Geometry

Solve shapes: circles, right and general triangles, the Pythagorean theorem, and slope.

4 free geometry tools, no signup.

• Circle CalculatorFind a circle radius, diameter, circumference, and area from any one known value. Fast and private.
• Pythagorean Theorem CalculatorFind the hypotenuse from two legs, or a missing leg from the hypotenuse, using a squared plus b squared equals c squared.
• Right Triangle CalculatorSolve a right triangle from two sides. Get the hypotenuse or missing leg, both acute angles, and the area.
• Slope CalculatorCalculate the slope and y-intercept of a line from two points, for y = mx + b. Fast and private.