Triangle Area Calculator
Triangle area calculator using base and height. Get the area from the half base times height formula, with each step of the working shown.
Formula
Area = ½ × base × height
Use it from the API
curl "https://moltcalc.com/api/calc/triangle-area?base=8&height=5"
See the API docs for every endpoint and the input schema.
FAQ
How do I find the area of a triangle?+
Multiply the base by the height and divide by 2: A = ½ × b × h. A triangle with base 8 and height 5 has an area of 20 square units.
Does the height have to be perpendicular to the base?+
Yes. The height is the perpendicular distance from the base to the opposite vertex, not the length of a slanted side. Using a side length instead of the true height gives the wrong area.
What if I only know the three side lengths?+
Then you need Heron's formula: compute the half perimeter s, and the area is the square root of s(s-a)(s-b)(s-c). This calculator uses the simpler base and height method.
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