Construction & material calculators
Pick your material and get the amount, the waste to add on top, and a cost estimate. Every tool runs in your browser and works one-handed on a phone.
Concrete Block Calculator
Block count and mortar for any wall.
Open calculatorRebar Calculator
Bar count and total length for your slab grid.
Open calculatorConcrete Calculator
Cubic yards and bags for slabs, pads, and footings.
Open calculatorConcrete Slab Cost Calculator
What your slab costs installed, DIY, or by the yard.
Open calculatorSonotube Calculator
Bags of concrete per tube or post hole, any size.
Open calculatorRetaining Wall Block Calculator
Blocks, caps, courses, and base gravel for your wall.
Open calculatorGravel Calculator
Yards, tons, and bags for driveways, paths, and drainage.
Open calculatorMulch Calculator
Bags or yards to cover beds at the right depth.
Open calculatorSand Calculator
Yards, tons, and bags for any sand job.
Open calculatorTopsoil Calculator
How much soil to fill or top-dress a bed or yard.
Open calculatorRiver Rock Calculator
Tons and yards by rock size, with a depth check built in.
Open calculatorPea Gravel Calculator
Tons, yards, and bags for paths, patios, and play areas.
Open calculatorCrushed Stone Calculator
Tons by stone type: #57, crusher run, granite, chips.
Open calculatorFill Dirt Calculator
Yards, tons, and truckloads, with compaction figured in.
Open calculatorSod Calculator
Square feet, rolls, and pallets for a new lawn.
Open calculatorFrench Drain Calculator
Drain rock, fabric, and bags for your trench, pipe deducted.
Open calculatorAcreage Calculator
Acres, square feet, and hectares from your lot size.
Open calculatorSquare Feet to Acres Calculator
Convert between square feet, acres, hectares, and more.
Open calculatorPrice Per Acre Calculator
Total land cost, plus price per square foot and hectare.
Open calculatorRoof Pitch Calculator
Pitch, angle, and rafter length from rise and run.
Open calculatorStair Stringer Calculator
Risers, treads, and stringer length to code.
Open calculatorDrywall Calculator
Sheets, screws, and mud for walls and ceilings.
Open calculatorAsphalt Calculator
Tonnage for driveways and lots at any depth.
Open calculatorPaver Calculator
Pavers, base gravel, sand, and poly sand for your patio.
Open calculatorDriveway Cost Calculator
Gravel vs asphalt vs concrete vs pavers, priced side by side.
Open calculatorCubic Yard Calculator
Any space to cubic yards, with weight by material.
Open calculatorHow these calculators work
Every tool on this page runs the same way: measure the job in feet and inches, and the calculator converts to the unit your supplier actually sells in. Gravel and stone come back in tons and cubic yards. Concrete comes back in yards and bag counts. Sod comes back in rolls and pallets. Each result includes a waste allowance you control, because ordering the exact geometric amount is how jobs come up short.
A few of them go further than a straight conversion. The driveway cost calculator prices all four surfaces side by side. The sonotube calculator subtracts the post from the hole. The fill dirt calculator adds the compaction allowance most people learn about the hard way. And anything you calculate can be saved to a project list that totals material across tools, shared as a link, or printed as a ticket for the supply yard counter.
The math runs on published constants: bag yields from the manufacturers, concrete weight from ACI guidance, aggregate densities from FHWA references, stair limits from the IRC. The about page lists every source. If a number ever disagrees with your supplier's scale ticket, tell us and we'll check it against the reference.