Exhibit 12 ---------- PPG INDUSTRIES, INC. AND CONSOLIDATED SUBSIDIARIES Computation of Ratio Of Earnings to Fixed Charges (Dollars in Millions) Year Ended December 31 Three Months --------------------------------------------- Ended 1994 1995 1996 1997 1998 March 31, 1999 ---- ---- ---- ---- ---- -------------- Earnings: Earnings before income taxes $ 840 $ 1,247 $ 1,215 $ 1,149 $ 1,267 $ 202 Plus: Fixed charges exclusive of capitalized interest 108 113 124 136 139 34 Amortization of capitalized interest 11 12 13 13 12 3 Adjustments for equity affiliates and minority interest (2) (4) (3) 0 (2) (1) -------------------------------------------------------------- Total $ 957 $ 1,368 $ 1,349 $ 1,298 $ 1,416 $ 238 ============================================================== Fixed Charges: Interest expense including amortization of debt discount/premium and debt expense $ 88 $ 91 $ 102 $ 113 $ 114 $ 27 Rentals - portion representative of interest 20 22 22 23 25 7 -------------------------------------------------------------- Fixed charges exclusive of capitalized interest 108 113 124 136 139 34 Capitalized interest 5 9 12 10 9 3 -------------------------------------------------------------- Total $ 113 $ 122 $ 136 $ 146 $ 148 $ 37 ============================================================== Ratio of earnings to fixed charges 8.4 11.3 9.9 8.9 9.6 6.4 ==============================================================