-aware waste allowance.
Read guide →Fence post concreteHow many bags of concrete for fence posts?
Calculate round-hole volume, subtract the post, and compare common bag sizes.
Read guide →FencingFence post spacing and panel count
Separate installed sections and post locations from spare-panel purchases.
Read guide →LandscapingHow much mulch do I need?
Convert landscape-bed area and depth into bulk yards or bag quantities.
Read guide →DecksHow much does it cost to build a deck?
Build a transparent budget from area, material, labor, railing, and permits.
Read guide →FlooringHow much flooring do I need?
Convert room area and waste into whole flooring cartons.
Read guide →DrivewaysAsphalt driveway thickness and tonnage
Calculate compacted pavement volume and estimated tons.
Read guide →StairsStair rise, run, and riser count
Plan equal risers, tread count, total run, and code checks.
Read guide →Backup powerHow to size a generator
Compare running load, added startup demand, and safety margin.
Read guide →From measurements to a shopping worksheet
Draw or measure a space, choose exact product coverage, compare purchase prices and print a materials checklist. Free and browser-based.
Room renovation
Connect flooring or tile, paint and trim to a measured room.
Concrete patio
Compare bag yield and ready-mix quotes, with supplier checks.
Open-run fence
Organize runs, a gate, shared posts and post-hole concrete.
L-shaped room walkthrough · Patio purchase walkthrough · Fence planning walkthrough