Exhibit 12.1

United States Steel Corporation

Computation of Ratio of Earnings to Combined Fixed Charges

and Preferred Stock Dividends

(Unaudited)

 

     Year Ended December 31,  

(Dollars in Millions)

   2010     2009     2008      2007      2006  

Portion of rentals representing interest

   $ 32      $ 26      $ 33       $ 32       $ 44   

Capitalized interest

     16        15        14         7         3   

Other interest and fixed charges

     211        170        179         135         123   

Pretax earnings which would be required to cover preferred stock dividend requirements

     —          —          —           —           10   
                                          

Combined fixed charges and preferred stock dividends (A)

   $ 259      $ 211      $ 226       $ 174       $ 180   
                                          

Earnings-pretax income with applicable adjustments (B)

   $ (141   $ (1,592   $ 3,203       $ 1,305       $ 1,884   
                                          

Ratio of (B) to (A)

     (b )       (a     14.17         7.50         10.47   

 

(a) Earnings did not cover fixed charges by $1,803 million.
(b) Earnings did not cover fixed charges by $400 million.