Geometry and Trigonometry Calculators
Geometry calculators solve shape problems: the missing side of a right-angled triangle, the angles of any triangle from three known values, the area of a circle or the properties of a regular polygon.
The triangle tools use the sine and cosine rules and say which rule was applied, so you can follow the method.
Pythagorean Theorem CalculatorFind the missing side of a right-angled triangle, with area, perimeter and angles.Triangle CalculatorEnter any three known values of a triangle, sides and angles, and get the rest, with the area, perimeter and the sine and cosine rule working.Arc Length CalculatorFind the length of an arc, the area of a sector, the chord and the segment from the radius and an angle.Regular Polygon CalculatorFind the area, perimeter, angles, apothem and diagonals of a regular polygon from its number of sides and one measurement.Trigonometry CalculatorFind the sine, cosine, tangent and their reciprocals of any angle with exact values, or find the angle from a sine, cosine, tangent or two sides.Area and Volume CalculatorWork out the area, perimeter, volume and surface area of common shapes in the units you choose.
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