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Results / what your number means

Understand your radon result with clear next steps.

A radon number is a measurement. The goal is to compare the result with the Canadian guideline and decide whether testing, monitoring, or mitigation should be discussed.

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Result checker

Check what your radon number may mean.

Enter a radon result to compare it with Health Canada’s Canadian guideline of 200 Bq/m³ and get plain-language next steps.

  • 1 pCi/L is approximately 37 Bq/m³.
  • 200 Bq/m³ is approximately 5.4 pCi/L.
  • Results below 200 Bq/m³ are below the Canadian guideline, but no level is considered completely risk-free.
  • Higher results should be reviewed and reduced as low as practicable.
  • Short-term, consumer monitor, or unknown test results are useful screening information, but may not be the final basis for major decisions.

This tool provides general information only and does not replace professional radon testing, mitigation assessment, medical advice, official guidance, or a site-specific evaluation. Testing conditions, device type, placement, and duration can affect interpretation. See the Terms & Disclaimer.

Canadian guideline

200 Bq/m³ is the key reference point.

Canada’s indoor radon guideline is 200 becquerels per cubic metre, written as 200 Bq/m³. If a long-term test result is above that guideline, mitigation is generally recommended.

Results below the guideline can still be discussed in context, especially if the property owner wants to understand seasonal changes, test length, or future monitoring.

What helps

Share the details behind the number.

  • The radon result and unit of measurement.
  • Test duration and where the device was placed.
  • Property type, age, and lower-level use.
  • Whether the question is for a home, sale, rental, or build.

Clear next steps

Not every result leads to the same conversation.

Result review helps point the conversation in the right direction without making assumptions about the property.

Below the guideline

Discuss test conditions, timing, and whether future monitoring makes sense for the property owner.

Above the guideline

Review mitigation as a practical next step and gather property details for a quote request.

Unclear result

Confirm the test length, placement, and units before deciding whether another test is needed.

Contact / booking

Want help reading your result?

Send the number, test length, and property location through the contact form.

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