- Construction Calculator
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Wall Framing Stud CalculatorCalculate how many wall studs you need based on wall length and stud spacing (12", 16", 24" on center), plus extra studs for doors and windows.
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French Drain CalculatorCalculate how much gravel a French drain needs in cubic yards. Enter trench length, width, and depth to estimate volume and gravel tonnage.
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Limestone CalculatorCalculate how many tons of crushed limestone you need. Enter length, width and depth to get volume in cubic yards and total tonnage.
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Plate Weight CalculatorCalculate the weight of a metal plate or sheet from length, width, thickness and material density. Supports steel, aluminum, copper and custom density.
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Rebar CalculatorFree rebar calculator: enter slab length, width and bar spacing to get the number of bars in each direction, total rebar length and pieces needed.
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Rip Rap CalculatorCalculate how many tons and cubic yards of rip rap you need for erosion control. Enter length, width, depth and stone density to estimate material.
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Retaining Wall Block CalculatorEstimate how many retaining wall blocks you need from wall length, height and block size. Includes waste allowance, rows, and total wall area.
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River Rock CalculatorCalculate how many tons and cubic yards of river rock you need. Enter length, width and depth to estimate landscaping rock and cost-planning quantities.
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Rolling Offset CalculatorCalculate the true offset and pipe travel for a rolling offset. Enter horizontal and vertical offsets plus fitting angle (45°, 22.5°, etc.).
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Sand CalculatorCalculate how many tons and cubic yards of sand you need. Enter length, width and depth to estimate sand for paths, sandboxes and base fill.
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Sonotube Concrete CalculatorCalculate how much concrete you need to fill a Sonotube. Enter tube diameter and height to get cubic yards, cubic feet, and the number of bags.
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Steel Plate Weight CalculatorCalculate the weight of a steel plate from its length, width, thickness and density. Get volume in cm³ and weight in kg instantly.
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Siding CalculatorFree siding calculator: enter wall width, height, and openings to estimate net wall area and the number of siding squares needed, including waste.
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Spiral Staircase CalculatorCalculate spiral staircase steps, actual step height, tread rotation angle and tread depth from total rise, step height, rotation and radius.
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Box Fill Calculator (US / NEC 314.16)US NEC 314.16(B) box fill calculator. Enter conductors, grounds, clamps and devices to find required box volume and check if your box is adequate.
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Sound Absorption Coefficient CalculatorCalculate the average sound absorption coefficient of a room from each surface's area and α. Computes total absorption (sabins) and weighted average.
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Shiplap CalculatorCalculate how many shiplap boards you need for any wall. Enter wall size, board dimensions and waste allowance to get an accurate board count.
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Stair Carpet CalculatorCalculate how much carpet runner you need for a staircase. Enter steps, tread depth, riser height and width to get length in feet and area in sq ft/yd.
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Reverberation Time CalculatorCalculate room reverberation time (RT60) with the Sabine formula from volume, surface area, and average absorption coefficient. Fast, free acoustics tool.
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Square Yard CalculatorCalculate area in square yards from length and width in feet. Free square yard calculator for flooring, carpet, concrete, and landscaping projects.
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Wallpaper CalculatorCalculate how many rolls of wallpaper you need from your room perimeter, wall height and roll size. Free, fast and easy to use.
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Wainscoting CalculatorFree wainscoting calculator: enter wall perimeter, panel width and height to find how many panels you need and the total coverage area in square feet.
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Birdsmouth Cut CalculatorCalculate the birdsmouth seat and heel cut depths for roof rafters from rise, run, and seat depth. Get the plumb cut and pitch angle instantly.
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Earthwork Soil Volume Conversion CalculatorConvert earthwork soil volume between bank (in-situ), loose (excavated) and compacted states using swell factor L and compaction factor C, in cubic meters.
