Exhibit 12 The Williams Companies, Inc. Computation of Ratio of Earnings to Fixed Charges (Dollars in millions) Three months ended March 31, 2004 ------------------ Earnings: Income from continuing operations before income taxes $ 20.4 Add: Interest expense - net 239.3 Rental expense representative of interest factor 6.2 Minority interest in income of consolidated subsidiaries 4.8 Interest expense - net - 50% owned companies .4 Other (2.5) ------------- Total earnings as adjusted plus fixed charges $ 268.6 ============= Fixed charges: Interest expense - net $ 239.3 Capitalized interest 4.0 Rental expense representative of interest factor 6.2 Interest expense - net - 50% owned companies .4 ------------- Fixed charges $ 249.9 ============= Ratio of earnings to fixed charges 1.07 =============