Rutherfords to Curies Converter
Enter the radioactive activity in rutherfords below to convert it to curies.
Convert Rutherfords to Curies
Enter a value in rutherfords (Rd) to convert to curies (Ci).
Rutherford to Curie Conversion Table
Table showing various rutherford measurements converted to curies. Click any preset value or arrow to load it into the converter.
| Rutherfords (Rd) | Curies (Ci) |
|---|---|
| 1 Rd | 0.000027027 Ci |
| 2 Rd | 0.000054054 Ci |
| 2.5 Rd | 0.000067568 Ci |
| 5 Rd | 0.000135135 Ci |
| 10 Rd | 0.00027027 Ci |
| 15 Rd | 0.000405405 Ci |
| 20 Rd | 0.000540541 Ci |
| 25 Rd | 0.000675676 Ci |
| 30 Rd | 0.000810811 Ci |
| 50 Rd | 0.0013514 Ci |
How to Convert Rutherfords to Curies
To convert rutherfords to curies, multiply the radioactive activity by the following conversion ratio: 0.000027027 curies/rutherford.
Since one rutherford is equal to 0.000027027 curies, you can use this simple formula to convert:
The radioactive activity in curies is equal to the radioactive activity in rutherfords multiplied by 0.000027027.
For example, here's how to convert 5 rutherfords to curies using the formula above.
How Many Curies Are in a Rutherford?
There are 0.000027027 curies in a rutherford, which is why we use this value in the formula above.
Our rutherford to curie calculator automatically converts your radioactive activity measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Rutherfords and curies are both units used to measure radioactive activity. Keep reading to learn more about each unit.
What Is a Rutherford?
A rutherford is a unit of radioactive activity equal to 1,000,000 becquerels (Bq), the base unit for radioactive activity. Equal to 1 Megabecquerel (10⁶ decays/s). [1]
The rutherford is classified as a standard unit of radioactive activity. Rutherfords can be abbreviated as Rd; for example, 1 rutherford can be written as 1 Rd.
When working with rutherfords (Rd) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, rutherfords (Rd) are widely used across large-scale industrial, bulk, and macro-level radioactive activity specifications within international standard workflows, engineering documentation, and technical data sheets.
What Is a Curie?
A curie is a unit of radioactive activity equal to 37,000,000,000 becquerels (Bq), the base unit for radioactive activity. Traditional radioactivity unit equal to 3.7×10¹⁰ Becquerels (37 GBq). [2]
The curie is classified as a standard unit of radioactive activity. Curies can be abbreviated as Ci; for example, 1 curie can be written as 1 Ci.
When working with curies (Ci) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, curies (Ci) are widely used across large-scale industrial, bulk, and macro-level radioactive activity specifications within international standard workflows, engineering documentation, and technical data sheets.
When converting radioactive activity between rutherfords (Rd) and curies (Ci), keep full floating-point precision (1 Rd = 0.000027027 Ci; 1 Ci = 37,000 Rd) during intermediate calculations and round only the final curie figure to match your instrument tolerance.
More Rutherford & Curie Conversions
Need to calculate in the opposite direction? Use our curies to rutherfords calculator to switch your starting unit immediately. You can also explore related tools such as converting curies to rutherfords, converting becquerels to kilobecquerels, or converting kilobecquerels to becquerels.
Convert from Rutherfords
Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Length)·Radiation-Activity Metrology Standard — Rutherfords (Rd) to Curies (Ci)
- [2]BIPM SpecificationBIPM (SI Base Unit: Metre (m))·Unit Specifications: Rutherford (Rd) & Curie (Ci)
- [3]NIST HB 133 ReferenceNIST HB 133 (NIST Handbook 133 (2019 Ed.))·Conversion Factors & Mathematical Basis (Rd to Ci)