All calculators

Concrete

• Concrete Slab Calculator Yards, bags & cost — patios, driveways, shed bases
• Concrete Footing Calculator Strip runs and pad footings by trench size
• Sonotube Calculator Bags of concrete per tube for piers and posts
• Concrete Block Calculator Blocks, mortar bags, and core fill for CMU walls

Framing

• Stair Calculator Rise & run, stringer length, and IRC checks
• Framing Calculator Wall studs, plates & sheathing with costs
• Deck Calculator Boards, joists & screws from real row geometry
• Board Foot Calculator Lumber volume & cost from nominal dimensions

Roofing

• Roofing Calculator The whole materials list — shingles to drip edge
• Roof Pitch Calculator Rise & run to degrees, slope %, and area multiplier
• Rafter Length Calculator Span, pitch and overhang to cut length and board
• Roof Shingle Calculator Bundles, squares and underlayment from the footprint
• Gambrel Roof Calculator Barn-roof rafters, angles, ridge height & area
• Roof Sheathing Calculator 4×8 sheets, nails & cost from footprint and pitch
• Metal Roof Calculator Panels, cut lengths, screws & cost by profile
• Roof Pitch Multiplier The slope factor for every pitch, with chart

Aggregates

• Gravel Calculator Tons & yards for crushed stone and base
• Sand Calculator Paver bedding, sandbox and masonry sand by the ton
• River Rock Calculator Decorative rock with depth sized to the stone
• Asphalt Calculator Tons of hot mix & cost by area and depth
• Paver Base Calculator Gravel base & bedding sand under pavers, by the ton
• Fill Dirt Calculator Yards & truck loads with compaction built in
• Tonnage Calculator Tons of any aggregate from area, depth & density
• Limestone Calculator #57, screenings & large stone by the ton
• Road Base Calculator Dense-grade driveway lifts, compacted density
• Crushed Concrete Calculator Recycled base tons — the budget driveway
• Stone Dust Calculator Screenings for setting beds & paths
• Topsoil Calculator Yards, 40 lb bags & hauling weight
• Mulch Calculator Yards & 2 ft³ bags with coverage per yard
• Stone Calculator Tons of any stone — crushed, clean, or decorative
• Gravel Driveway Calculator All three lifts priced from one driveway size
• Landscape Calculator Tally every bed into one material order
• Compost Calculator Yards & 1 ft³ bags for beds and topdressing
• Rip Rap Calculator Armor stone for banks & slopes, by the ton
• Gravel Size Chart #8 to rip-rap — what every screen number means
• Density of Granite Solid, crushed & DG — the reference numbers

Plumbing

• Pipe Volume Calculator Gallons, liters & water weight from any inner diameter

Masonry

• Brick Calculator Bricks per ft², mortar bags, and courses

Fencing

• Fence Calculator Posts, rails, pickets & concrete with itemized cost

Interior & finishes

• Drywall Calculator Sheets, screws, compound & tape for any room
• Paint Calculator Gallons by room size, coats & coverage
• Tile Calculator Tiles, boxes & thinset by floor size
• Flooring Calculator Plank & laminate in whole boxes, with underlayment
• Insulation Calculator Bags of batts for walls or attic, by package coverage

Electrical

• Voltage Drop Calculator Volts & percent lost over any run, with the gauge that passes

HVAC

• CFM Calculator Airflow from room volume and air changes per hour

Measuring

• Square Footage Calculator Rectangles, circles & triangles with a running total
• Cubic Yard Calculator Length × width × depth to yards, meters & tons
• Cubic Yards to Tons Yards ↔ tons by material density, both directions

New calculators ship every few weeks — the roadmap covers 150+ tools across every trade.