Curie to Becquerel Converter
Convert curies to becquerels (Ci to Bq) instantly with this free online radioactivity converter. Enter any value in the Curie field and get the equivalent in Becquerel immediately. This converter handles any quantity — from tiny fractions to large numbers — with full precision. No signup, no ads in the widget, and the conversion runs entirely in your browser for instant results.
The conversion factor is exact: 1 Ci = 3.7e+10 Bq. To convert curies to becquerels, multiply your Curie value by 3.7e+10. For example, 10 Ci = 3.7e+11 Bq. You can also reverse the calculation: 1 Bq = 2.702702703e-11 Ci.
Quick conversion table
| Curie (Ci) | Becquerel (Bq) |
|---|---|
| 1 Ci | 3.7e+10 Bq |
| 5 Ci | 1.85e+11 Bq |
| 10 Ci | 3.7e+11 Bq |
| 25 Ci | 9.25e+11 Bq |
| 50 Ci | 1.85e+12 Bq |
| 100 Ci | 3.7e+12 Bq |
Use the swap button to reverse the direction, or choose a different unit from the dropdown menus to convert within the radioactivity category.
Formula
Curie to Becquerel conversion: 1 Ci = 3.7e+10 Bq becquerels = curies × 3.7e+10 1 Bq = 2.702702703e-11 Ci curies = becquerels × 2.702702703e-11
Example
Example: Convert 10 Ci to Bq: 10 Ci × 3.7e+10 = 3.7e+11 Bq So, 10 Ci is about 3.7e+11 Bq. To convert back, multiply by 2.702702703e-11: 3.7e+11 Bq × 2.702702703e-11 = 10 Ci.
How to Use
- Enter the value you want to convert in the Curie field
- The result in Becquerel appears instantly below
- Use the dropdown menus to change units if needed
- Click 'Swap Units' to reverse the conversion direction
- Copy the result or adjust the input for a new conversion
Frequently Asked Questions
How do I convert curies to becquerels?
Enter the value in Curie (Ci) in the 'From' field. The equivalent in Becquerel (Bq) appears instantly in the 'To' field. The converter uses precise conversion factors and updates in real time as you type.
What is the formula to convert Ci to Bq?
1 Ci = 3.7e+10 Bq, so becquerels = curies × 3.7e+10. To convert back, 1 Bq = 2.702702703e-11 Ci. The full formula and a worked example are shown on this page.
How many becquerels are in one Curie?
1 Ci = 3.7e+10 Bq.
Is this Curie to Becquerel converter free?
Yes, completely free with no signup, no limits, and no ads in the converter widget. You can convert as many values as you need. The tool runs entirely in your browser, so your data never leaves your device.
Can I convert becquerels back to curies?
Yes. Click the 'Swap Units' button to reverse the direction. You can also use the dropdown menus to select any other radioactivity unit for either field.
How accurate is the Ci to Bq conversion?
The converter uses high-precision conversion factors (up to 8 decimal places). Results are displayed with up to 6 decimal places, with trailing zeros removed for readability. For scientific or engineering work, always verify with official standards.