Convert Picocuries to Becquerels (pCi to Bq)
1 picocurie (pCi) = 0.037 becquerels (Bq). 1 Bq = 27.02702703 pCi. Example: 4 pCi = 4 × 0.037 = 0.148 Bq.
Also searched as pCi to Bq, pCi/L to Bq/m3, picocuries to becquerels and radon pCi/L to Bq/m³.
1 pCi = 0.037 Bq
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk picocurie to becquerel converter to paste a column from Excel.
How to Convert Picocurie to Becquerel
- 1 pCi = 0.037 Bq
- 1 Bq = 27.02702703 pCi
- Example: convert 4 pCi to Bq: 4 pCi = 4 × 0.037 Bq = 0.148 Bq
Formula
Bq = pCi × 0.037
or Bq = pCi ÷ 27.02702702703
Derivation from SI units:
- 1 pCi = 0.037 Bq.
- 1 Bq = 1 decay per second (s⁻¹).
Both units are defined exactly, so the factor is exact. Picocurie definition: picocurie; Becquerel definition: becquerel.
Worked examples
- The US radon action level of 4 pCi per litre is 0.148 Bq per litre.
4 pCi × 0.037 = 0.148 Bq - 1 pCi is 0.037 Bq.
1 pCi × 0.037 = 0.037 Bq
Picocurie to Becquerel conversion table
| Picocuries (pCi) | Becquerels (Bq) |
|---|---|
| 0.4 pCi | 0.0148 Bq |
| 1 pCi | 0.037 Bq |
| 2 pCi | 0.074 Bq |
| 4 pCi | 0.148 Bq |
| 8 pCi | 0.296 Bq |
| 10 pCi | 0.37 Bq |
| 20 pCi | 0.74 Bq |
| 50 pCi | 1.85 Bq |
| 100 pCi | 3.7 Bq |
| 1000 pCi | 37 Bq |
Where it's used
Radon and drinking-water activities in picocuries (per litre) from US tests are converted to becquerels for comparison with WHO and EU limits. Multiply by 0.037.
Picocurie to other radioactivity units
| Conversion | 1 pCi equals |
|---|---|
| picocurie to becquerel | 0.037 Bq |
| picocurie to curie | 1 × 10⁻¹² Ci |
| picocurie to megabecquerel | 3.7 × 10⁻⁸ MBq |
| picocurie to millicurie | 1 × 10⁻⁹ mCi |
| picocurie to kilobecquerel | 0.000037 kBq |
| picocurie to gigabecquerel | 3.7 × 10⁻¹¹ GBq |
| picocurie to microcurie | 0.000001 µCi |
| picocurie to disintegration per minute | 2.22 dpm |
Show 3 more units
| picocurie to terabecquerel | 3.7 × 10⁻¹⁴ TBq |
|---|---|
| picocurie to nanocurie | 0.001 nCi |
| picocurie to rutherford | 3.7 × 10⁻⁸ Rd |
Frequently asked questions
How do I compare US and European radon levels?
Multiply pCi/L by 37 to get Bq/m³: 4 pCi/L is 148 Bq/m³, while the WHO reference level is 100 Bq/m³.
How many becquerels are in 1 picocurie?
1 pCi = 0.037 Bq.
How do I convert picocuries to becquerels?
Multiply the value in pCi by 0.037, or divide it by 27.02702703. For example, 4 pCi × 0.037 = 0.148 Bq.
Is the pCi to Bq conversion exact?
Yes. Both units are defined exactly, and 1 pCi is exactly 0.037 Bq.
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".
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4 (becquerel, gray, sievert, lux) and Table 2 (candela).
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). Convert Picocuries to Becquerels (pCi to Bq). Retrieved October 25, 2026, from https://scientificconverters.com/radioactivity/picocuries-to-becquerels/
IEEE
Scientific Converters, "Convert Picocuries to Becquerels (pCi to Bq)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/radioactivity/picocuries-to-becquerels/