Geometry Formula Solver

Solve a right triangle from the two values you know, then copy a result or share the calculation. RIGHT TRIANGLES Choose two legs, hypotenuse and angle, base and angle, or hypotenuse and base. See missing lengths, both angles, area and perimeter. Angles must be greater than 0° and less than 90°. MINOR CIRCULAR SEGMENTS Enter radius and chord to calculate central angle, arc length, sagitta and segment area. The chord cannot exceed the diameter. SOLIDS Calculate cylinder, cone and sphere volume and total surface area. A sphere needs only its radius. Expand the formulas when needed. Decimal point, decimal comma and scientific notation are supported. Use one length unit throughout: areas are in units² and volumes in units³. Displayed results are rounded; copying and sharing retain calculation precision. Pay once. No account, ads, subscription, tracking or synchronization. Calculations run on device. Numeric inputs return to the original examples on relaunch.