Formula
Ci to Bq conversion formula
Use this relationship for a direct conversion:
Bq = Ci x 37,000,000,000
Worked example
2 Ci = 74,000,000,000 Bq.
The curie is exactly 3.7 x 10^10 becquerels by definition.
Radioactive Activity conversion
Convert Curie to Becquerel
1 curie (Ci) equals 37,000,000,000 becquerel (Bq). Enter any value below to convert from Ci to Bq.
Enter a value and choose units. Results update instantly.
1 Ci = 37,000,000,000 Bq
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 |
Recent conversions
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Quick reference
Curie to Becquerel table
| Curie (Ci) | Becquerel (Bq) |
|---|---|
| 0.01 | 370,000,000 |
| 0.1 | 3,700,000,000 |
| 1 | 37,000,000,000 |
| 2 | 74,000,000,000 |
| 5 | 185,000,000,000 |
| 10 | 370,000,000,000 |
| 25 | 925,000,000,000 |
| 50 | 1.85e12 |
| 100 | 3.7e12 |
| 1,000 | 3.7e13 |
From unit
About the curie
Exactly 37 billion becquerels.
Symbol: Ci
To unit
About the becquerel
One nuclear transformation per second.
Symbol: Bq
Keep converting
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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 Bq FAQ
How do you convert curie to becquerel?
Use the formula Bq = Ci x 37,000,000,000. 1 curie (Ci) equals 37,000,000,000 becquerel (Bq).
Is the Ci to Bq conversion exact?
Both unit definitions use exact factors. Only the displayed decimal may be rounded.