Building Material Calculators — Mulch, Concrete, Paint & More

Estimate materials before you buy

Whether you're spreading mulch, pouring a patio, painting a bedroom or laying hardwood, HomeCalc helps you figure out how much material you actually need. Pick a calculator below, punch in your measurements, and get the answer in seconds. No accounts, no downloads, no waiting — the math happens right on your device.

Popular calculators

The ones people open most often when they're about to start a project.

🌿Mulch CalculatorPunch in your bed size and get the cubic yards, tons or bags of mulch to order.→🧱Concrete Pad CalculatorFigure out yards and bags of concrete for a patio slab, footing or post tube.→🎨Paint CalculatorSee exactly how many gallons to buy so you are not half a gallon short mid-room.→🔲Tile CalculatorFigure out tiles and boxes for a floor or wall, with waste and grout math included.→🪵Decking CalculatorCount the deck boards for a new deck, accounting for width, gaps and waste.→🏠Shingle CalculatorWork out shingle squares and bundles from your roof footprint and pitch.→🪨Gravel CalculatorWork out how much crushed stone you need for a driveway, path or base layer.→🟫Carpet CalculatorConvert room size to square yards of carpet, with roll-width seam waste.→

Browse by category

LandscapingEstimate mulch, gravel, soil, sod and paver quantities.→ConcreteEstimate concrete slabs, pads, footings and bags.→Paint & WallEstimate paint, wallpaper, drywall and wall materials.→FlooringEstimate flooring, tile and carpet quantities.→Deck & FenceEstimate deck, fence, stair and lumber needs.→RoofingEstimate shingles, roof pitch and gutter materials.→

How it works

1
Pick a calculator
Find the material you need — mulch, concrete, paint, tile, whatever.
2
Type in your measurements
Use feet, inches, yards or meters. You don't have to do the unit math in your head.
3
Get your order amount
It tells you cubic yards, bags, square feet or bundles — then round up and buy.

Frequently asked questions

Are these calculators really free?

Yes, every calculator on HomeCalc is free to use. No sign-up, no email, no paywall — open it and start calculating.

Do you save my measurements?

No. All calculations run locally in your browser. Your numbers never leave your device, which is also why the tools work instantly.

How accurate are the estimates?

They're solid planning estimates based on standard material densities. Always add 5–10% for waste, and re-check irregular shapes before you order.

Can I use this on my phone?

Absolutely. The site is responsive and works on phones, tablets and desktop computers.

Do I need to account for waste?

Yes. The numbers below are clean estimates. Add 5–10% on top for cuts, spills and miscalculated beds — pros usually budget more than that.

Can I use these for a real job?

They're built from standard formulas people use on job sites every day. For permits or structural work, still check with a local pro, but for buying materials these are right on.