Exhibit 11 Page 1 of 2 COLGATE-PALMOLIVE COMPANY COMPUTATION OF EARNINGS PER COMMON SHARE (Dollars in Millions Except Per Share Amounts) (Unaudited) Three Months Ended March 31, ------------------------ 1998 1997 ------- ------ BASIC Earnings: Net income $196.0 $169.6 Deduct: Dividends on preferred shares 5.3 5.4 ------- ------- Net income applicable to common shares $190.7 $164.2 ------- ------- ------- ------- Shares (in millions): Weighted average shares outstanding 295.6 294.6 ------- ------- ------- ------- Earnings per common share, basic $ .65 $ .56 ------- ------- ------- ------- 13 Exhibit 11 Page 2 of 2 COLGATE-PALMOLIVE COMPANY COMPUTATION OF EARNINGS PER COMMON SHARE (Dollars in Millions Except Per Share Amounts) (Unaudited) Three Months Ended March 31, ---------------------------- 1998 1997 ------- ------- DILUTED Earnings: Net income $196.0 $169.6 Deduct: Dividends on preferred shares .1 .1 Deduct: Replacement funding .5 .6 ------- ------- Net income applicable to common shares $195.4 $168.9 ------- ------- ------- ------- Shares (in millions): Weighted average number of common shares outstanding 295.6 294.6 Add: Assumed exercise of options reduced by the number of shares purchased with the proceeds 7.3 6.1 Add: Assumed conversion of Series B convertible Preference Stock 22.8 23.3 ------- ------- Adjusted weighted average shares outstanding 325.7 324.0 ------- ------- ------- ------- Earnings per common share, diluted $ .60 $ .52 ------- ------- ------- ------- 14