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)
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