Exhibit 12

Weyerhaeuser Company and Subsidiaries

Computation of Ratios of Earnings to Fixed Charges

(Dollar amounts in millions)

	2008			2007			2006			2005		2004			2003
Available earnings (loss):
Earnings (loss) from continuing operations before interest expense, amortization of debt expense and income taxes	$	(2,196	)	$	119		$	1,747		$	2,096	$	2,380		$	1,082
Add: interest portion of rental expense		42			42			40			38		40			38
Deduct: undistributed earnings of equity affiliates and minority interest in income of subsidiaries		167			169			(37	)		18		(32	)		23
Available earnings (loss)	$	(1,987	)	$	330		$	1,750		$	2,152	$	2,388		$	1,143
Fixed charges:
Interest expense incurred:
Weyerhaeuser Company and subsidiaries excluding Weyerhaeuser Real Estate Company and other related subsidiaries	$	466		$	564		$	506		$	624	$	726		$	704
Weyerhaeuser Real Estate Company and other related subsidiaries		60			65			67			53		57			53
Subtotal		526			629			573			677		783			757
Less: intercompany interest		(15	)		(8	)		(12	)		2		—			—
Total interest expense incurred		511			621			561			679		783			757
Amortization of debt expense		7			8			11			18		15			14
Interest portion of rental expense		42			42			40			38		40			38
Total fixed charges	$	560		$	671		$	612		$	735	$	838		$	809
Ratio of earnings to fixed charges		—			—			2.86			2.93		2.85			1.41
Coverage deficiency	$	2,547		$	341		$	—		$	—	$	—		$	—

Weyerhaeuser Company with its Weyerhaeuser Real Estate Company and Other Related Subsidiaries Accounted for on the Equity Method, but Excluding the Undistributed Earnings of Those Subsidiaries

Computation of Ratios of Earnings to Fixed Charges

(Dollar amounts in millions)

	Year Ended December 31,
	2008			2007			2006			2005			2004			2003
Available earnings (loss):
Earnings (loss) from continuing operations before interest expense, amortization of debt expense and income taxes	$	(2,245	)	$	62		$	1,671		$	2,027		$	2,288		$	1,002
Add: interest portion of rental expense		33			32			33			32			35			34
Deduct: undistributed earnings of equity affiliates and minority interest in income of subsidiaries		41			173			5			38			(2	)		16
Deduct: undistributed earnings before income taxes of Weyerhaeuser Real Estate Company and other related subsidiaries		1,357			(203	)		(724	)		(734	)		(610	)		(392	)
Add: dividends paid to Weyerhaeuser		—			—			—			—			—			115
Available earnings (loss)	$	(814	)	$	64		$	985		$	1,363		$	1,711		$	775
Fixed charges:
Interest expense incurred	$	466		$	564		$	506		$	624		$	726		$	704
Amortization of debt expense		7			8			11			18			15			14
Interest portion of rental expense		33			32			33			32			35			34
Total fixed charges	$	506		$	604		$	550		$	674		$	776		$	752
Ratio of earnings to fixed charges		—			—			1.79			2.02			2.20			1.03
Coverage deficiency	$	1,320		$	540		$	—		$	—		$	—		$	—