3 calculators
Solid Shapes
3D volume and surface-area calculators.
Calculators
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Barrel Volume Calculator
Calculate barrel, cask, or drum volume in litres and US or UK gallons from bilge diameter, head diameter, and height.
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Cone Volume Calculator
Calculate cone volume from radius, diameter, or circumference plus vertical height or slant height, then review surface area, cone net sector angle, litres.
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Volume Calculator
Calculate volume and surface area for common 3D shapes, then review the result in a conversion sheet covering cubic metres, cubic feet, litres, and gallons.