Mathematics & calculation

Area of a Circle Calculator

Calculate the area of a circle, meaning the surface enclosed by it, from its radius, diameter or circumference. The formulas A = πr², A = πd²/4 and A = C²/4π are explained with worked examples, and the result is shown in cm², m², in² or ft².

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<div
  class="bethemesh-widget"
  data-tool="circle-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/circle-area-calculator">Bethemesh</a></p>

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Area of a Circle Calculator

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