Masimo (MASI) 10-K 2011 FY Annual report

Exhibit 12.1

Masimo Corporation

Ratio of Earnings to Fixed Charges

(dollars in thousands)

	Fiscal Year Ended
	December 31, 2011			January 1, 2011			January 2, 2010			January 3, 2009		December 29, 2007
Ratio of earnings to fixed charges:
Income before provision for income taxes	$	86,531		$	107,569		$	82,180		$	72,391	$	68,122
Fixed charges		1,910			1,941			1,768			2,435		3,831
Noncontrolling interests in pre-tax income		(58	)		(676	)		(1,159	)		—		—
Total earnings	$	88,383		$	108,834		$	82,789		$	74,826	$	71,953
Fixed charges
Interest expensed	$	116		$	23		$	75		$	753	$	2,475
Estimate of interest within rental expense		1,794			1,918			1,693			1,682		1,356
Total fixed charges	$	1,910		$	1,941		$	1,768		$	2,435	$	3,831
Ratio of earnings to fixed charges		46.27			56.07			46.83			30.73		18.78
Ratio of earnings to fixed charges and preferred stock dividends:
Income before provision for income taxes	$	86,531		$	107,569		$	82,180		$	72,391	$	68,122
Fixed charges and preferred stock dividends		1,910			1,941			1,768			2,435		11,629
Noncontrolling interests in pre-tax income		(58	)		(676	)		(1,159	)		—		—
Total earnings	$	88,383		$	108,834		$	82,789		$	74,826	$	79,751
Fixed charges and preferred stock dividends
Interest expensed	$	116		$	23		$	75		$	753	$	2,475
Estimate of interest within rental expense		1,794			1,918			1,693			1,682		1,356
Preferred stock dividend requirement		—			—			—			—		7,798
Total fixed charges and preferred stock dividends	$	1,910		$	1,941		$	1,768		$	2,435	$	11,629
Ratio of earnings to fixed charges and preferred stock dividends		46.27			56.07			46.83			30.73		6.86