Radon Conversion Guide
Radon Basics
Radon is a natural radioactive gas. It can enter rooms through soil gaps. Reports may show picocuries per liter. Some labs use becquerels per cubic meter. This calculator connects both systems. It also keeps the numbers readable.
Why Picocuries Matter
A picocurie is a tiny activity unit. It describes radioactive decay rate. In radon reports, pCi/L means picocuries in each liter of air. The common conversion is simple. One pCi/L equals thirty seven Bq/m³. That makes the tool useful for home reports, inspection notes, and remediation reviews.
Reading the Result
Start with the unit on your test report. Enter the measured activity. Select the target unit you need. The calculator converts the value into all supported units. It also estimates a time weighted level. That estimate uses hours per day and days per year. It does not replace a lab report. It gives planning context.
Risk Context
Radon risk increases as concentration and exposure time rise. A result below two pCi/L is usually a lower concern. A result from two to under four deserves follow up. A result at four pCi/L or more needs careful action planning. Higher readings should be checked quickly. Retesting is often wise.
Better Data Practices
Use long term testing when possible. Short tests are helpful for screening. Place detectors away from drafts. Avoid windows, vents, and high humidity. Record the test period clearly. Keep the original report with your converted result. This prevents confusion when units differ between agencies.
Using Exports
The CSV option saves the main numbers. It is helpful for spreadsheets. The PDF option creates a simple summary. It is useful for clients, tenants, buyers, or maintenance teams. The chart compares your result with reference levels. Use it to explain the reading in a clear way.
When to Recheck
A single reading is only one snapshot. Weather, season, building pressure, and closed windows can change radon levels. Recheck after repairs, sealing work, or fan installation. Test again after major renovation. Compare results using the same unit where possible. This keeps trends easier to review and share. Store dates, locations, and detector types with every converted value for reliable future comparisons.