EXHIBIT 12

ONEOK, Inc.

Computation of Ratio of Earnings to Combined Fixed Charges

and Preferred Stock Dividend Requirements

	Years Ended
	December 31,
(Unaudited)	2002			2001
	(Thousands of Dollars)
Fixed Charges, as defined
Interest on long-term debt	$	87,933		$	109,229
Other interest		10,523			27,454
Amortization of debt discount and expense		7,949			3,475
Interest on lease agreements		8,878			5,698
Total Fixed Charges		115,283			145,856
Preferred dividend requirements		60,820			59,839
Total fixed charges and preferred dividend requirements	$	176,103		$	205,695
Earnings before income taxes and income from equity investees	$	258,095		$	108,218
Total fixed charges		115,283			145,856
Earnings available for combined fixed charges and preferred stock dividend requirements	$	373,378		$	254,074
Ratio of Earnings to combined fixed charges and preferred stock dividend requirements		2.12	x		1.24	x

For purposes of computing the ratio of earnings to combined fixed charges and preferred stock dividend requirements, “earnings” consists of income before cumulative effect of a change in accounting principle plus fixed charges and income taxes, less undistributed income for equity investees. “Fixed charges” consists of interest charges, the amortization of debt discounts and issue costs and the representative interest portion of operating leases. “Preferred dividend requirements” consists of the pre-tax preferred dividend requirement.