As we already aware of the four parts of the IELTS Exam i.e. Listening, Reading, Writing and Speaking. The candidates will be given scores from 0-9 for each part of the test. By the average of these 4 parts you they will be getting the overall band score which will range from 0-9. It can be the whole number or with 0.5 values. (Example: 4.5, 7, 8.5,9,..)
So you can easily get your overall band score with the help of Band Score Calculator. Make use of it.