Thermo Fisher Scientific (TMO) 8-K Other Events

Exhibit 12.1

STATEMENT REGARDING COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

Ratio of Earnings to Fixed Charges

Thermo Fisher Scientific Inc.

The following table reflects the computation of the ratio of earnings to fixed charges for the periods presented (in millions, except ratio):

	Three Months Ended April 1,		Year Ended December 31,
	2017		2016		2015		2014		2013		2012
Earnings:
Income before provision for income taxes	$	502.9	$	2,023.9	$	1,936.4	$	2,087.2	$	1,319.5	$	1,269.4
Add:
Fixed charges		151.8		530.4		475.1		540.1		304.7		283.4
Total Earnings	$	654.7	$	2,554.3	$	2,411.5	$	2,627.3	$	1,624.2	$	1,552.8
Fixed Charges:
Interest expense	$	135.4	$	469.6	$	414.9	$	479.9	$	262.1	$	241.6
Estimate of interest in rent expense (1)		16.4		60.8		60.2		60.2		42.6		41.8
Total Fixed Charges	$	151.8	$	530.4	$	475.1	$	540.1	$	304.7	$	283.4
Ratio of Earnings to Fixed Charges		4.3		4.8		5.1		4.9		5.3		5.5

(1) We estimate that the interest component of rent expense approximates one-third of such expense.