📐 Geometry Calculators

Area, perimeter, volume and surface area of common shapes, plus Pythagoras, distance and aspect ratio.

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Area CalculatorCalculate the area of a square, rectangle, triangle, circle, trapezoid and more.
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Aspect Ratio CalculatorFind the aspect ratio of a width and height and resize while keeping the ratio.
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Circle CalculatorFind radius, diameter, circumference and area from any one value.
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Cone CalculatorFind volume, slant height and surface area of a cone.
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Cube CalculatorFind volume, surface area and diagonals of a cube.
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Cylinder CalculatorFind volume, curved surface and total surface area of a cylinder.
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Distance Calculator (Coordinates)Find the distance, midpoint and slope between two points in 2D or 3D.
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Perimeter CalculatorFind the perimeter of common 2D shapes.
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Pythagorean Theorem CalculatorFind the missing side of a right-angled triangle.
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Rectangle CalculatorFind area, perimeter and diagonal of a rectangle.
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Sphere CalculatorFind volume, surface area and circumference of a sphere.
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Square CalculatorFind area, perimeter and diagonal of a square.
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Surface Area CalculatorFind the surface area of cubes, boxes, spheres, cylinders, cones and pyramids.
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Trapezoid CalculatorFind area, median and perimeter of a trapezoid.
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Triangle CalculatorFind area, perimeter, angles and type of a triangle from its three sides.
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Volume CalculatorCalculate the volume of a cube, box, sphere, cylinder, cone and more.
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Concrete CalculatorCalculate concrete volume, cement bags, sand and aggregate for slabs, footings and columns.
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Excavation Volume CalculatorCalculate earthwork volume, swell and truck loads for trenches, pits and foundations.
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Paint CalculatorEstimate litres of paint for walls and ceilings, with doors, windows and coats.
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Roof Area CalculatorCalculate sloped roof area from the plan dimensions and pitch.
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Steel Weight CalculatorCalculate the weight of steel bars, flats, plates, pipes and tubes in any metal.
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TMT Bar Weight CalculatorCalculate TMT / rebar weight per metre, per bar and for any quantity.
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Tile CalculatorCalculate how many tiles and boxes you need for a floor or wall, with wastage and cost.

About Geometry Calculators tools

This section has 23 free tools including Area Calculator, Aspect Ratio Calculator, Circle Calculator, Cone Calculator, Cube Calculator, Cylinder Calculator and more. Every tool opens on its own page with a working calculator, clear explanation, formula, worked example and frequently asked questions. All results update instantly in your browser and can be exported as a snapshot image.

Results are mathematical calculations based on the dimensions you enter. Keep all dimensions in the same unit.