Know exactly how much to buy.
Free calculators for home and yard projects. Punch in your measurements and get the materials, bags, and loads to order — no sign-up, no guesswork, and no second trip to the store.
Try it / Concrete Calculator
★ / Most used
01 / Landscaping & Yard
Gravel Calculator
Cubic yards and tons of gravel for a driveway, path, or base.
Open calculator →Mulch Calculator
Cubic yards and 2-cu-ft bags to cover a garden bed.
Open calculator →Topsoil Calculator
Cubic yards and tons of topsoil for beds, lawns, and leveling.
Open calculator →Sod Calculator
Square footage and pallets of sod for a new lawn.
Open calculator →Sand Calculator
Cubic yards and tons of sand for paver bedding, fill, or play areas.
Open calculator →Paver Base Calculator
Cubic yards and tons of crushed base under pavers or a patio.
Open calculator →River Rock Calculator
Cubic yards and tons of river rock for beds, borders, and drainage.
Open calculator →Compost Calculator
Cubic yards and bags of compost to top-dress beds or a lawn.
Open calculator →Grass Seed Calculator
Pounds of grass seed for a new lawn or overseeding.
Open calculator →Fertilizer Calculator
Pounds of lawn fertilizer for your yard size.
Open calculator →Pea Gravel Calculator
Cubic yards and tons of pea gravel for paths, patios, and beds.
Open calculator →Fill Dirt Calculator
Cubic yards and tons of fill dirt for grading and raising low spots.
Open calculator →Decomposed Granite Calculator
Cubic yards and tons of DG for paths, patios, and xeriscaping.
Open calculator →Rubber Mulch Calculator
Bags and cubic yards of rubber mulch for play areas and beds.
Open calculator →02 / Concrete & Masonry
Concrete Calculator
Cubic yards and 80-lb bags for a slab, patio, footing, or pad.
Open calculator →Brick Calculator
Number of bricks for a wall or veneer, plus waste.
Open calculator →Concrete Block Calculator
Number of CMU blocks for a wall, plus waste.
Open calculator →Fence Post Concrete Calculator
Bags of concrete to set fence posts, by hole size and count.
Open calculator →Sonotube Calculator
Bags and cubic yards of concrete for round column forms.
Open calculator →Concrete Sealer Calculator
Gallons of sealer for a patio, driveway, or garage floor.
Open calculator →Paver Calculator
Number of pavers for a patio or walkway, by paver size.
Open calculator →03 / Walls & Drywall
04 / Painting
Paint Calculator
Gallons of paint for any room, by wall area and coats.
Open calculator →Deck Stain Calculator
Gallons of stain or sealer for a deck or fence.
Open calculator →Wallpaper Calculator
Rolls of wallpaper for a room, with trim waste.
Open calculator →Primer Calculator
Gallons of primer for walls, by area and coats.
Open calculator →Exterior Paint Calculator
Gallons of paint for siding, by wall area and coats.
Open calculator →Ceiling Paint Calculator
Gallons of paint to cover a ceiling, by room size and coats.
Open calculator →Driveway Sealer Calculator
Gallons of sealcoat for an asphalt driveway.
Open calculator →Fence Stain Calculator
Gallons of stain for a wood fence, by length and height.
Open calculator →Garage Floor Epoxy Calculator
Epoxy kits to coat a garage floor, by area and coats.
Open calculator →05 / Flooring & Tile
Flooring & Tile Calculator
Square footage to buy (with waste) for floors and tile.
Open calculator →Carpet Calculator
Square footage (and yards) of carpet to buy, with waste.
Open calculator →Floor Underlayment Calculator
Rolls of underlayment for a laminate or engineered floor.
Open calculator →Tile Calculator
Number of tiles for a floor or wall, by tile size, plus waste.
Open calculator →Baseboard Calculator
Linear feet and pieces of baseboard or trim for a room.
Open calculator →Vinyl Plank Flooring Calculator
Square footage of vinyl plank (LVP) to buy, with waste.
Open calculator →06 / Pools & Water
Pool Volume Calculator
Gallons of water in a rectangular pool.
Open calculator →Round Pool Calculator
Gallons of water in a round or above-ground pool.
Open calculator →Pool Salt Calculator
Pounds and 40-lb bags of salt to reach your target salinity.
Open calculator →Pool Chlorine Calculator
Liquid chlorine to raise free chlorine by a target amount.
Open calculator →How / Three steps
Measure
Grab the length, width, and depth of your space. Feet and inches are fine.
Enter
Type the numbers in. The result updates the instant you stop typing.
Buy the exact amount
Order the bags, yards, tons, or gallons it gives you — plus a little for waste.
Read / Project guides
How Much Gravel Do I Need? Cubic Yards, Tons & Driveway Depth
The cubic-yards formula, the yards-to-tons conversion, and how deep to go.
Read guide →How Many Gallons Is My Pool? (And Why It Matters)
The simple formula, oval/round shapes, and why dosing depends on it.
Read guide →Bulk vs. Bags: When Ordering by the Cubic Yard Saves Real Money
Bags cost more per cubic foot. Here is the break-even — and when bags still win.
Read guide →How Much Salt Does a Saltwater Pool Need?
Target ppm, the pounds-per-gallon rule, and how to add salt without overshooting.
Read guide →How Much Concrete Do I Need? Estimating Slabs, Footings, and Bags
Work in volume, convert to yards and bags, and know when to order ready-mix instead.
Read guide →How Many Coats of Paint Do You Really Need?
Coverage is half the question; coats are the other half. When one, two, or three.
Read guide →Built for the hardware-store aisle
Most material mistakes happen at two moments: when you guess at the store, and when you come up short halfway through the job. These calculators fix both. Each one uses the real coverage rates the trade uses — a cubic yard is 27 cubic feet, an 80-lb bag of concrete yields about 0.6 of those feet, a gallon of paint covers roughly 350 square feet — so the number you get is the number you order.
Everything runs in your browser and updates as you type. Nothing is stored and nothing is sold to you. When a job is big enough that buying in bulk beats buying bags, the calculator shows you both so you can compare quotes yourself.