Exhibit 12

ONEOK, Inc.

Computation of Ratio of Earnings to Fixed Charges

	Years Ended December 31,
(Unaudited)	2011			2010			2009			2008			2007
	(Thousands of dollars)
Fixed Charges, as defined
Interest on long-term debt	$	305,523		$	287,910		$	292,768		$	254,765		$	249,925
Other interest		8,374			4,594			20,411			44,858			16,115
Amortization of debt discount, premium    and expense		7,070			4,623			4,597			4,421			5,710
Interest on lease agreements		1,515			19,289			20,221			29,524			37,448
Total Fixed Charges		322,482			316,416			337,997			333,568			309,198
Earnings before income taxes and undistributed    income of equity method investees		970,746			745,354			718,656			771,239			681,169
Earnings available for fixed charges	$	1,293,228		$	1,061,770		$	1,056,653		$	1,104,807		$	990,367
Ratio of earnings to fixed charges		4.01	x		3.36	x		3.13	x		3.31	x		3.20	x

For purposes of computing the ratio of earnings to fixed charges, "earnings" consists of pre-tax income from continuing operations before adjustment for income or loss from equity investees plus fixed charges and distributed income of equity investees, less interest capitalized. "Fixed charges" consists of interest charges, the amortization of debt discounts and issue costs and the representative interest portion of operating leases.