Archives: Calculators
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Radians to Degrees Calculator
Convert between radians, degrees, gradians and turns, with the exact multiple of pi shown wherever there is one.
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Volume Calculator
Find the volume of a box, cube, sphere, cylinder, cone, pyramid, prism or hemisphere — with the answer converted to litres and…
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Surface Area Calculator
Find the surface area of a box, cube, sphere, cylinder, cone, pyramid, prism or hemisphere, with each face listed separately.
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Sphere Calculator
Find a sphere's volume, surface area, radius, diameter or circumference from any one of them, with the working shown.
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Cylinder Calculator
Find a cylinder's volume, surface area and capacity in litres from its radius and height — or work backwards from a required…
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Cone Calculator
Find a cone's volume, slant height, curved surface and total surface area from its radius and height, or from its slant height.
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Perimeter Calculator
Find the perimeter of a rectangle, triangle, circle, parallelogram, trapezoid, regular polygon or ellipse — the distance all the way round.
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Area Calculator
Find the area of a rectangle, triangle, circle, trapezoid, parallelogram, ellipse, sector or regular polygon — one page for every common shape.
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Polygon Calculator
Find the area, perimeter, angles, apothem and radius of a regular polygon from its side length, apothem or circumradius.
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Trapezoid Calculator
Find the area, perimeter and median of a trapezoid from its two parallel sides and either the height or the two slanted…