📐 Pythagorean Theorem Calculator

The Pythagorean theorem states that in a right triangle, the square of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides. The formula is: a² + b² = c².

Enter any two known side lengths of a right triangle, and the calculator will automatically compute the third side. You can also calculate the area and perimeter of the triangle.

The hypotenuse is the longest side of a right triangle, located opposite to the right angle (90°). It's always the side labeled 'c' in the Pythagorean theorem formula.

No, all measurements must use the same unit. However, you can select your preferred unit (cm, m, in, ft) and the calculator will maintain consistency throughout the calculation.

Pythagorean triples are sets of three positive integers that satisfy the Pythagorean theorem. Common examples include (3,4,5), (5,12,13), and (8,15,17). These are useful for quick mental calculations.

Errors typically occur when: (1) trying to find a leg that would be longer than the hypotenuse, (2) entering negative numbers, (3) leaving required fields empty, or (4) entering non-numeric values.

The calculator provides results accurate to the number of decimal places you specify (1-6 digits). However, due to floating-point arithmetic limitations, very large numbers may have minor precision issues.

No, this calculator is specifically designed for right triangles (triangles with a 90° angle). For other triangle types, you would need to use the law of cosines or other geometric formulas.