Becquerel (Bq)
The becquerel (Bq) is the SI unit of radioactivity — one nuclear disintegration per second.
Becquerels quantify source strength in nuclear medicine, environmental monitoring, and regulatory labeling worldwide.
Becquerel to Curie
Convert becquerel to curie instantly. Type in either field — results update live.
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radiation-activity Becquerel Curie
1 becquerel = 0.00000000002702702703 curies
Unit
Unit
Conversion table
Selected Bq values converted to Ci using the exact factor from this tool.
| Bq | Ci |
|---|---|
| 0.01 | 0.00000000000027027027 |
| 0.1 | 0.0000000000027027027 |
| 1 | 0.00000000002702702703 |
| 2 | 0.00000000005405405405 |
| 3 | 0.00000000008108108108 |
| 5 | 0.00000000013513513514 |
| 10 | 0.00000000027027027027 |
| 20 | 0.00000000054054054054 |
| 50 | 0.0000000013513513514 |
| 100 | 0.0000000027027027027 |
| 1,000 | 0.000000027027027027 |
How to convert
Exact conversion factors in both directions, plus a worked example.
1 Bq = 2.702702703e-11 Ci
1 Ci = 3.7e+10 Bq
To convert becquerel to curie, multiply by 2.702702703e-11.
To convert curie to becquerel, multiply by 3.7e+10.
Example: convert 10 Bq to Ci
10 × 2.702702703e-11 = 2.702702703e-10 Ci
About these units
Short background on the units used in this conversion.
Curie (Ci)
The curie (Ci) equals 3.7×10¹⁰ becquerels — historically defined from the activity of 1 gram of radium-226.
Curies label radioisotope source strength in nuclear medicine, industrial gauges, and legacy specifications — the most searched activity conversion.
Frequently asked questions
How many curies are in one becquerel?
One becquerel equals 0.00000000002702702703 curies. Multiply your becquerels value by 0.00000000002702702703 to convert to curies.
What is the conversion formula?
Ci = Bq × 0.00000000002702702703The reverse is
Bq = Ci × 37,000,000,000, using the same exact factors as this converter.Is this Becquerel to Curie converter private?
Yes. All calculations run locally in your browser. Nothing you type is sent to a server.