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Annulus (Ring) Area

Calculate Annulus (Ring) Area instantly. Free online calculator with the exact formula, a worked example, and metric units. No signup required.

Annulus (Ring) Area

Outer radiusm
Inner radiusm
Annulus area
235.6194m²
π(R² − r²)Calculate Annulus (Ring) Area instantly. Free online calculator with the exact formula, a worked example, and metric units. No signup required.

More about: Annulus (Ring) Area

What it calculates

The “Annulus (Ring) Area” calculator computes Annulus area in m² from 2 parameters: outer radius (m), inner radius (m).

A core calculation for studying, engineering tasks, and checking solutions.

Example calculation

With parameters Outer radius = 10 m, Inner radius = 5 m the result is 235.62 m² (π(R² − r²)).

How to use

  1. Enter outer radius and inner radius — each field above is adjustable with a slider.
  2. Annulus area (m²) is calculated automatically as you type.
  3. Check the worked example below to see the formula applied to real numbers.
  4. Copy the result or bookmark this calculator.

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FAQ

How is Annulus (Ring) Area calculated?
The Annulus (Ring) Area calculator computes Annulus area (in m²) from outer radius, inner radius. Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the Annulus (Ring) Area calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.

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