Radioactivity
pCitoµCi
Convert picocuries (pCi) to microcuries (µCi).
Factor1 pCi = 1e-6 µCi
Converter
pCi
Accepts numbers or expressions, e.g. 150 + 14.7
Result
µCi
Rendered to 6 significant figures.
Formula
Formula
µCi = pCi × 1e-6
Multiply any value in picocuries by 1e-6 to obtain the value in microcuries.
Worked example
Convert 1.00000e+6 pCi to µCi.
- 01Start with 1.00000e+6 pCi.
- 02Multiply by the conversion factor: 1.00000e+6 × 1e-6 = 1 µCi.
Result1.00000e+6 pCi = 1 µCi
Conversion table
| pCi | µCi |
|---|---|
| 1 | 1e-6 |
| 2 | 2e-6 |
| 5 | 5e-6 |
| 10 | 1e-5 |
| 20 | 2e-5 |
| 50 | 5e-5 |
| 100 | 1e-4 |
| 200 | 0.0002 |
| 500 | 0.0005 |
| 1000 | 0.001 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from pCi to µCi?
1 pCi equals 1e-6 µCi. To convert, multiply the value in picocuries by 1e-6.
How do I convert 1 pCi to µCi?
1 pCi = 1e-6 µCi. For any value, multiply by 1e-6.
How do I convert µCi back to pCi?
Divide by the same factor — or equivalently, multiply by 1000000. So 1 µCi = 1.00000e+6 pCi.
When would I need to convert picocurie to microcurie?
Radioactivity (activity) conversions between pCi and µCi are routine in health physics, nuclear medicine ordering, environmental monitoring, radiopharmacy and reactor/accelerator-source documentation. The becquerel (Bq) is the SI unit; the curie (Ci) is the legacy unit (1 Ci ≡ 3.7×10¹⁰ Bq exactly). This category is strictly activity (decays per second) — it does NOT cover absorbed dose (Gy, rad), dose equivalent (Sv, rem), exposure or dose rate, all of which are different physical quantities and live in separate categories.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).