Convert Disintegrations per minute per cubic metre to Becquerels per cubic metre
Convert Disintegrations per minute per cubic metre (dpm/m³) to Becquerels per cubic metre (Bq/m³) instantly and accurately.
Conversion Formula
Bq/m³ = dpm/m³ × 0.01666666667
About Disintegrations per minute per cubic metre
The disintegration per minute per cubic metre (dpm/m³) equals exactly 1/60 Bq/m³ ≈ 16.7 mBq/m³. Used in legacy US nuclear industry and older radiochemistry literature for low-level airborne radioactivity; some historical derived air concentration (DAC) limit publications cite values in dpm/m³. 1 dpm/m³ = 1/60 Bq/m³ ≈ 16.7 mBq/m³.
About Becquerels per cubic metre
The becquerel per cubic metre (Bq/m³) is the SI derived unit of activity concentration. The WHO indoor radon reference level is 100 Bq/m³; EU Directive 2013/59/Euratom sets 300 Bq/m³ for residential radon in dwellings; normal outdoor ²²²Rn averages 5-15 Bq/m³ globally. 1 Bq/m³ = 1 s⁻¹ m⁻³.
Quick Reference Table
| Disintegrations per minute per cubic metre (dpm/m³) | Becquerels per cubic metre (Bq/m³) |
|---|---|
| 1 dpm/m³ | 0.0166667 Bq/m³ |
| 2 dpm/m³ | 0.0333333 Bq/m³ |
| 5 dpm/m³ | 0.0833333 Bq/m³ |
| 10 dpm/m³ | 0.166667 Bq/m³ |
| 25 dpm/m³ | 0.416667 Bq/m³ |
| 50 dpm/m³ | 0.833333 Bq/m³ |
| 100 dpm/m³ | 1.66667 Bq/m³ |