Exhibit 11 OIL-DRI CORPORATION OF AMERICA Computation of Weighted Average Number of Shares Outstanding Average Shares- (Weighted Number Number of Shares) Number of Shares Weighted of Days Quarter End Period Days Outstanding Shares As Adjusted January 31, 11/01/96 to 25 6,670,051 166,751,275 1997 11/25/96 11/26/96 to 6 6,666,551 39,999,306 12/01/96 12/02/96 to 4 6,664,051 26,656,204 12/05/96 12/06/96 to 7 6,661,551 46,630,857 12/12/96 12/13/96 to 6 6,660,651 39,963,906 12/18/96 12/19/96 to 15 6,658,751 99,881,265 01/02/97 01/03/97 to 4 6,648,751 26,595,004 01/06/97 01/07/97 to 13 6,646,851 86,409,063 01/19/97 01/20/97 to 1 6,646,751 6,646,751 01/20/97 01/21/97 to 11 6,616,951 72,786,461 92 612,320,092 6,655,653 2,083 6,657,736 January 31, 11/01/95 to 92 6,812,922 626,788,824 1996 01/31/96 92 626,788,824 6,812,922 Assuming exercise of options reduced by the number of shares which could have been purchased with the proceeds from exercise of such options. 786 6,813,708 Average Shares- (Weighted Number Number of Shares) of Shares Weighted Number of Six Months Period Days Outstanding Shares Days As Ended Adjusted January 31, 08/01/96 to 55 6,736,451 370,504,805 1997 09/24/96 09/25/96 to 1 6,733,951 6,733,951 09/25/96 09/26/96 to 1 6,717,551 6,717,551 09/26/96 09/27/96 to 3 6,710,451 20,131,353 09/29/96 09/30/96 to 1 6,708,451 6,708,451 09/30/96 10/01/96 to 1 6,705,251 6,705,251 10/01/96 10/02/96 to 1 6,702,251 6,702,251 10/02/96 10/03/96 to 12 6,701,751 80,421,012 10/14/96 10/15/96 to 1 6,698,451 6,698,451 10/15/96 10/16/96 to 1 6,695,751 6,695,751 10/16/96 10/17/96 to 1 6,690,251 6,690,251 10/17/96 10/18/96 to 11 6,678,051 73,458,561 10/28/96 10/29/96 to 28 6,670,051 186,761,428 11/25/96 11/26/96 to 6 6,666,551 39,999,306 12/01/96 12/02/96 to 4 6,664,051 26,656,204 12/05/96 12/06/96 to 7 6,661,551 46,630,857 12/12/96 12/13/96 to 6 6,660,651 39,963,906 12/18/96 12/19/96 to 15 6,658,751 99,881,265 01/02/97 01/03/97 to 4 6,648,751 26,595,004 01/06/97 01/07/97 to 13 6,646,851 86,409,063 01/19/97 01/20/97 to 1 6,646,751 6,646,751 01/20/97 01/21/97 to 11 6,616,951 72,786,461 01/31/97 184 1,230,497,884 6,687,489 1,731 6,689,220 Six Months Ended January 31, 08/01/95 to 8 6,901,322 55,210,576 1996 08/08/95 08/09/95 to 63 6,841,322 431,003,286 10/10/95 10/11/95 to 1 6,814,922 6,814,922 10/11/95 10/12/95 to 112 6,812,922 763,047,264 01/01/96 184 1,256,076,048 6,826,500 Assuming exercise of options reduced by the number of shares which could have been purchased with the proceeds from exercise of such options. 2,146 6,828,646