Exhibit 12.1

United States Steel Corporation

Computation of Ratio of Earnings to Fixed Charges

(Unaudited)

	Year Ended December 31,
(Dollars in Millions)	2013			2012			2011			2010			2009
Earnings:
Income (loss) before income taxes and noncontrolling interests	$	(2,232	)	$	6		$	27		$	(385	)	$	(1,845	)
Fixed charges, as shown below	373			306			280			259			211
Adjustment for equity (income) loss	(40		)	(144		)	(85		)	(20		)	29
Capitalized Interest	(19		)	(41		)	(39		)	(16		)	(15		)
Distributions from equity affiliates	13			99			33			6			12
Adjusted (Loss) Earnings (A)	$	(1,905	)	$	226		$	216		$	(156	)	$	(1,608	)
Fixed charges:
Portion of rentals representing interest	$	41		$	34		$	36		$	32		$	26
Capitalized interest	19			41			39			16			15
Other interest and fixed charges	313			231			205			211			170
Total fixed charges (B)	$	373		$	306		$	280		$	259		$	211
Ratio of (A) to (B)	(e)			(d)			(c)			(b)			(a)

(a) Earnings did not cover fixed charges by $1,819 million.

(b) Earnings did not cover fixed charges by $415 million.

(c) Earnings did not cover fixed charges by $64 million.

(d) Earnings did not cover fixed charges by $80 million.

(e) Earnings did not cover fixed charges by $2,278 million.