Right Triangle Calculator
What is a Right Triangle?
A right triangle is a triangle that has one 90-degree angle. The side opposite the right angle is called the hypotenuse, and the other two sides are known as base and height.
Our Right Triangle Calculator helps you quickly calculate missing sides, area, and other measurements with accurate results.
How to Use the Right Triangle Calculator
Using our right angle triangle calculator is simple:
Enter any two known sides
Click calculate
Instantly get the missing side and area
The tool works smoothly on mobile and desktop devices.
Pythagorean Theorem Formula
The formula used for right triangles is:
a² + b² = c²
Where:
a and b are the shorter sides
c is the hypotenuse
Example:
If a = 3 and b = 4
c = 5
Our pythagorean theorem calculator gives instant and accurate answers.
How to Find Area of a Right Triangle
The formula for area is:
Area = (Base × Height) ÷ 2
Example:
Base = 6, Height = 8
Area = (6 × 8) ÷ 2 = 24
You can calculate this instantly using our calculator.
Why Use an Online Right Triangle Calculator?
✔ Saves time
✔ Reduces manual calculation errors
✔ Ideal for students and teachers
✔ Helpful in construction and engineering
✔ Free and easy to use
Examples of Right Triangle Calculations
Sides: 5 and 12 → Hypotenuse = 13
Sides: 8 and 15 → Hypotenuse = 17
Base = 10, Height = 5 → Area = 25
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Frequently Asked Questions (FAQs)
Q1: Is this right triangle calculator free?
Yes, it is completely free.
Q2: Does it use the Pythagorean theorem?
Yes, it uses the standard a² + b² = c² formula.
Q3: Can I calculate area as well?
Yes, it provides area calculations.
Q4: Does it work on mobile devices?
Yes, it works on all devices.