Triangles
Explore triangles tools with formulas, input guidance and worked examples.
Pythagorean theorem calculator
Find the hypotenuse of a right triangle from the lengths of its two perpendicular sides.
Open toolTriangle Calculator
What are the area and angles of a triangle when I know its three sides? Enter the values below to calculate the result.
Open toolTriangle Angle Calculator
What is the missing third angle of a triangle? Enter the values below to calculate the result.
Open toolRight Triangle Calculator
How long is the hypotenuse, and what are the angles, given the two legs? Enter the values below to calculate the result.
Open toolTriangle Side Calculator
How long is the missing side when I know two sides and their included angle? Enter the values below to calculate the result.
Open toolEquilateral Triangle Calculator
What are the area, height and perimeter of an equilateral triangle? Enter the values below to calculate the result.
Open toolIsosceles Triangle Calculator
What are the height and area of an isosceles triangle from its base and equal side? Enter the values below to calculate the result.
Open tool