Calculate materials. Estimate costs. Plan your project.
Free construction and home-improvement calculators for concrete, gravel, roofing, landscaping, flooring, framing and more.
Or describe your project
Popular calculators
Square Footage Calculator
Calculate area for rectangles, triangles, circles and multi-room projects.
Gravel Calculator
Estimate gravel, crushed stone or rock needed by cubic yard and by ton.
Cubic Yard Calculator
Convert length, width and depth into cubic yards for any bulk material.
Asphalt Calculator
Estimate asphalt tonnage for driveways, parking areas and paths.
Concrete Slab Calculator
Estimate concrete for a slab in cubic yards and pre-mixed bags.
Roof Pitch Calculator
Convert rise and run into pitch notation, angle and slope percent.
Stone Calculator
Estimate landscaping stone including flagstone, river rock and rip rap.
Dirt Calculator
Estimate fill dirt for grading, excavation and backfill projects.
Topsoil Calculator
Estimate topsoil for lawns, gardens and raised beds.
Sand Calculator
Estimate sand for paver base, play areas or fill by cubic yard and ton.
Concrete Block Calculator
Estimate concrete blocks and mortar for a wall, minus openings.
Linear Foot Calculator
Add up multiple runs into a total linear footage, with waste allowance.
Rafter Calculator
Find rafter length from building width, pitch and overhang.
From calculation to complete estimate
Save any calculator result to a project, add materials and labor, apply your markup and tax, and generate a professional PDF quote — all in one place.
- Save calculations to reusable projects
- Build a material and labor cost breakdown
- Generate branded, customer-ready PDF estimates
AI Project Assistant
Describe your project in plain language and the assistant figures out which calculators to run — concrete, gravel base, rebar and more — then builds you a material list you can review before saving.
The assistant never invents quantities — every number comes from the same deterministic calculators used across the site.
For contractors
Save customers and projects, build a price book, estimate labor and materials, apply markup, and send professional quotes — plus get eligible for the lead marketplace.
Learn moreFor homeowners
Get your material estimate free, then request quotes from local, vetted contractors when you're ready — no obligation, and your details are never shared without consent.
Find a ProRecently added calculators
Concrete Slab Calculator
Estimate concrete for a slab in cubic yards and pre-mixed bags.
Concrete Calculator
Estimate concrete for slabs, footings or columns in cubic yards.
Rebar Calculator
Estimate rebar bars and 20ft sticks for a slab grid layout.
Roof Pitch Calculator
Convert rise and run into pitch notation, angle and slope percent.
Board Foot Calculator
Calculate board feet and lumber cost from thickness, width and length.
Fence Calculator
Estimate fence posts, panels and footing concrete for a new fence.
How it works
Calculate
Pick a calculator and get an instant material estimate — no signup required.
Plan
Save the result to a project, add materials, and build a full cost estimate.
Build
Generate a quote, or request local contractor quotes when you’re ready.
Frequently asked questions
Are the calculators really free?
Yes — every calculator on this site is free and fully usable without an account. Signing up only adds the ability to save projects and build full estimates.
How accurate are the estimates?
Calculations use standard construction formulas and industry-average material densities. Actual needs can vary by supplier, site conditions, and installation method — always confirm with your supplier or contractor for final orders.
Can I get a quote from a local contractor?
Yes — after most calculator results, you can request local quotes. We only share your project details with contractors after you give explicit consent.