Exhibit 12.1 Giant Industries, Inc. Computation of Ratio of Earnings to Fixed Charges (Thousands of Dollars) Year Ended December 31, ------------------------------------------------------------------------- 2003 2002 2001 2000 1999 -------- -------- -------- -------- -------- Earnings: Earnings (Loss) from Continuing Operations $ 12,337 $(11,099) $ 13,845 $ 7,858 $ 10,615 Provision (Benefit) for Income Taxes 7,971 (7,477) 8,702 3,820 5,743 Fixed Charges 45,594 39,729 27,719 28,130 28,221 -------- -------- -------- -------- -------- Subtotal 65,902 21,153 50,266 39,808 44,579 Less: Interest Capitalized -- -- -- 62 183 -------- -------- -------- -------- -------- Earnings Available for Fixed Charges $ 65,902 $ 21,153 $ 59,266 $ 39,746 $ 44,396 ======== ======== ======== ======== ======== Fixed Charges: Interest Expensed and Capitalized $ 38,645 $ 34,426 $ 24,135 $ 24,458 $ 24,176 Amortized Financing Fees 4,696 3,256 764 -- -- Interest Estimate Within Rental Expense 2,253 2,047 2,820 3,672 4,045 -------- -------- -------- -------- -------- Total Fixed Charges $ 45,594 $ 39,729 $ 27,719 $ 28,130 $ 28,221 ======== ======== ======== ======== ======== Deficiency N/A $ 18,576 N/A N/A N/A Ratio of Earnings to Fixed Charges 1.45 0.53 1.81 1.41 1.57