Mathematics & calculation

Area of a Triangle Calculator (Base, 3 Sides or Angle)

Calculate the area of any triangle from the data you have: base × height ÷ 2, three sides with Heron's formula, or two sides and the included angle (½ab sin C). Formulas explained, worked examples (gable wall, plot of land) and units of your choice.

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<div
  class="bethemesh-widget"
  data-tool="triangle-area-calculator"
  data-lang="en"
  data-theme="auto"
  data-min-height="360"
  data-max-height="760"
  data-sandbox="allow-scripts allow-same-origin"
  data-allow="clipboard-write"
></div>
<script src="https://bethemesh.com/widgets/v1/bethemesh.js" async></script>
<p style="margin:6px 0 0;font:12px/1.4 system-ui,sans-serif">Free tool by <a href="https://bethemesh.com/en/tools/triangle-area-calculator">Bethemesh</a></p>

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Area of a Triangle Calculator (Base, 3 Sides or Angle)

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