EXHIBIT 12 HONEYWELL INC. AND SUBSIDIARIES COMBINED WITH PROPORTIONAL SHARES OF 50% OWNED COMPANIES COMPUTATION OF RATIOS OF EARNINGS TO FIXED CHARGES (Unaudited) Three Months Ended (Dollars in Millions) April 5, 1998 ------------- Income before Income Taxes $143.8 Deduct: Equity income (loss) (0.3) ------ Subtotal 144.1 Add: Dividends from less than 50% owned companies 0.0 Proportional share of income before income taxes of 50% owned companies (0.3) ------ Adjusted income 143.8 Fixed charges Interest on Indebtedness 26.4 Amortization of Debt Expense 0.4 Interest Portion of Rent Expense 12.1 ------ Total Fixed Charges 38.9 Total Available Income $182.7 ====== Ratio of Earnings to Fixed Charges 4.70 i