Radioactivity
pCitonCi
Convert picocuries (pCi) to nanocuries (nCi).
Factor1 pCi = 0.001 nCi
Converter
pCi
Accepts numbers or expressions, e.g. 150 + 14.7
Result
nCi
Rendered to 6 significant figures.
Formula
Formula
nCi = pCi × 0.001
Multiply any value in picocuries by 0.001 to obtain the value in nanocuries.
Worked example
Convert 1000 pCi to nCi.
- 01Start with 1000 pCi.
- 02Multiply by the conversion factor: 1000 × 0.001 = 1 nCi.
Result1000 pCi = 1 nCi
Conversion table
| pCi | nCi |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 5 | 0.005 |
| 10 | 0.01 |
| 20 | 0.02 |
| 50 | 0.05 |
| 100 | 0.1 |
| 200 | 0.2 |
| 500 | 0.5 |
| 1000 | 1 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from pCi to nCi?
1 pCi equals 0.001 nCi. To convert, multiply the value in picocuries by 0.001.
How do I convert 1 pCi to nCi?
1 pCi = 0.001 nCi. For any value, multiply by 0.001.
How do I convert nCi back to pCi?
Divide by the same factor — or equivalently, multiply by 1000. So 1 nCi = 1000 pCi.
When would I need to convert picocurie to nanocurie?
Radioactivity (activity) conversions between pCi and nCi 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).