Convert Millicuries to Nanocuries (mCi to nCi)
1 millicurie (mCi) = 1000000 nanocuries (nCi). 1 nCi = 0.000001 mCi. Example: 15 mCi = 15 × 1000000 = 15000000 nCi.
Also searched as millicuries to nCi, millicuries in nCi, millicuries into nanocuries, mCi to nCi, mCi in nanocuries, mCi into nanocurie, millicurie to nanocurie, mCi to nanocuries converter and how many nanocuries in a millicurie.
1 mCi = 1000000 nCi
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk millicurie to nanocurie converter to paste a column from Excel.
How to Convert Millicurie to Nanocurie
- 1 mCi = 1000000 nCi
- 1 nCi = 0.000001 mCi
- Example: convert 15 mCi to nCi: 15 mCi = 15 × 1000000 nCi = 15000000 nCi
Formula
nCi = mCi × 1000000
Derivation from SI units:
- 1 mCi = 3.7 × 10⁷ Bq = 37 MBq.
- 1 nCi = 37 Bq.
- 1 mCi = 37000000 Bq ÷ 37 Bq per nCi = 1000000 nCi
Both units are defined exactly, so the factor is exact. Millicurie definition: millicurie; Nanocurie definition: nanocurie.
Worked examples
- A reading of 15 mCi converts to 15000000 nCi.
15 mCi × 1000000 = 15000000 nCi - A value of 30 mCi is 30000000 nCi.
30 mCi × 1000000 = 30000000 nCi
Millicurie to Nanocurie conversion table
| Millicuries (mCi) | Nanocuries (nCi) |
|---|---|
| 1 mCi | 1000000 nCi |
| 5 mCi | 5000000 nCi |
| 10 mCi | 10000000 nCi |
| 15 mCi | 15000000 nCi |
| 20 mCi | 20000000 nCi |
| 25 mCi | 25000000 nCi |
| 30 mCi | 30000000 nCi |
| 50 mCi | 50000000 nCi |
| 100 mCi | 100000000 nCi |
| 200 mCi | 200000000 nCi |
Where it's used
Millicuries are used for US radiopharmaceutical doses (e.g. 10 mCi FDG), while nanocuries appear in environmental sample activities. Both measure activity of a radioactive source, so the conversion is a fixed factor.
Millicurie to other radioactivity units
| Conversion | 1 mCi equals |
|---|---|
| millicurie to nanocurie | 1000000 nCi |
| millicurie to becquerel | 37000000 Bq |
| millicurie to curie | 0.001 Ci |
| millicurie to megabecquerel | 37 MBq |
| millicurie to picocurie | 1000000000 pCi |
| millicurie to kilobecquerel | 37000 kBq |
| millicurie to gigabecquerel | 0.037 GBq |
| millicurie to microcurie | 1000 µCi |
Show 3 more units
| millicurie to disintegration per minute | 2220000000 dpm |
|---|---|
| millicurie to terabecquerel | 0.000037 TBq |
| millicurie to rutherford | 37 Rd |
Frequently asked questions
How many nanocuries are in 1 millicurie?
1 mCi = 1000000 nCi.
How do I convert millicuries to nanocuries?
Multiply the value in mCi by 1000000. For example, 15 mCi × 1000000 = 15000000 nCi.
Is the mCi to nCi conversion exact?
Yes. Both units are defined exactly, and 1 mCi is exactly 1000000 nCi.
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 Millicuries to Nanocuries (mCi to nCi). Retrieved October 25, 2026, from https://scientificconverters.com/radioactivity/millicuries-to-nanocuries/
IEEE
Scientific Converters, "Convert Millicuries to Nanocuries (mCi to nCi)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/radioactivity/millicuries-to-nanocuries/