Rio Tinto Finance Usa POSASR Automatic shelf registration (post-effective amendment)

Exhibit 12

STATEMENTS OF COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

IFRS

	Year ended December 31,
	2011			2010			2009			2008			2007
	(U.S.$ millions)
Earnings:
Income from continuing operations before taxes on income		13,214			20,491			7,860			9,178			9,836
Minority interests in pre-tax income of subsidiaries that have not incurred fixed charges		(96	)		(270	)		(412	)		(177	)		(104	)
Less: equity accounted units earnings		(112	)		(1,101	)		(786	)		(1,039	)		(1,584	)
Fixed charges added to earnings		603			751			988			1,694			614
Distributed income from equity investees		799			1,404			610			1,473			1,764
Amortization of capitalized interest		61			121			104			86			75
Total earnings		14,469			21,396			8,364			11,215			10,601
Fixed charges:
Interest expensed		497			671			929			1,618			538
Amount representative of the interest factor in rents		106			80			59			76			76
Total fixed charges added to earnings		603			751			988			1,694			614
Interest capitalized		493			182			198			203			122
Total fixed charges		1,096			933			1,186			1,897			736
Ratio of earnings to fixed charges		13.20			22.93			7.05			5.91			14.40