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Becquerels to Curies Converter (Bq to Ci)

1 Bq = 2.702702703 × 10⁻¹¹ Ci. Type any value to convert becquerels to curies.

1 Bq = 2.702702703 × 10⁻¹¹ Ci

Formula: Ci = Bq ÷ 37,000,000,000

Common values
Decimals
In every unit 8 units
Becquerel (Bq) 1 Bq
Kilobecquerel (kBq) 0.001 kBq
Megabecquerel (MBq) 0.000001 MBq
Gigabecquerel (GBq) 1 × 10⁻⁹ GBq
Curie (Ci) 2.702702703 × 10⁻¹¹ Ci
Millicurie (mCi) 2.702702703 × 10⁻⁸ mCi
Microcurie (µCi) 0.00002702702703 µCi
Rutherford (Rd) 0.000001 Rd

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If you continue, the file is uploaded over an encrypted connection and converted on our server. You can keep using the site meanwhile. The original is deleted as soon as it is converted; the result is kept for 6 hours so you can download it, and you can delete it at any time. Files are never shared or used for anything else.

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Becquerels to curies table

Formula: Ci = Bq ÷ 37,000,000,000

Becquerel (Bq)Curie (Ci)
0.1 Bq2.702702703 × 10⁻¹² Ci
0.25 Bq6.756756757 × 10⁻¹² Ci
0.5 Bq1.351351351 × 10⁻¹¹ Ci
1 Bq2.702702703 × 10⁻¹¹ Ci
2 Bq5.405405405 × 10⁻¹¹ Ci
3 Bq8.108108108 × 10⁻¹¹ Ci
4 Bq1.081081081 × 10⁻¹⁰ Ci
5 Bq1.351351351 × 10⁻¹⁰ Ci
6 Bq1.621621622 × 10⁻¹⁰ Ci
7 Bq1.891891892 × 10⁻¹⁰ Ci
8 Bq2.162162162 × 10⁻¹⁰ Ci
9 Bq2.432432432 × 10⁻¹⁰ Ci
10 Bq2.702702703 × 10⁻¹⁰ Ci
12 Bq3.243243243 × 10⁻¹⁰ Ci
15 Bq4.054054054 × 10⁻¹⁰ Ci
20 Bq5.405405405 × 10⁻¹⁰ Ci
25 Bq6.756756757 × 10⁻¹⁰ Ci
30 Bq8.108108108 × 10⁻¹⁰ Ci
40 Bq1.081081081 × 10⁻⁹ Ci
50 Bq1.351351351 × 10⁻⁹ Ci
60 Bq1.621621622 × 10⁻⁹ Ci
75 Bq2.027027027 × 10⁻⁹ Ci
100 Bq2.702702703 × 10⁻⁹ Ci
150 Bq4.054054054 × 10⁻⁹ Ci
200 Bq5.405405405 × 10⁻⁹ Ci
250 Bq6.756756757 × 10⁻⁹ Ci
500 Bq1.351351351 × 10⁻⁸ Ci
1,000 Bq2.702702703 × 10⁻⁸ Ci

How to use: Becquerels to Curies

  1. 1 Type the value in becquerels.
  2. 2 The result in curies appears at once – or type in the curies field to convert back.
  3. 3 Pick a common value, round to fewer decimals or swap the units with one click.
  4. 4 Copy the result, or open “In every unit” to see the value in all units of radioactivity.

About this tool

Becquerel (Bq) is a unit of radioactivity (SI). Curie (Ci) is a unit of radioactivity; 1 Ci = 37,000,000,000 Bq.

To convert becquerels to curies, divide the value by 37,000,000,000 (Ci = Bq ÷ 37,000,000,000). Example: 100 Bq = 2.702702703 × 10⁻⁹ Ci.

Calculated in your browser – nothing you type is sent anywhere.

Frequently asked questions

How do I convert becquerels to curies?

To convert becquerels to curies, divide the value by 37,000,000,000: Ci = Bq ÷ 37,000,000,000. For example 100 Bq = 2.702702703 × 10⁻⁹ Ci.

What is 1 Bq in curies?

1 Bq = 2.702702703 × 10⁻¹¹ Ci. The other way round, 1 Ci = 37,000,000,000 Bq.

How exact is the result?

The converter uses the official definitions of both units and shows up to 10 significant digits; choose 0–6 decimals to round. Both units are defined exactly in terms of each other, so the factor itself is exact.

Can I convert other units of radioactivity here?

Yes – choose any of the 8 units of radioactivity in the From and To lists, or switch to another measurement at the top.

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