All building and DIY calculators
Every tool is free, needs no sign-up, shows its working and prints a clean one-page result. Pick the job you are planning.
Roofing Calculators
- Roofing CalculatorRoof area, squares, shingle bundles, underlayment, drip edge and ridge cap.
- Roof Pitch CalculatorConvert rise and run, degrees and slope percent. Get the pitch factor.
- Rafter Length CalculatorCommon rafter length, plumb and seat cuts, ridge height and rafter count.
- Roof Replacement Cost CalculatorItemized roof budget per square, with tear-off, decking and a two-quote comparison.
Gutter & Siding Calculators
Gravel, Soil & Paving Calculators
- Gravel CalculatorCubic yards, tons and bags of gravel, stone, sand or topsoil.
- Cubic Yard CalculatorCubic yards from feet and inches, for boxes, holes and several parts.
- Asphalt CalculatorTons of hot-mix asphalt for a driveway, lot or patch.
- Mulch CalculatorCubic yards or 2 and 3 cu ft bags of mulch for any bed.
- Topsoil CalculatorCubic yards, tons and bags of topsoil for lawns and beds.
- Dirt CalculatorCubic yards and tons of fill dirt to fill, raise or level ground.
- Sand CalculatorCubic yards, tons and 50 lb bags of sand.
- River Rock CalculatorTons, cubic yards and bags of river rock for beds and borders.
- Landscape Rock CalculatorTons, cubic yards and bags of decorative landscape rock.
- Paver Base CalculatorTons and cubic yards of crushed-stone base under pavers.
- Paver Sand CalculatorBedding sand in bags, yards and tons for a paver patio.
Concrete & Masonry Calculators
- Concrete CalculatorCubic yards and bags for slabs, footings, columns, sonotubes and steps.
- Concrete Slab & Bag CalculatorBags and cubic yards for slabs, pads, columns and post holes.
- Concrete Block CalculatorBlocks, rows and mortar bags for a wall, with openings taken off.
- Brick CalculatorBricks and mortar for a wall or planter, by brick size.
- Cement CalculatorBags of cement plus sand, gravel and water by mix ratio.
- Concrete Footing & Post Hole CalculatorBags of concrete for post holes, piers and tube forms, minus the post.
- Mortar CalculatorBags of mortar mix, or masonry cement and sand, for brick and block.
Measuring Calculators
- Construction Calculator (Feet, Inches & Fractions)Add, subtract and divide feet, inches and fractions to 1/16".
- Linear Feet CalculatorTotal linear feet, boards to buy with a cut list, or LF from square feet.
- Board Foot CalculatorBoard feet and cost for any list of boards.
- Cubic Feet CalculatorCubic feet, yards and gallons for boxes, cylinders and rooms.
- Cubic Feet to Cubic Yards ConverterConvert cubic feet, cubic yards, gallons, litres and cubic metres.
- Square Footage CalculatorAdd up rooms, yards and odd shapes. Subtract cut-outs.
Paint, Drywall & Tile Calculators
- Paint CalculatorGallons of wall paint, ceiling paint and primer, in cans you can buy.
- Drywall CalculatorDrywall sheets plus joint compound, tape and screws for a room.
- Tile CalculatorTiles, boxes and grout for floors, walls and backsplashes.
- Grout CalculatorPounds and bags of grout by tile size, joint width and thickness.
Pool & Pond Calculators
Deck, Stair & Fence Calculators
Remodeling Cost Calculators
Free Contractor Estimate, Invoice & Job Tools
- Free Contractor Estimate GeneratorLine-item estimate with markup or margin, sales tax, deposit and a PDF.
- Free Roofing Estimate TemplateRoofing estimate prefilled from the roofing calculator, priced per square.
- Free Contractor Invoice GeneratorInvoice with discount, sales tax, payments received, balance and due date.
- Free Work Order TemplateJob sheet with task checklist, labor, materials and customer sign-off.
- Free Construction Punch List TemplatePunch list by room with owners, progress and a printable sign-off sheet.
- Construction Project Schedule CalculatorPhases in working days to a finish date, with weekends, holidays and a Gantt chart.
- Change Order Calculator & RecordAdded work and credits to a revised contract sum, with sign-off lines.