Exhibit 12 MASCO CORPORATION AND CONSOLIDATED SUBSIDIARIES Computation of Ratio of Earnings to Fixed Charges (Thousands of Dollars) Three Months Ended March 31, Year Ended December 31, 1997 1996 1995 1994 1993 1992 Earnings Before Income Taxes and Fixed Charges: Income from continuing operations before income taxes $139,200 $502,700 $351,790 $292,830 $349,190 $296,020 Deduct/add equity in undistributed (earnings)/ loss of equity affiliates (6,530) (12,310) (17,770) 106,200 (13,750) (13,210) Add interest on indebtedness, net 18,590 74,790 73,400 60,360 62,860 57,190 Add amortization of debt expense 320 1,400 1,930 2,220 2,650 2,710 Add estimated interest factor for rentals 1,620 6,150 4,970 4,220 3,190 3,290 Earnings from continuing operations before income taxes and fixed charges $153,200 $572,730 $414,320 $465,830 $404,140 $346,000 Fixed Charges: Interest on indebtedness regarding continuing operations $ 19,170 $ 77,250 $ 76,460 $ 63,220 $ 63,600 $ 69,890 Amortization of debt expense 320 1,400 1,930 2,220 2,650 2,710 Estimated interest factor for rentals 1,620 6,150 4,970 4,220 3,190 3,290 $ 21,110 $ 84,800 $ 83,360 $ 69,660 $ 69,440 $ 75,890 Ratio of earnings to fixed charges 7.3 6.8 5.0 6.7 5.8 4.6