Convert Nanocuries per cubic metre to Disintegrations per minute per cubic metre
Convert Nanocuries per cubic metre (nCi/m³) to Disintegrations per minute per cubic metre (dpm/m³) instantly and accurately.
Conversion Formula
dpm/m³ = nCi/m³ × 2220
About Nanocuries per cubic metre
The nanocurie per cubic metre (nCi/m³) equals 37 Bq/m³, identical to 1 picocurie per litre (pCi/L). The US EPA indoor radon action level is 4 pCi/L = 148 Bq/m³ ≈ 4 nCi/m³; NRC 10 CFR Part 20 DAC values for several radionuclides are expressed in the nCi/m³ range. 1 nCi/m³ = 37 Bq/m³ = 1 pCi/L.
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.
Quick Reference Table
| Nanocuries per cubic metre (nCi/m³) | Disintegrations per minute per cubic metre (dpm/m³) |
|---|---|
| 1 nCi/m³ | 2220 dpm/m³ |
| 2 nCi/m³ | 4440 dpm/m³ |
| 5 nCi/m³ | 11100 dpm/m³ |
| 10 nCi/m³ | 22200 dpm/m³ |
| 25 nCi/m³ | 55500 dpm/m³ |
| 50 nCi/m³ | 111000 dpm/m³ |
| 100 nCi/m³ | 222000 dpm/m³ |