Inverse‑Square Law (dose rate vs distance)
Estimate the dose rate at a new distance from a point‑like source. No shielding or attenuation is included.
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Put the actual reading and unit (e.g. 10 mSv/h at 1 m).
Distance from source to detector when you took the reading.
New distance from the source.
Just the display unit — it doesn’t change the calculation.
Your result will appear here.
What’s happening under the hood?
We use the inverse‑square relation for point sources:
D₂ = D₁ × (r₁ / r₂)².
Useful when the source is small compared to the distances and there’s no significant shielding or scatter change.