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Point-Source Intensity Calculator

Compute sound intensity I = W / (4πr²) from acoustic power and distance.

Input Data

Input Sound power W.
W
Input Distance r.
m

Results

0.079577W/m²
I = W / (4πr²).

At a glance:Point-Source Intensity Calculator: enter parameters to compute results; complements related calculators.

Formula

I = W / (4πr²).

How to Use

  1. Enter sound power (W) and distance (m).
  2. It returns intensity (W/m²).

Case Studies

W=1 W, r=1 m → I≈0.0796 W/m²

I = 1/(4π) ≈ 0.07958 W/m².

FAQ

Why divide by 4πr²?

A point source spreads uniformly over a sphere of area 4πr².

Related Tools

References

Content review: Calculatorism Science Team. Formula and numeric tests verified; results for reference only.

Found a problem with the results?

If this calculator's result is wrong, or you have any question about the calculation logic, please let us know. You are viewing:Point-Source Intensity Calculator（/acoustics/point-source-intensity）。