Picocurie (pCi)
A picocurie is 10⁻¹² curie, 0.037 becquerel. US radon levels are given in pCi/L, with an action level of 4 pCi/L (148 Bq/m³).
Symbol: pCi
Quantity: activity of a radioactive source
SI relation: 1 pCi = 0.037 Bq (exact)
Derivation: 1 pCi = 0.037 Bq.
Exact: yes, by definition
Typical uses
- Radon in homes (pCi/L)
- Drinking water radioactivity (pCi/L)
Convert picocuries to other units
| Conversion | 1 pCi equals | Reverse |
|---|---|---|
| picocurie to becquerel | 0.037 Bq | becquerel to picocurie |
| picocurie to curie | 1 × 10⁻¹² Ci | curie to picocurie |
| picocurie to megabecquerel | 3.7 × 10⁻⁸ MBq | megabecquerel to picocurie |
| picocurie to millicurie | 1 × 10⁻⁹ mCi | millicurie to picocurie |
| picocurie to kilobecquerel | 0.000037 kBq | kilobecquerel to picocurie |
| picocurie to gigabecquerel | 3.7 × 10⁻¹¹ GBq | gigabecquerel to picocurie |
| picocurie to microcurie | 0.000001 µCi | microcurie to picocurie |
| picocurie to disintegration per minute | 2.22 dpm | disintegration per minute to picocurie |
| picocurie to terabecquerel | 3.7 × 10⁻¹⁴ TBq | terabecquerel to picocurie |
| picocurie to nanocurie | 0.001 nCi | nanocurie to picocurie |
| picocurie to rutherford | 3.7 × 10⁻⁸ Rd | rutherford to picocurie |
Open the Radioactivity Converter to convert any value between all units.
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "curie".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Picocurie (pCi). Retrieved October 25, 2026, from https://scientificconverters.com/units/picocurie/
IEEE
Scientific Converters, "Picocurie (pCi)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/units/picocurie/