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 45,492 41,611 27,682 28,145 27,375 -------- -------- -------- -------- -------- Subtotal 66,250 23,035 50,229 39,823 43,733 Less: Interest Capitalized -- -- -- 62 183 -------- -------- -------- -------- -------- Earnings Available for Fixed Charges $ 66,250 $ 23,035 $ 50,229 $ 39,761 $ 43,550 ======== ======== ======== ======== ======== Fixed Charges: Interest Expensed and Capitalized $ 38,993 $ 36,308 $ 24,098 $ 24,473 $ 23,330 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 $ 45,942 $ 41,611 $ 27,682 $ 28,145 $ 27,375 ======== ======== ======== ======== ======== Deficiency N/A $ 18,576 N/A N/A N/A Ratio of Earnings to Fixed Charges 1.44 0.55 1.81 1.41 1.59