Exhibit 12 PHILLIPS PETROLEUM COMPANY AND CONSOLIDATED SUBSIDIARIES TOTAL ENTERPRISE Computation of Ratio of Earnings to Fixed Charges Millions of Dollars ------------------------------------ Years Ended December 31 ------------------------------------ 1993 1992 1991 1990 1989 ------------------------------------ (Unaudited) Earnings Available for Fixed Charges: Income before income taxes, extraordinary items and cumulative effect of changes in accounting principles $538 511 451 1,187 536 Equity in undistributed earnings of less-than-fifty-percent- owned companies 9 (3) 1 7 (6) Fixed charges, excluding capitalized interest and the portion of the preferred dividend requirements of a subsidiary not previously deducted from income* 358 438 631 665 758 ------------------------------------ $905 946 1,083 1,859 1,288 ==================================== Fixed Charges: Interest and expense on indebtedness, excluding capitalized interest $289 392 460 622 647 Capitalized interest 10 16 37 17 4 Preferred dividend requirements of a subsidiary 71 3 - - - One-third of rental expense, net of subleasing income, for operating leases 26 34 34 29 25 ------------------------------------ $396 445 531 668 676 ==================================== Ratio of Earnings to Fixed Charges 2.3 2.1 2.0 2.8 1.9 - --------------------- *Includes amortization of capitalized interest totaling approximately $11 million, $10 million, $137 million, $14 million and $86 million in 1993, 1992, 1991, 1990 and 1989, respectively. For 1991 and 1989, the amount includes approximately $120 million and $71 million, respectively, of capitalized interest associated with the writedown of offshore California investments. 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. Consolidated interest expense includes interest attributable to the LTSSP borrowings of $1 million, $1 million, $13 million, $10 million and $7 million in 1993, 1992, 1991, 1990 and 1989, respectively.