Exhibit 12

Nucor Corporation

2015 Form 10-Q

	Computation of Ratio of Earnings to Fixed Charges
	Year-ended December 31,															Three Months Ended			Three Months Ended
																April 4,			April 5,
	2010			2011			2012			2013			2014			2015			2014
	(In thousands, except ratios)
Earnings
Earnings/(loss) before income taxes and noncontrolling interests	$	267,115		$	1,251,812		$	852,940		$	791,123		$	1,204,577		$	119,045		$	207,501
Plus: (earnings)/losses from equity investments		32,082			10,043			13,323			(9,297	)		(13,505	)		259			(4,474	)
Plus: fixed charges (includes interest expense and amortization of bond issuance costs and settled swaps and estimated interest on rent expense)		163,626			183,541			179,169			164,128			178,240			45,444			43,806
Plus: amortization of capitalized interest		2,332			2,724			2,550			3,064			4,166			1,003			1,180
Plus: distributed income of equity investees		4,923			3,883			9,946			8,708			53,738			—			—
Less: interest capitalized		(940	)		(3,509	)		(4,715	)		(10,913	)		(2,946	)		(91	)		(1,602	)
Less: pre-tax earnings in noncontrolling interests in subsidiaries that have not incurred fixed charges		(73,110	)		(83,591	)		(88,507	)		(97,504	)		(101,844	)		(16,492	)		(18,665	)
Total earnings/(loss) before fixed charges	$	396,028		$	1,364,903		$	964,706		$	849,309		$	1,322,426		$	149,168		$	227,746
Fixed charges
Interest cost and amortization of bond issuance and settled swaps	$	162,213		$	182,321		$	178,218		$	162,899		$	177,088		$	45,160		$	43,496
Estimated interest on rent expense		1,413			1,220			951			1,229			1,152			284			310
Total fixed charges	$	163,626		$	183,541		$	179,169		$	164,128		$	178,240		$	45,444		$	43,806
Ratio of earnings to fixed charges		2.42			7.44			5.38			5.17			7.42			3.28			5.20