Radioactivity
nCitoµCi
Convert nanocuries (nCi) to microcuries (µCi).
Factor1 nCi = 0.001 µCi
Converter
nCi
Accepts numbers or expressions, e.g. 150 + 14.7
Result
µCi
Rendered to 6 significant figures.
Formula
Formula
µCi = nCi × 0.001
Multiply any value in nanocuries by 0.001 to obtain the value in microcuries.
Worked example
Convert 1000 nCi to µCi.
- 01Start with 1000 nCi.
- 02Multiply by the conversion factor: 1000 × 0.001 = 1 µCi.
Result1000 nCi = 1 µCi
Conversion table
| nCi | µCi |
|---|---|
| 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 nCi to µCi?
1 nCi equals 0.001 µCi. To convert, multiply the value in nanocuries by 0.001.
How do I convert 1 nCi to µCi?
1 nCi = 0.001 µCi. For any value, multiply by 0.001.
How do I convert µCi back to nCi?
Divide by the same factor — or equivalently, multiply by 1000. So 1 µCi = 1000 nCi.
When would I need to convert nanocurie to microcurie?
Radioactivity (activity) conversions between nCi 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).