Right Triangle Calculator
Enter any two values to calculate all properties of a right triangle. Get instant results with visual diagram.
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Input Values
Enter any two values (at least one side):
Results
Side a (Opposite)
-
units
Side b (Adjacent)
-
units
Side c (Hypotenuse)
-
units
Angle A
-
degrees
Angle B
-
degrees
Area
-
sq units
About Right Triangles
A right triangle (or right-angled triangle) has one angle that measures exactly 90 degrees. The side opposite the right angle is called the hypotenuse, and it's always the longest side.
Key formulas used in this calculator:
• Pythagorean Theorem: a² + b² = c²
• Trigonometric ratios: sin(A) = a/c, cos(A) = b/c, tan(A) = a/b
• Area = (a × b) / 2
• Perimeter = a + b + c