Becquerels to Curies Converter Bq → Ci
1 becquerel (Bq) = 2.7027e-11 curies (Ci). Type a value below — the conversion happens instantly, entirely on your device.
1 Bq = 2.70270270e-11 Ci
1 becquerels = 2.7027027e-11 curies
1 × 2.70270e-11 = 2.7027027e-11
1 Bq equals 2.70270e-11 Ci, so multiplying by 2.70270e-11 converts the value. The result describes the exact same quantity — only the measuring stick changes.
How to convert becquerels to curies
curies = becquerels × 2.7027e-11 — multiply the becquerel value by 2.7027e-11.
Example: 10 Bq = 2.7027e-10 Ci.
To convert the other way: becquerels = curies ÷ 2.7027e-11 — or use the dedicated Ci to Bq converter .
Becquerels to Curies conversion table
| Becquerels (Bq) | Curies (Ci) |
|---|---|
| 0.1 | 2.7027e-12 |
| 0.25 | 6.7568e-12 |
| 0.5 | 1.3514e-11 |
| 1 | 2.7027e-11 |
| 2 | 5.4054e-11 |
| 3 | 8.1081e-11 |
| 4 | 1.0811e-10 |
| 5 | 1.3514e-10 |
| 6 | 1.6216e-10 |
| 7 | 1.8919e-10 |
| 8 | 2.1622e-10 |
| 9 | 2.4324e-10 |
| 10 | 2.7027e-10 |
| 15 | 4.0541e-10 |
| 20 | 5.4054e-10 |
| 25 | 6.7568e-10 |
| 30 | 8.1081e-10 |
| 40 | 0.000000001081 |
| 50 | 0.000000001351 |
| 75 | 0.000000002027 |
| 100 | 0.000000002703 |
| 250 | 0.000000006757 |
| 500 | 0.000000013514 |
| 1000 | 0.000000027027 |
About the units
What is a becquerel?
The SI unit of radioactivity — one nuclear decay (disintegration) per second. A very small unit: a banana is about 15 Bq, a human body around 4,000 Bq.
What is a curie?
The traditional unit, defined as exactly 3.7×10¹⁰ Bq — originally the activity of one gram of radium-226. Still common in the US and in older literature.
Frequently asked questions
How many curies are in 1 becquerel?
1 becquerel (Bq) = 2.7027e-11 curies (Ci).
What is the formula to convert becquerels to curies?
curies = becquerels × 2.7027e-11 — multiply the becquerel value by 2.7027e-11.
How do I convert Bq to Ci without a calculator?
Multiply by 2.7027e-11 for a close estimate. Exact factor: 1 Bq = 2.7027e-11 Ci.
Is this Bq-to-Ci converter accurate and private?
Yes. It uses the exact internationally defined conversion factors and computes results locally in your browser — your input is never sent to a server, and the page keeps working offline.