Enter Known Sides
Enter any two sides of a right triangle. The calculator will compute the remaining side, angles, and area.
Results
How to Use the Pythagorean Theorem Calculator
Using the Pythagorean Theorem Calculator is straightforward:
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Enter Your Values
Input the required numbers and parameters into the calculator fields. Each field is clearly labeled — simply type your values or use the spinner controls to adjust them. -
Configure Options
Select any additional options such as computation mode, currency, time period, or precision level. The calculator updates automatically as you change values. -
View the Results
The calculated result is displayed instantly with clear formatting. You can Copy the result to your clipboard or adjust input values to see how different scenarios affect the outcome.
FAQ
What is the Pythagorean theorem?
The Pythagorean theorem states that in a right triangle, the square of the hypotenuse (c) equals the sum of squares of the two legs: a² + b² = c². It is one of the most fundamental theorems in geometry.
How to use this calculator?
Fill in any two of the three side fields (leave one blank), then click "Calculate". The calculator will compute the missing side along with angles, area, and perimeter. You can also click example buttons to try it out.
Does the Pythagorean theorem apply to all triangles?
No, it only applies to right triangles (triangles with a 90° angle). For other triangles, use the Law of Cosines: c² = a² + b² - 2ab·cos(C).
What are Pythagorean triples?
Pythagorean triples are sets of three positive integers that satisfy a² + b² = c². Common examples include (3,4,5), (5,12,13), (8,15,17), and (7,24,25).