To get your TNEA score, divide your marks in Physics and Chemistry by 4. Then divide your marks in mathematics by 2 and add all of these and you shall get your TNEA score out of 200. This formula is for students whose score is out of 200.

For example, if your class 12 marks are out of 100, then your cutoff will be :

71%2 + 73%2 + 71 = 143, which is your cutoff for CBSE stream.

You should visit this link to predict colleges and courses of your choice.

 http://cutoff.annauniversitycounselling.com/tnea/cutoff_search