Mathematics & Statistics / Geometry
Triangle Area Calculator
Formulas
• Base & Height: A = ½ × b × h
• Heron's: A = √[s(s-a)(s-b)(s-c)] where s = (a+b+c)/2
• Two Sides & Angle: A = ½ × a × b × sin(C)
Calculate the area of any triangle using base and height with instant validation for planning, education, and geometry workflows.
Formula
A = 1/2 × b × h
Worked Example
base6
height8
Result: 24 square unitsThe area of the triangle is 24 square units. A triangle with base 6 and height 8 covers 24 units² of surface area.
Frequently Asked Questions
What formula is used for triangle area?
The calculator uses A = 1/2 × base × height, the standard formula for any triangle when base and perpendicular height are known.
Can this be used for scalene triangles?
Yes. The formula works for scalene, isosceles, and equilateral triangles as long as the entered height is perpendicular to the selected base.