Westlake (WLK) 8-K Entry into a Material Definitive Agreement

Exhibit 12.1

WESTLAKE CHEMICAL CORPORATION

STATEMENT SETTING FORTH DETAIL FOR COMPUTATION OF

RATIO OF EARNINGS TO FIXED CHARGES

(thousands of dollars)

	For the years ended December 31,															For the three months ended March 31,
	2011			2010			2009			2008			2007			2012
Earnings
Income (Loss) before Income Taxes	$	401,432		$	342,960		$	78,753		$	(58,022	)	$	158,957		$	134,795
Fixed Charges		65,513			54,886			50,836			52,031			34,507			16,153
Amortization of Capitalized Interest		—			—			—			—			—			—
Equity Investee Distributions		2,463			—			—			—			—			1,041
Capitalized Interest		(693	)		(22	)		(123	)		(3,198	)		(2,181	)		(736	)
Equity Investment (Income) Loss		(2,890	)		(2,212	)		(3,818	)		(621	)		(2,796	)		(339	)
Total Earnings Available for Fixed Charges	$	465,825		$	395,612		$	125,648		$	(9,810	)	$	188,487		$	150,914
Fixed charges
Interest Expense	$	50,922		$	39,875		$	34,957		$	33,957		$	18,422		$	12,177
Capitalized Interest		693			22			123			3,198			2,181		$	736
Amortization of Debt Issue Costs		1,683			2,154			1,461			954			760			400
Portion of Rentals		12,215			12,835			14,295			13,922			13,144			2,840
Total Fixed Charges	$	65,513		$	54,886		$	50,836		$	52,031		$	34,507		$	16,153
Ratio of Earnings to Fixed Charges		7.1			7.2			2.5			—			5.5			9.3