Exhibit 12

ONEOK, Inc.
Computation of Ratio of Earnings to Fixed Charges
	Years Ended December 31,
(Unaudited)	2008			2007			2006			2005			2004
	(Thousands of dollars)
Fixed Charges, as defined
Interest on long-term debt	$	254,765		$	249,925		$	233,152		$	117,365		$	79,318
Other interest		44,858			16,115			4,493			27,031			5,239
Amortization of debt discount, premium    and expense		4,421			5,710			4,115			3,935			3,713
Interest on lease agreements		29,524			37,448			12,738			20,781			21,638
Total Fixed Charges		333,568			309,198			254,498			169,112			109,908
Earnings before income taxes and undistributed income of equity method investees		771,239			681,169			747,950			647,308			314,714
Earnings available for fixed charges	$	1,104,807		$	990,367		$	1,002,448		$	816,420		$	424,622
Ratio of earnings to fixed charges		3.31	x		3.20	x		3.94	x		4.83	x		3.86	x
For purposes of computing the ratio of earnings to fixed charges, "earnings" consists of income before cumulative effect of a change in accounting principle plus fixed charges, minority interests in income of consolidated subsidiaries, income taxes and distributed income of equity method investees, less capitalized interest and undistributed income of equity method investees. "Fixed charges" consists of interest expensed and capitalized, the amortization of debt discounts and issue costs and the representative interest portion of operating leases.