Hello Aspirant. You mentioned you have secured 145 score in JEE Advanced 2021. Based on your marks, your AIR may end up somewhere around 5501- 6000 although it may vary from the actual figure written in your grade card.

As you didn't mention your caste, I assume you belong to General category. Based on your marks, you have good chances  to get admission at few branches of IITs such as:

1. IIT Varanasi (Chem Engg, ME, CE, Engg Physics, Metallurgical Engg, Material Sciences and Engg, Mining Engg. B.Arch)
2. IIT Kharagpur - Indian Institute of Technology (CE, MME, Biotech & Biochem Engg, Ocean Engg and Naval Arch., Mining Engg, Agricultural & Food Engg)
3. Indian Institute of Technology, Guwahati (CE, Chem Sc and Tech, Biosciences & Bioengg)
4. Indian Institute of Technology, Gandhinagar (CE, Chem Engg, MSE)
5. Indian Institute of Technology, Hyderabad (CE, Materials Sc & Metallurgical Engg, Biomed Engg.)

To know more about JEE Advanced cutoffs based on previous years' data, check out this article:

https://engineering.careers360.com/articles/jee-advanced-cutoff

To know your chances of getting into Indian Institutes of Technologies, to analyze and identify the best colleges & courses you can get based on your rank for Engineering, to get your JEE Advanced personalised report delivered on mail as well as to check course & counselling-round wise cut-offs of JEE Advanced for various seat types, caste groups, etc., I encourage you to use JEE Advanced 2021 College Predictor:

https://engineering.careers360.com/jee-advanced-college-predictor?utm_source=qna&utm_medium=jee_adv_cp

I hope this information helps you. I wish you all the best for your future and career.

Thank you.

Hi aspirant,

See it is quite difficult to predict the the expected rank as it depends upon various factors which includes the number of candidates appeared, the level of questions, and moderation policy applied to various sets. However based upon the previous trends for rank vs marks, your crl could lie around 25000.

To know more about it, visit https://engineering.careers360.com/articles/jee-advanced-marks-vs-rank

Hope it helps!?