Formula
Ci to mCi conversion formula
Use this relationship for a direct conversion:
mCi = Ci x 1,000
Worked example
2 Ci = 2,000 mCi.
The curie is exactly 3.7 x 10^10 becquerels by definition.
Radioactive Activity conversion
Convert Curie to Millicurie
1 curie (Ci) equals 1,000 millicurie (mCi). Enter any value below to convert from Ci to mCi.
Enter a value and choose units. Results update instantly.
1 Ci = 1,000 mCi
All Activity units
From 1 Ci| Unit | Value |
|---|---|
| Becquerel Bq | 37,000,000,000 |
| Kilobecquerel kBq | 37,000,000 |
| Megabecquerel MBq | 37,000 |
| Gigabecquerel GBq | 37 |
| Microcurie μCi | 1,000,000 |
| Millicurie mCi | 1,000 |
| Curie Ci | 1 |
| Rutherford Rd | 37,000 |
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Quick reference
Curie to Millicurie table
| Curie (Ci) | Millicurie (mCi) |
|---|---|
| 0.01 | 10 |
| 0.1 | 100 |
| 1 | 1,000 |
| 2 | 2,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 25 | 25,000 |
| 50 | 50,000 |
| 100 | 100,000 |
| 1,000 | 1,000,000 |
From unit
About the curie
Exactly 37 billion becquerels.
Symbol: Ci
To unit
About the millicurie
One thousandth of a curie.
Symbol: mCi
Keep converting
Related conversions
Source
Conversion standard
Definitions are checked against BIPM SI Brochure: becquerel. Calculations use full internal precision before display rounding.
View the complete radioactive activity converterQuestions
Ci to mCi FAQ
How do you convert curie to millicurie?
Use the formula mCi = Ci x 1,000. 1 curie (Ci) equals 1,000 millicurie (mCi).
Is the Ci to mCi conversion exact?
Both unit definitions use exact factors. Only the displayed decimal may be rounded.