EXHIBIT 12.1 HYPERION TELECOMMUNICATIONS, INC. CALCULATION OF RATIO OF EARNINGS TO COMBINED FIXED CHARGES AND PREFERRED STOCK DIVIDENDS (DOLLARS IN THOUSANDS) PRO FORMA PRO FORMA THREE THREE YEAR MONTHS MONTHS YEAR ENDED MARCH 31, ENDED ENDED ENDED --------------------------------------------- MARCH 31, JUNE 30, JUNE 30, 1993 1994 1995 1996 1997 1997 1997 1997 ------- ------- ------- -------- -------- --------- -------- --------- Loss before Income Taxes, Equity in Net Loss of Joint Ventures and Cumulative Effect of Change in Accounting Principle.............. $ (881) $(4,294) $(5,922) $ (9,525) $(23,065) $(53,690) $(10,726) $(18,382) Add: Equity in Net Loss of Joint Ventures......... (194) (528) (1,799) (4,292) (7,223) (7,223) (2,540) (2,540) Fixed Charges, Excluding Capitalized Interest... -- 2,164 3,321 6,088 28,377 59,002 8,077 15,733 ------- ------- ------- -------- -------- -------- -------- -------- Net Loss Available for Combined Fixed Charges and Preferred Stock Dividends.............. (1,075) (2,658) (4,400) (7,729) (1,911) (1,911) (5,189) (5,189) ------- ------- ------- -------- -------- -------- -------- -------- Combined Fixed Charges and Preferred Stock Dividends: Interest Expense...... -- 2,164 3,321 6,088 28,377 59,002 8,077 15,733 Preferred Stock Dividends............ -- -- -- -- -- 27,000 -- 6,400 ------- ------- ------- -------- -------- -------- -------- -------- Total Combined Fixed Charges and Preferred Stock Dividends........ -- 2,164 3,321 6,088 28,377 86,002 8,077 22,133 ------- ------- ------- -------- -------- -------- -------- -------- Ratio of Earnings to Combined Fixed Charges and Preferred Stock Dividends.............. -- -- -- -- -- -- -- -- Deficiency in Earnings Required to Cover Combined Fixed Charges and Preferred Stock Dividends........ $(1,075) $(4,822) $(7,721) $(13,817) $(30,288) $(87,913) $(13,266) $(27,322) ======= ======= ======= ======== ======== ======== ======== ========