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Feet and Inches Arithmetic CalculatorAdd, subtract, multiply, divide, scale, or convert lengths in feet and inches. Accepts fractions and mixed numbers; shows tape-measure fractions and decimals.
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Sandbox Sand CalculatorCalculate how much play sand you need to fill a sandbox. Enter length, width and depth to get volume, weight in pounds/tons and bag count.
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Rise Over Run to Degrees CalculatorConvert rise over run into a slope angle in degrees. Enter vertical rise and horizontal run to get the angle, percent grade, and ratio instantly.
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Pyramid Block CalculatorCalculate the total number of blocks needed to build a stepped square pyramid of n layers using the formula n(2n-1)(2n+1)/3.
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Paint CalculatorFree paint calculator: enter wall area, doors/windows, coats and coverage to find how many gallons of paint you need for any room.
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Thermal Conductivity Unit Conversion CalculatorConvert thermal conductivity between W/m·K, kW/m·K, J/cm·s, kcal/m·h, cal/cm·s, and BTU units instantly. Free, accurate physics unit converter.
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Building Coverage Ratio (Kenpeiritsu) CalculatorCalculate the building coverage ratio (kenpeiritsu), a Japan zoning measure: building footprint divided by site area, as a percent. Rounded up to 2 decimals.
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Thermal Resistance CalculatorCalculate the thermal resistance of a material layer from its thickness, thermal conductivity, and area using R = L / (k × A). Get R and conductance.
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Spindle Spacing CalculatorCalculate even gaps between spindles or balusters along a railing run. Enter run length, number of spindles, and spindle width to get exact spacing.
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Pipe Volume Calculator (By Radius & Length)Calculate pipe volume accurately with this easy-to-use pipe volume calculator. Input radius and length in various units (mm, cm, m, in, ft) for precise results.
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Wind Load CalculatorCalculate the wind load force on a structure or surface from wind speed, area, drag coefficient and air density using F = ½·ρ·v²·Cd·A.
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Chain Link Fence Cost CalculatorCalculate your chain link fence cost from length, height, gate width, and cost per square foot to get an instant total project estimate.
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Total Square Footage Calculator (Multiple Rooms)Add up the square footage of multiple rooms at once. Enter each room's length and width to get total square feet, square yards, and square meters.
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Laminate Flooring CalculatorCalculate how many boxes of laminate flooring you need. Enter room size, waste allowance and coverage per box to get exact boxes and total area.
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Gallons of Water in Pool CalculatorCalculate how many gallons of water fill your swimming pool. Enter length, width, and average depth in feet for an instant US gallon estimate.
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Square Feet to Yards of Concrete CalculatorConvert square feet and slab thickness into cubic yards of concrete needed for your pour. Free, fast estimator with a 10% waste allowance.
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Flooring Cost per Square Foot CalculatorEstimate your total flooring material cost. Enter room dimensions, price per square foot, and a waste factor to budget your project accurately.
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Deck Stair CalculatorCalculate your deck stairs easily with our free online calculator. Get accurate measurements for steps, riser height, total run, and stringer length for perfect deck construction.
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Square Footage Cost CalculatorCalculate total project cost from square footage. Enter length, width, and price per square foot to estimate flooring, paint, tile, or material costs fast.
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Square Feet to Cubic Feet CalculatorConvert square feet to cubic feet instantly. Enter floor area and depth/height to get volume in ft³ (and cubic yards) for concrete, mulch, soil and more.
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Lumber Shrinkage CalculatorCalculate lumber shrinkage with precision. Input initial dimensions and shrinkage percentage to get final size and volume change. Essential tool for woodworkers and construction professionals.
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Cubic Feet to Pounds CalculatorConvert cubic feet to pounds instantly. Enter volume and material density (lb/ft³) to estimate the weight of water, concrete, soil, gravel and more.
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Inch to Meter CalculatorConvert inches to meters instantly. Enter a length in inches and get the exact result in meters (1 inch = 0.0254 m), plus centimeters.
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Lumber CalculatorCalculate board feet, cubic feet, and cubic meters for your lumber projects. Simple and accurate lumber volume calculator for woodworking and construction.
