Convert Nanocuries to Curies (nCi to Ci)
1 nanocurie (nCi) = 1 × 10⁻⁹ curies (Ci). 1 Ci = 1000000000 nCi. Example: 15 nCi = 15 × 1 × 10⁻⁹ = 1.5 × 10⁻⁸ Ci.
Also searched as nanocuries to Ci, nanocuries in Ci, nanocuries into curies, nCi to Ci, nCi in curies, nCi into curie, nanocurie to curie, nCi to curies converter and how many curies in a nanocurie.
1 nCi = 1e-9 Ci
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk nanocurie to curie converter to paste a column from Excel.
How to Convert Nanocurie to Curie
- 1 nCi = 1 × 10⁻⁹ Ci
- 1 Ci = 1000000000 nCi
- Example: convert 15 nCi to Ci: 15 nCi = 15 × 1 × 10⁻⁹ Ci = 1.5 × 10⁻⁸ Ci
Formula
Ci = nCi ÷ 1000000000
Derivation from SI units:
- 1 nCi = 37 Bq.
- 1 Ci = 3.7 × 10¹⁰ Bq exactly (originally the activity of 1 g of radium-226).
- 1 nCi = 37 Bq ÷ 37000000000 Bq per Ci = 1 × 10⁻⁹ Ci
Both units are defined exactly, so the factor is exact. Nanocurie definition: nanocurie; Curie definition: curie.
Worked examples
- A reading of 2 nCi converts to 2 × 10⁻⁹ Ci.
2 nCi × 1 × 10⁻⁹ = 2 × 10⁻⁹ Ci - A value of 20 nCi is 2 × 10⁻⁸ Ci.
20 nCi × 1 × 10⁻⁹ = 2 × 10⁻⁸ Ci
Nanocurie to Curie conversion table
| Nanocuries (nCi) | Curies (Ci) |
|---|---|
| 0.1 nCi | 1 × 10⁻¹⁰ Ci |
| 0.5 nCi | 5 × 10⁻¹⁰ Ci |
| 1 nCi | 1 × 10⁻⁹ Ci |
| 2 nCi | 2 × 10⁻⁹ Ci |
| 5 nCi | 5 × 10⁻⁹ Ci |
| 10 nCi | 1 × 10⁻⁸ Ci |
| 20 nCi | 2 × 10⁻⁸ Ci |
| 50 nCi | 5 × 10⁻⁸ Ci |
| 100 nCi | 1 × 10⁻⁷ Ci |
| 1000 nCi | 0.000001 Ci |
Where it's used
Nanocuries are used for environmental sample activities, while curies appear in US nuclear regulation and licences. Both measure activity of a radioactive source, so the conversion is a fixed factor.
Nanocurie to other radioactivity units
| Conversion | 1 nCi equals |
|---|---|
| nanocurie to curie | 1 × 10⁻⁹ Ci |
| nanocurie to becquerel | 37 Bq |
| nanocurie to megabecquerel | 0.000037 MBq |
| nanocurie to millicurie | 0.000001 mCi |
| nanocurie to picocurie | 1000 pCi |
| nanocurie to kilobecquerel | 0.037 kBq |
| nanocurie to gigabecquerel | 3.7 × 10⁻⁸ GBq |
| nanocurie to microcurie | 0.001 µCi |
Show 3 more units
| nanocurie to disintegration per minute | 2220 dpm |
|---|---|
| nanocurie to terabecquerel | 3.7 × 10⁻¹¹ TBq |
| nanocurie to rutherford | 0.000037 Rd |
Frequently asked questions
How many curies are in 1 nanocurie?
1 nCi = 1 × 10⁻⁹ Ci.
How do I convert nanocuries to curies?
Multiply the value in nCi by 1 × 10⁻⁹, or divide it by 1000000000. For example, 15 nCi × 1 × 10⁻⁹ = 1.5 × 10⁻⁸ Ci.
Is the nCi to Ci conversion exact?
Yes. Both units are defined exactly, and 1 nCi is exactly 1 × 10⁻⁹ Ci.
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). Convert Nanocuries to Curies (nCi to Ci). Retrieved October 25, 2026, from https://scientificconverters.com/radioactivity/nanocuries-to-curies/
IEEE
Scientific Converters, "Convert Nanocuries to Curies (nCi to Ci)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/radioactivity/nanocuries-to-curies/