Exhibit 12

                                MOBIL CORPORATION
                COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES 
                     (In millions, except for ratio amount) 


                                             Year Ended December 31,
                                    ---------------------------------------
                                     1991    1992    1993    1994     1995
                                    ------  ------  ------  ------   ------
Income Before Change in   
  Accounting Principle(s) ........  $1,920  $1,308  $2,084  $1,759   $2,376
Add:
  Income taxes ...................   2,105   1,567   1,931   1,919    2,015  
  Portion of rents representative
    of interest factor ...........     344     319     339     340      368
  Interest and amortization
    of debt discount expense .....     713     612     529(a)  461      467   
  Earnings (greater) less 
    than dividends from 
    equity affiliates ............    (151)     36     265     (40)     (51)
                                    ------  ------  ------  ------   ------
Income as Adjusted ...............  $4,931  $3,842  $5,148  $4,439   $5,175    
                                    ======  ======  ======  ======   ======

Fixed Charges:
  Interest and amortization 
    of debt discount expense .....  $  713  $  612  $  529(a)  461   $  467    
  Capitalized interest ...........      20      42      42      37       47
  Portion of rents representative
    of interest factor ...........     344     319     339     340      368
                                    ------  ------  ------  ------   ------
Total Fixed Charges ..............  $1,077  $  973  $  910  $  838   $  882
                                    ======  ======  ======  ======   ======

Ratio of Earnings to Fixed Charges     4.6     3.9     5.7(a)  5.3      5.9    
                                    ------  ------  ------  ------   ------



For the years ended December 31, 1991, 1992, 1993, 1994 and 1995, Fixed Charges 
exclude $42 million, $37 million, $31 million, $37 million and $28 million,
respectively, of interest expense attributable to debt issued by the Mobil Oil
Corporation Employee Stock Ownership Plan Trust and guaranteed by Mobil.

(a) Excludes the favorable effect of $205 million of interest benefits from 
    the resolution of prior-period tax issues.
  


Mobil                                 - 26 -