Area Calculator

Calculate the volume of common 3D shapes including cube, sphere, cylinder, cone and pyramid with results in cubic cm, m and litres

Find the missing side of a right triangle or check if three sides form a right triangle. Visual SVG diagram with step-by-step working

Calculate percentages easily — find X% of a number, percentage change, increase and decrease. Four calculators in one tool.

Calculate volume in cubic feet from length, width and height. Supports feet, inches, cm, metres and yards with conversions to litres, gallons and more