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) March 30, 1997 ------------------ Income before Income Taxes $114.60 Deduct: Equity income 1.10 ------ Subtotal 113.50 Add: Dividends from less than 50% owned companies - Proportional share of income before income taxes of 50% owned companies 0.09 ------ Adjusted income 113.59 ------ Fixed charges Interest on Indebtedness 20.62 Amortization of Debt Expense .30 Interest Portion of Rent Expense 13.47 ------ Total Fixed Charges 34.39 ------ Total Available Income $147.98 ====== Ratio of Earnings to Fixed Charges 4.30 ====== ii