In this research, it is aimed to develop a "Maths Attainment Scale" which can reveal the level of reaching mathematical achievements of university students. According to this, the study was performed with a total of 159 university students from various departments of Faculty of Engineering, Faculty of Science and Faculty of Economics in Dokuz Eylul University. In order to determine the content validity of the scale, it has benefited from the opinions of 8 specialists who were working in the field of mathematics education and educational sciences. Pre-trial practice of the scale was performed with 30 teacher candidates who were randomly selected from Elementary Mathematics Education Department in Buca Education Faculty of Dokuz Eylul University. An exploratory factor analysis has been made for construct validity of the "Maths Attainment Scale". As a result of the factor analysis, after the items must have been taken from the scale have been removed, a scale which consists of 28 items has been formed. The highest score that can be obtained from the scale will be 140, and the lowest score will be 28. When obtained data were overall examined, it can be said that the "Maths Attainment Scale" prepared by the researcher has high validity and reliability. It is believed that the developed scale can close a serious gap in the related literature by providing important contributions to Maths Education and Educators.