EXHIBIT 12

Weyerhaeuser Company and Subsidiaries

Computation of Ratios of Earnings to Fixed Charges

For the quarters ended March 31, 2013, and March 31, 2012

(Dollar amounts in millions)

	QUARTER ENDED
	MARCH 2013			MARCH 2012
Available earnings:
Earnings before interest expense, amortization of debt expense and income taxes	$	276		$	116
Add: interest portion of rental expense	3			4
Add: undistributed loss of equity affiliates and income attributable to noncontrolling interests in subsidiaries	2			2
Available earnings	$	281		$	122
Fixed charges:
Interest expense incurred:
Weyerhaeuser Company and subsidiaries, excluding Weyerhaeuser Real Estate Company and other related subsidiaries	$	84		$	86
Weyerhaeuser Real Estate Company and other related subsidiaries	5			5
Subtotal	89			91
Less: intercompany interest	(3		)	(1		)
Total interest expense incurred	86			90
Amortization of debt expense	1			2
Interest portion of rental expense	3			4
Total fixed charges	$	90		$	96
Ratio of earnings to fixed charges	3.12			1.27

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

For the quarters ended March 31, 2013 and March 31, 2012

(Dollar amounts in millions)

	QUARTER ENDED
	MARCH 2013		MARCH 2012
Available earnings:
Earnings before interest expense, amortization of debt expense and income taxes	$	268	$	111
Add: interest portion of rental expense	3		3
Add: undistributed loss of equity affiliates and attributable to noncontrolling interests in subsidiaries	1		2
Add: undistributed earnings before income taxes of Weyerhaeuser Real Estate Company and other related subsidiaries	—		9
Available earnings	$	272	$	125
Fixed charges:
Interest expense incurred	$	84	$	86
Amortization of debt expense	1		2
Interest portion of rental expense	3		3
Total fixed charges	$	88	$	91
Ratio of earnings to fixed charges	3.09		1.37