Exhibit 12 ---------- PPG INDUSTRIES, INC. AND CONSOLIDATED SUBSIDIARIES Computation of Ratio Of Earnings to Fixed Charges (Dollars in Millions) Three Months Year Ended December 31, Ended ---------------------------------------------------------- 1996 1997 1998 1999 2000 March 31, 2001 ---- ---- ---- ---- ---- -------------- Earnings: Earnings before income taxes and net earnings in equity affiliates $1,221 $1,165 $1,264 $ 945 $ 978 $ 108 Plus: Fixed charges exclusive of capitalized interest 118 128 135 164 217 58 Amortization of capitalized interest 13 13 12 10 10 2 Adjustments for equity affiliates 15 14 16 16 20 2 ----------------------------------------------------------- Total $1,367 $1,320 $1,427 $1,135 $1,225 $ 170 =========================================================== Fixed Charges: Interest expense including amortization of debt discount/premium and debt expense $ 96 $ 105 $ 110 $ 133 $ 177 $ 48 Rentals - portion representative of interest 22 23 25 31 40 10 ----------------------------------------------------------- Fixed charges exclusive of capitalized interest 118 128 135 164 217 58 Capitalized interest 12 10 9 11 16 4 ----------------------------------------------------------- Total $ 130 $ 138 $ 144 $ 175 $ 233 $ 62 =========================================================== Ratio of earnings to fixed charges 10.5 9.6 9.9 6.5 5.3 2.7 ===========================================================