Triangle Area Calculator
Find a triangle's area from its base and height.
Result
Area
30.0000
How it works
Area = (base × height) ÷ 2
Enter the base and the perpendicular height. The area is half their product. Example: base 10, height 6 → area 30.
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Frequently asked questions
What is the area formula for a triangle?
Area = (base × height) ÷ 2.
Which height do I use?
The perpendicular height from the base to the opposite vertex — not a slanted side.
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