Convert Disintegrations per minute per cubic metre to Microcuries per cubic metre
Convert Disintegrations per minute per cubic metre (dpm/m³) to Microcuries per cubic metre (µCi/m³) instantly and accurately.
Conversion Formula
µCi/m³ = dpm/m³ × 4.504504505e-7
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 Microcuries per cubic metre
The microcurie per cubic metre (µCi/m³) equals 3.7 × 10⁴ Bq/m³ = 37 kBq/m³. Used in US occupational radiation protection; NRC 10 CFR Part 20 DAC values for moderately radiotoxic nuclides are in the µCi/m³ range; air activity inside nuclear plant buildings after small sealed source incidents is assessed in µCi/m³. 1 µCi/m³ = 3.7 × 10⁴ Bq/m³.
Quick Reference Table
| Disintegrations per minute per cubic metre (dpm/m³) | Microcuries per cubic metre (µCi/m³) |
|---|---|
| 1 dpm/m³ | 4.505 × 10-7 µCi/m³ |
| 2 dpm/m³ | 9.009 × 10-7 µCi/m³ |
| 5 dpm/m³ | 2.252 × 10-6 µCi/m³ |
| 10 dpm/m³ | 4.505 × 10-6 µCi/m³ |
| 25 dpm/m³ | 1.126 × 10-5 µCi/m³ |
| 50 dpm/m³ | 2.252 × 10-5 µCi/m³ |
| 100 dpm/m³ | 4.505 × 10-5 µCi/m³ |