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)
About This Calculator
This triangle area calculator helps you move from raw inputs to a decision-ready output in seconds.
Calculate the area of any triangle using base and height with instant validation for planning, education, and geometry workflows.
If your workflow expands, pair this calculator with Pythagorean Theorem Calculator and Circle Sector Area Calculator to cross-check assumptions and build a stronger analysis chain.
Formula
A = 1/2 × b × h
Example Calculation
The worked example below demonstrates how the input fields translate into the final output. Use it as a quick validation pass before entering your own numbers.
- base: 6
- height: 8
Explanation of Results
Result Interpretation
The area of the triangle is 24 square units. A triangle with base 6 and height 8 covers 24 units² of surface area.
FAQ
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.
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See Also
Other calculators in Geometry