Radon Dose Tool

This tool shows your estimated radon dose based on your home’s radon level and time spent in the home.

Radon level

Radon level (pCi/L)

Auto‑loaded from your Kingpin score when available.

Where is this level measured? Basement / lowest level used Main living level Bedroom level

Time in the home

Typical time at home Most of the day (≈16 hours/day) Evenings and nights (≈12 hours/day) Nights only (≈8 hours/day) Let me enter my own hours

Hours per day at this level

Young children or work‑from‑home on this level? No Yes, often on this level

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Estimated annual dose

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10‑year cumulative dose

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Context band

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Print and save this dose report.

Radiation Dose Report

1. Your Home’s Radon Level

– pCi/L

Your radon level determines how much long‑term exposure your lungs receive. The dose estimates below are based on this level and your time in the home, and they help you understand the scale of that exposure so you can make a confident, informed decision.

2. Estimated Annual Dose

– mSv/year

This is the estimated amount of radiation your lungs receive from radon and its decay products over a typical year of living in this home.

3. Cumulative Dose Over Time

5 years: – mSv
10 years: – mSv
20 years: – mSv

Radon risk comes from long‑term exposure. The longer the exposure, the more opportunities for small cellular effects to accumulate.

4. Comparison to Familiar Exposures

Your annual radon dose is roughly similar to:

• Natural background radiation in some higher‑elevation U.S. cities
• A few routine medical imaging procedures spread across a year
• Everyday environmental radiation from soil, building materials, and cosmic rays

These comparisons are not meant to minimize radon — they simply help you understand the magnitude of the exposure.

5. What Actually Accumulates

Radon gas does not build up in your body. Radiation itself does not accumulate.

What accumulates over time is:

• Small DNA effects caused by alpha particles
• Occasional misrepairs that leave behind tiny errors
• Long‑term cellular changes that can add up over decades

Reducing radon reduces how many of these “damage events” occur each year.

6. How to Use This Dose Information

These dose estimates are based on your home’s current radon level and your time in the home. They do not replace the recommendation based on your radon level and your home and personal circumstances, but they add context that may help you think through your options and decide what feels right for you.

Many homeowners use this dose context to decide whether to mitigate now or monitor and reassess later, considering cost, timing, and how long they expect to remain in the home.

7. Context Band and Interpretation

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Prepared by Radon Navigator™
www.radonnavigator.org