Hello,
No personal calculator is not allowed in JEE main and JEE advanced. You will have virtual calculators and you will be using those for calculation. NTA has released the admit card of JEE Mains 2021 on February 11 at jeemain.nta.nic.in. Candidates can now download the JEE Main 2021 admit card using application number and date of birth. NTA has released JEE Main exam dates for all the four-session. JEE Main Feb 2021 exam will be conducted from February 23 to 26. Only the following items will be allowed in the exam hall.
You are not allowed to bring any electronics devices (which includes watch and calculators) to the exam hall for the JEE Mains/Advanced Exams. You can use the virtual calculators that will be available to you on your computer screen. You can also practice doing all the calculations by yourself when you study thereby helping you to increase your speed.
Good Luck
FOr JEE Mains, please refer to the below given links:
https://engineering.careers360.com/articles/best-study-material-for-jee-main
https://engineering.careers360.com/articles/jee-main-syllabus-weightage
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