##### 



Exhibit 7.1

Ratio of earnings to fixed charges

The ratio of earnings to fixed charges is calculated by dividing earnings by
fixed charges. Fixed charges consist of interest expense and the interest
portion of rental expense.

|                                              |                                    |  |                         |      |      |  |        |      |      |  |       |      |  |  |       |      |  |  |       |      | 
|--------------------------------------------- | ---------------------------------- |  | ----------------------- | ---- | ---- |  | ------ | ---- | ---- |  | ----- | ---- |  |  | ----- | ---- |  |  | ----- | ---- | 
|                                              |                                    |  | Year ended December 31,
|                                              |                                    |  |                        
|                                              |                                    |  | 2002                    |      | 2001 |  | 2000   |      | 1999 |  | 1998 
|                                              |                                    |  |                         |      |      |  |        |      |      |  |      
|Income (loss) before
taxes                    |                                    |  | 57.4                    |      |      |  | (537.3 | )    |      |  | (48.8 | )    |  |  | 98.4  |      |  |  | 178.3 |     
|Fixed charges:                                |                                    |  |                         |      |      |  |        |      |      |  |       |      |  |  |       |      |  |  |       |     
|                                              | Interest expense                   |  |                         | 16.4 |      |  |        | 24.2 |      |  |       | 17.1 |  |  |       | 17.5 |  |  |       | 16.1 | 
|                                              | Interest portion
of rental expense |  |                         | 439  |      |  |        | 3.6  |      |  |       | 3.4  |  |  |       | 2.5  |  |  |       | 2.5  | 
|                                              |                                    |  |                         |      |      |  |        |      |      |  |       |      |  |  |       |      |  |  |       |     
|Income (loss) before
taxes plus fixed
charges |                                    |  | 78.7                    |      |      |  | (509.5 | )    |      |  | (28.3 | )    |  |  | 118.4 |      |  |  | 196.9 |     
|                                              |                                    |  |                         |      |      |  |        |      |      |  |       |      |  |  |       |      |  |  |       |     
|Fixed charges:                                |                                    |  |                         |      |      |  |        |      |      |  |       |      |  |  |       |      |  |  |       |     
|                                              | Interest expense                   |  |                         | 16.4 |      |  |        | 24.2 |      |  |       | 17.1 |  |  |       | 17.5 |  |  |       | 16.1 | 
|                                              | Interest portion
of rental expense |  |                         | 4.9  |      |  |        | 3.6  |      |  |       | 3.4  |  |  |       | 2.5  |  |  |       | 2.5  | 
|                                              |                                    |  |                         |      |      |  |        |      |      |  |       |      |  |  |       |      |  |  |       |     
|                                              |                                    |  | 21.3                    |      |      |  | 27.8   |      |      |  | 20.5  |      |  |  | 20.0  |      |  |  | 18.6  |     
|                                              |                                    |  |                         |      |      |  |        |      |      |  |       |      |  |  |       |      |  |  |       |     
|Ratio of earnings to
fixed charges            |                                    |  | 3.7                     |      |      |  | (a)    |      |      |  | (b)   |      |  |  | 5.9   |      |  |  | 10.6  |     



|(a) |  | The ratio coverage is less than 1:1. Converium would need to
generate additional earnings of $537.3 million to achieve a coverage
ratio of 1:1.
|--- |  | -----------------------------------------------------------------------------------------------------------------------------------------------
|   
|(b) |  | The ratio coverage is less than 1:1. Converium would need to
generate additional earnings of $48.8 million to achieve a coverage
ratio of 1:1.