Every DIY calculator you need. Free.

📐Square Footage CalculatorCalculate area for rectangles, L-shapes, triangles, and circles. 📐Right Triangle CalculatorSolve any right triangle — sides, angles, hypotenuse, and area. 🚜Dirt & Topsoil CalculatorConvert cubic yards to tons for fill dirt, topsoil, and grading. 📏Linear Footage CalculatorCalculate linear feet for baseboards, fencing, and decking boards. 📐Roof Slope CalculatorConvert rise/run into roof pitch, degrees, and percentages. 📐Roof Pitch CalculatorConvert rise and run into roof pitch, angle in degrees, percentage, and slope multiplier. 💧Tank & Pool VolumeCalculate exact gallons for rectangular pools, tanks, and pipes. 🏠Metal Roof CalculatorPanels, screws, and cost estimator for standing seam & corrugated. 🌬️Roof Vent Sizing CalculatorFind your exact attic ventilation requirements using IRC R806 ratios. 🕳️Concrete Footing & SonotubeCalculate bags or yards for round footings, fence posts, and piers. 🏗️Rebar CalculatorGrid bars, total linear feet, and 20-ft sticks for slabs and footings. 📐Roof Rafter LengthCalculate exact rafter cut length from run, pitch, and overhang. 🏠Roof Cost CalculatorEstimate roof replacement cost by material, with tear-off pricing. 🏠Gambrel Roof CalculatorRafter lengths, ridge height, and loft width for barn-style roofs. 📐Roof Truss CalculatorTruss count, chord lengths, and cost estimate by span and spacing. 📐Acreage & Sq Footage ConverterConvert acres to square feet, square inches, and back again. 🚜Cubic Yard & TonnageConvert cubic feet to yards and tons for dirt, gravel, and mulch. 🎨Paint & Primer EstimatorAccurately subtract doors and windows to find exact gallon requirements. 🎨Interior Painting Cost CalculatorEstimate the cost to paint a room or house, DIY or professional. 🌊Epoxy Resin CalculatorCalculate exact volume and cost for river tables, molds, and coasters. 🌀Golden Ratio CalculatorPhi (1.618) proportions and golden splits for design and woodworking. 🪵Board & Batten CalculatorEven batten spacing and layout for accent walls and wainscoting. 🪵Flooring Box CalculatorCalculate exact boxes of hardwood, laminate, or LVP needed for your room. 🪵Deck Board CalculatorCalculate exact board quantities and total linear feet to minimize lumber waste. 🚧Baluster Spacing CalculatorEven deck railing spindle spacing that meets the 4-inch code gap. 🧱Concrete Bag CalculatorCalculate exactly how many 60lb or 80lb bags you need for slabs and post holes. 🧱Concrete Cost & Yardage CalculatorFind cubic yards needed plus ready-mix and installed cost estimates. 🧱Tile Waste EstimatorCalculate cuts and waste for herringbone, hexagon, and diagonal patterns. 🏗️Drywall Sheet OptimizerCalculate exactly how many 4x8 or 4x12 sheets you need, minimizing scrap. 🏗️Drywall Cost CalculatorEstimate install, finishing, or repair cost by square footage. 🌱Mulch & Soil CalculatorConvert garden dimensions into cubic yards or exact number of bags to buy. 🚧Fence Material CalculatorCalculate exact panels, posts, and concrete bags needed for your yard. 🪜Stair Stringer CalculatorCalculate exact riser heights, total run, and stringer cuts with code checks. 🧱Paver Patio CalculatorCalculate pavers, gravel base, and jointing sand needed for your patio. 🏠Roof Shingle CalculatorCalculate squares, bundles, and underlayment rolls with pitch multiplier. 🪨Gravel & Tonnage CalculatorCalculate tons, cubic yards, and cost for driveways and patio bases. 🧶Insulation CalculatorCalculate rolls or bags of fiberglass insulation needed for walls and ceilings. 📏Baseboard & Trim CalculatorCalculate linear feet and boards needed for baseboards and crown molding. 🪵Lumber Board Foot CalculatorInstantly convert length, width, and thickness into accurate hardwood pricing. 🪵Wall Stud & Framing CalculatorStuds, plates, and on-center spacing for any wall length. 🪵Wood Beam CalculatorBuilt-up beam material count, board feet, and cost once you know your size. 🖨️3D Print Cost EstimatorCalculate true print costs, including filament usage and electricity. 🧱Cinder Block CalculatorCalculate exact blocks and mortar bags needed for walls and foundations. 🎨Wallpaper Roll CalculatorCalculate rolls needed, accounting for pattern repeats and wall deductions. 🏗️Drywall Finishing CalculatorCalculate buckets of mud, rolls of tape, and boxes of screws needed. 🛣️Asphalt CalculatorTons, cubic yards, and driveway cost for hot mix, cold patch, and millings. 🧱Retaining Wall CalculatorBlocks, cap blocks, and backfill gravel for segmental walls. 🏡Siding CalculatorSquares, boxes, and cost for vinyl, fiber cement, and engineered wood. 🌱Sod CalculatorRolls, pallets, and cost for a new lawn with waste factor. 🧶Carpet CalculatorSquare feet, square yards, padding, and installed cost with seam waste.