This triangle calculator calculates the area of a triangle and its perimeter no matter of its type by taking account of the sides and/or angles you know. There is in more information about the formulas applied below the form.

Angle A:
Angle B:
Angle C:
Side a:
Side b:
Side c:

How does this perimeter and area of a triangle calculator work?

Independent of the triangle shape (right, equilateral or isosceles), this calculator can help you determine its area and perimeter if you provide any 3 out of the 6 field as a combination between sides and angles. You can input the angles in degrees or radians.

The formulas behind this triangle calculator are:

  • Area of a triangle estimated by Heron's formula:

Area of a triangle Heron formula

  • Triangle perimeter formula:

Triangle perimeter formula

13 Apr, 2015