Trade & Construction Calculators
Free, professional tools for contractors, tradespeople, engineers, and DIYers. Works 100% client-side, instant, and offline-capable.
Browse Trade & Construction Calculators
Select any of our professional calculators below to run high-precision equations in the browser.
Tank Volume Calculator
Compute storage volume for cylindrical, rectangular, and horizontal tanks, including partial-fill levels.
Launch Tool →Solar Panel Angle
Calculate optimal solar panel angles by latitude for year-round, winter, and summer tilt optimization.
Launch Tool →Home Rebuild Cost
Estimate insurance replacement values per square foot or square meter for home construction planning.
Launch Tool →Gear Ratio Calculator
Determine driven/drive ratios and speed results from engine RPM and tire diameters.
Launch Tool →Concrete Calculator
Compute slab, footing, and wall volumes in yards or cubic meters, with exact bag counts.
Launch Tool →Roof Pitch Calculator
Find pitch, slope grade percentage, degrees angle, and rafter lengths from run and rise.
Launch Tool →Plant Spacing Calculator
Calculate plant and crop population density for square layouts and triangular/staggered grids.
Launch Tool →LTL Freight Class
Estimate shipping freight class from cargo dimensions and weight density boundaries.
Launch Tool →Fence Post Calculator
Calculate post counts, spacing, and rails required for a run including gates.
Launch Tool →Fabric Yardage
Estimate linear fabric requirements in yards or meters based on pieces and pattern repeats.
Launch Tool →Lumber Board-Feet
Calculate board feet or cubic meters of rough lumber and cut planks instantly.
Launch Tool →Rebar Weight Calculator
Find total rebar weights for ASTM US sizes or metric diameters (SASO/ISO standards).
Launch Tool →Drywall Calculator
Compute drywall board counts, screws, and joint compound for wall and ceiling layout designs.
Launch Tool →Paint Calculator
Estimate paint volumes in gallons or liters needed to coat walls and ceilings, minus openings.
Launch Tool →Stair Stringer Calculator
Calculate risers, treads, board length, and layout angles for stair stringers.
Launch Tool →Aggregate Tonnage
Estimate short tons or metric tonnes of gravel, asphalt, topsoil, and crushed stone.
Launch Tool →Tile & Grout Calculator
Calculate tile counts, joint spacing, and grout weights in pounds or kilograms.
Launch Tool →BTU / HVAC Calculator
Compute heating/cooling loads and air conditioner capacity requirements in BTUs or Kilowatts.
Launch Tool →Voltage Drop Calculator
Calculate voltage drops and conductor wiring options for AWG and metric mm² runs.
Launch Tool →Wallpaper Calculator
Estimate standard wallpaper roll counts, drop measurements, and pattern repeat wastage.
Launch Tool →Brick & Mortar Calculator
Calculate standard modular bricks and mortar bag requirements for masonry runs.
Launch Tool →Flooring Calculator
Calculate planks, boxes, and underlayment rolls for hardwood, laminate, vinyl, and carpet.
Launch Tool →Get Professional Reference Sheets
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