Exhibit 12

Nucor Corporation

2016 Form 10-K

Computation of Ratio of Earnings to Fixed Charges

	Year ended December 31,
	2012*			2013*			2014*			2015*			2016*
	(In thousands, except ratios)
Earnings
Earnings before income taxes and noncontrolling interests	$	647,004		$	808,568		$	1,147,288		$	241,866		$	1,298,659
Plus: (earnings)/losses from equity investments		13,323			(9,297	)		(13,505	)		(5,329	)		(38,757	)
Plus: fixed charges (includes interest expense and amortization of bond issuance costs and settled swaps and estimated interest on rent expense)		179,169			164,128			178,240			178,941			186,437
Plus: amortization of capitalized interest		2,550			3,064			4,166			4,062			3,715
Plus: distributed income of equity investees		9,946			8,708			53,738			15,132			40,602
Less: interest capitalized		(4,715	)		(10,913	)		(2,946	)		(311	)		(3,940	)
Less: pre-tax earnings in noncontrolling interests in subsidiaries that have not incurred fixed charges		(83,207	)		(94,330	)		(99,227	)		(112,306	)		(104,145	)
Total earnings before fixed charges	$	814,070		$	869,928		$	1,267,754		$	322,055		$	1,382,571
Fixed charges
Interest cost and amortization of bond issuance and settled swaps	$	178,218		$	162,899		$	177,088		$	177,855		$	185,119
Estimated interest on rent expense		951			1,229			1,152			1,086			1,318
Total fixed charges	$	179,169		$	164,128		$	178,240		$	178,941		$	186,437
Ratio of earnings to fixed charges		4.54			5.30			7.11			1.80			7.42

* In the fourth quarter of 2016, Nucor changed its accounting method for valuing certain inventories from the last-in, first-out (LIFO) inventory valuation method. All periods presented in the above table reflect this change in accounting principle.