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Triangle Calculator

A triangle is a polygon with three sides and three angles. All of the interior angles add up to 180 degrees. Here you can calculate the area and perimeter of Triangle.

Triangle Calculator

Area of triangle: l×b/2

  • Enter the length and breadth =

  • Area of a triangle =

Perimeter of Triangle:(a + b + c)

  • Enter the length and breadth =

  • Perimeter of a triangle =

Area of Equilateral Triangle: (Sqrt(3)/4)×(side)²

  • Enter the length =

  • Area of a equilateral triangle=

Area of Triangle SAS(2sides & opposite angle):½×a×b×SinC

  • Enter the length and breadth =

  • Angle =

  • Area of a triangle SAS=

This tool is an online utility. You can dynamically calculate the area and perimeter of Triangle, area of Equilateral and SAS Triangle.