Exhibit 12.1

United States Steel Corporation

Computation of Ratio of Earnings to Fixed Charges

(Unaudited)

	Year Ended December 31,
(Dollars in Millions)	2011		2010		2009		2008		2007
Earnings:
Income (loss) before income taxes and noncontrolling interests	$	27	$	(385)	$	(1,845)	$	3,007	$	1,108
Fixed charges, as shown below		280		259		211		226		174
Adjustment for equity (income) loss		(85)		(20)		29		(93)		(26)
Distributions from equity affiliates		33		6		12		64		50
Adjusted Earnings (Loss) (A)	$	255	$	(140)	$	(1,593)	$	3,204	$	1,306
Fixed charges:
Portion of rentals representing interest	$	36	$	32	$	26	$	33	$	32
Capitalized interest		39		16		15		14		7
Other interest and fixed charges		205		211		170		179		135
Total fixed charges (B)	$	280	$	259	$	211	$	226	$	174
Ratio of (A) to (B)		(c)		(b)		(a)		14.18		7.51

(a) Earnings did not cover fixed charges by $1,804 million.

(b) Earnings did not cover fixed charges by $399 million.

(c) Earnings did not cover fixed charges by $25 million.