How to use this calculator
Two positive perpendicular leg lengths determine a right triangle.
The method
c = √(a²+b²); Area = ab/2
Enter your values in the labeled fields and choose Calculate. The result panel shows the answer and supporting values when useful.
WORKED EXAMPLE INPUT
Leg a: 3, Leg b: 4
Select Calculate to evaluate these example values.
Scope and limitations
Both legs should be positive. Angles are returned in degrees.
Common questions
Can I use different units?
Use consistent units unless this page is a unit converter. The result follows the units implied by the inputs.
Are results exact?
Displayed values may be rounded. Keep extra precision for important follow-up calculations.
Methods & verification
Formulas use standard mathematical definitions and fixed unit factors where applicable. See our methodology for numerical conventions, rounding, privacy, and limitations.