Longhand

Geometry Calculators

Geometry calculators work with lengths, shapes and distances. Each shows the formula and the substitution step by step.

Which calculator do you need?

CalculatorUse it when
Pythagorean Theorem CalculatorYou have a right triangle with one unknown side.
Slope, Distance and Midpoint CalculatorYou have two points and want the slope, the straight-line distance, the midpoint or the line equation.
Pythagorean Theorem CalculatorFind the hypotenuse or a missing leg of a right triangle from the other two sides.
Slope, Distance and Midpoint CalculatorEnter two points to get the slope, distance, midpoint and equation of the line through them.

Every geometry calculator shows the formula and the working, and is checked against hand-worked examples. See how we verify our maths.