Exhibit 12

WASHINGTON REAL ESTATE INVESTMENT TRUST

Computation of Ratio of Earnings to Fixed Charges

For the Period Ended September 30, 2008

(In thousands)

 

     Q3 2008     Q3 2007     YTD 2008     YTD 2007  

Income from continuing operations

   $ 5,613     $ 7,772     $ 8,325     $ 23,871  

Additions:

        

Fixed charges

        

Interest expense

     17,148       15,824       52,395       45,498  

Capitalized interest

     441       1,726       1,870       4,629  
                                
     17,589       17,550       54,265       50,127  

Deductions:

        

Capitalized interest

     (441 )     (1,726 )     (1,870 )     (4,629 )
                                

Adjusted earnings

   $ 22,761     $ 23,596     $ 60,720     $ 69,369  
                                

Fixed Charges (from above)

   $ 17,589     $ 17,550     $ 54,265     $ 50,127  

Ratio of Earnings to Fixed Charges

     1.29       1.34       1.12       1.38