Exhibit 12 PPG INDUSTRIES, INC. AND CONSOLIDATED SUBSIDIARIES Computation of Ratio Of Earnings to Fixed Charges (Dollars in Millions) Year Ended December 31 -------------------------------------------------------- 1994 1995 1996 1997 1998 Earnings: Earnings before income taxes $ 840 $ 1,247 $ 1,215 $ 1,149 $ 1,267 Plus: Fixed charges exclusive of capitalized interest 108 113 124 136 139 Amortization of capitalized interest 11 12 13 13 12 Adjustments for equity affiliates and minority interest (2) (4) (3) 0 (2) ----------------------------------------------------------- Total $ 957 $ 1,368 $ 1,349 $ 1,298 $ 1,416 =========================================================== Fixed Charges: Interest expense including amortization of debt discount/premium and debt expense $ 88 $ 91 $ 102 $ 113 $ 114 Rentals - portion representative of interest 20 22 22 23 25 ----------------------------------------------------------- Fixed charges exclusive of capitalized interest 108 113 124 136 139 Capitalized interest 5 9 12 10 9 ----------------------------------------------------------- Total $ 113 $ 122 $ 136 $ 146 $ 148 =========================================================== Ratio of earnings to fixed charges 8.4 11.3 9.9 8.9 9.6 =========================================================== Six Months Ended June 30, 1999 --------------- Earnings: Earnings before income taxes $ 502 Plus: Fixed charges exclusive of capitalized interest 70 Amortization of capitalized interest 5 Adjustments for equity affiliates and minority interest (1) --------------- Total $ 576 =============== Fixed Charges: Interest expense including amortization of debt discount/premium and debt expense $ 57 Rentals - portion representative of interest 13 --------------- Fixed charges exclusive of capitalized interest 70 Capitalized interest 5 --------------- Total $ 75 =============== Ratio of earnings to fixed charges 7.7 ===============