Observations were made at SMK Negeri 5 Batam, it was seen that the career guidance services provided by BK teachers to students were less than optimal. This condition occurs because there are no BK teacher hours to enter class, lack of student interest in carrying out career guidance and the unbalanced ratio of BK teachers to students. The problem that arises is that only a few students come because they think the BK room is only for students with problems. Thus, career guidance at SMK Negeri 5 Batam has not been implemented effectively and evenly. The media used should pay attention to existing technological developments, be interesting to use, be able to display what is desired and can be accessed by students at any time. One of the media that can be used is Website-Based Career Guidance Media. The use of Website-Based Career Guidance Media can assist BK teachers in providing career guidance service materials effectively and equitably. The type of research used is Research and Development with 4-D model development procedures (Define, Design, Develop, and Disseminate). Testing on the effectiveness of the developed media obtained sig. (2 tailed) of 0.000 < 0.005, it is concluded that there is a difference in students’ career readiness for those who use website media and not use website media.