Triangle Calculator helps you find unknown sides, angles, area, perimeter, height, medians, and more in any triangle—using SSS, SAS, ASA, AAS, or SSA—with clear, step-by-step calculations.

Isosceles Triangle Calculator helps find any unknown side, angle, area, perimeter, or height in an isosceles triangle—along with step-by-step calculations.

Right Triangle Calculator helps find any unknown side, angle, area, perimeter, or altitude in a right-angled triangle—along with step-by-step calculations.

Calculate the hypotenuse, sides, angles, area, perimeter, altitude of a right-angled triangle using our Hypotenuse Calculator. Just input any two known values.

Calculate the area, missing sides, angles, perimeter, or altitude of any right triangle quickly with solution with the Area of a Right Triangle Calculator.

Perimeter of a Triangle Calculator finds the triangle’s perimeter using given side lengths or angles, showing the complete calculation process.