Exhibit 12 PHILLIPS PETROLEUM COMPANY AND CONSOLIDATED SUBSIDIARIES TOTAL ENTERPRISE Computation of Ratio of Earnings to Fixed Charges Millions of Dollars ------------------------ Nine Months Ended September 30 ------------------------ 1998 1997 ------------------------ (Unaudited) Earnings Available for Fixed Charges Income before income taxes $ 879 1,501 Distributions in excess of (less than) equity in earnings of less-than-fifty-percent-owned companies (5) (16) Fixed charges, excluding capitalized interest and the portion of the preferred dividend requirements of a subsidiary not previously deducted from income* 230 265 - ---------------------------------------------------------------------------- $1,104 1,750 ============================================================================ Fixed Charges Interest and expense on indebtedness, excluding capitalized interest $ 149 166 Capitalized interest 38 34 Preferred dividend requirements of subsidiary and capital trusts 40 86 One-third of rental expense, net of subleasing income, for operating leases 29 27 - ---------------------------------------------------------------------------- $ 256 313 ============================================================================ Ratio of Earnings to Fixed Charges 4.3 5.6 - ---------------------------------------------------------------------------- *Includes amortization of capitalized interest totaling approximately $12 million and $10 million in 1998 and 1997, respectively. Earnings available for fixed charges include, if any, the company's equity in losses of companies owned less than fifty percent and having debt for which the company is contingently liable. Fixed charges include the company's proportionate share, if any, of interest relating to the contingent debt. In 1990 and 1988, respectively, the company guaranteed a $400 million bank loan and $250 million of notes payable for the Long-Term Stock Savings Plan (LTSSP), an employee benefit plan. In 1994, the notes payable were refinanced with a $131 million term loan, which was repaid in June 1998. The $400 million loan was amended in 1994, 1995, and again in 1997. Consolidated interest expense included a minimal amount of interest related to LTSSP borrowings for the first nine months of 1998 and 1997.