Becquerels to Curies Converter
1 becquerel ≈ 2.7027027e-11 curies
1 becquerel equals 2.7027e-11 curies
How to convert becquerels to curies
Activity counts decays: 1 Bq = 1 decay/s and 1 Ci = 3.7 × 10¹⁰ Bq. Activity alone does not determine absorbed or equivalent dose; the radionuclide, exposure pathway and geometry also matter.
Ci = Bq ÷ 37000000000One curie corresponds to 37000000000 becquerels, so divide by that figure. Displayed constants may be rounded; the converter uses the stored factor before rounding the result.
2.7027e-10 Ci ≈ 10 ÷ 37000000000Becquerels to curies conversion table
Common values in becquerels, converted to curies.
| Becquerels (Bq) | Curies (Ci) |
|---|---|
| 1 | 2.7027027e-11 |
| 2 | 5.4054054e-11 |
| 3 | 8.1081081e-11 |
| 4 | 1.0810811e-10 |
| 5 | 1.3513514e-10 |
| 10 | 2.7027027e-10 |
| 20 | 5.4054054e-10 |
| 25 | 6.7567568e-10 |
| 50 | 1.3513514e-9 |
| 100 | 2.7027027e-9 |
| 250 | 6.7567568e-9 |
| 500 | 1.3513514e-8 |
| 1,000 | 2.7027027e-8 |
About these units
becquerelBq
The SI unit of radioactivity: one nuclear decay per second.
curieCi
The legacy unit of radioactivity: exactly 3.7 × 10¹⁰ becquerels.
Sources and precision
Table results are rounded to 8 significant digits; formula constants may be rounded to 10. Worked example answers use 6 significant digits. The converter starts at 6 significant digits and lets you change display precision. Calculations use the stored factors without intermediate rounding. Exact unit definitions do not make an input measurement more precise; conventional and measured factors follow the assumptions stated here.