Calculate electron orbit radius (r = n²a0/Z) and energy (E = -13.6 Z²/n²). Animated orbit. For JEE, NEET, AP, IB.
About Bohr Radius & Energy Level Calculator
The Bohr Radius & Energy Level Calculator is a free, interactive online physics tool. Enter Z and n to get orbit radius and energy level, with an animated electron orbit. It gives instant results with a clear visual and works on any device — ideal for Class 11 & 12 and college students preparing for CBSE/ICSE boards, JEE, NEET, AP Physics, IB Physics and A-Level Physics — and learners worldwide (UK, USA, Canada, Australia).
Frequently Asked Questions
Is the Bohr Radius & Energy Level Calculator free to use?
Yes — the Bohr Radius & Energy Level Calculator is 100% free, works online in your browser with no sign-up, and runs on both mobile and desktop.
Who is the Bohr Radius & Energy Level Calculator for?
Class 11 & 12 and college students preparing for CBSE/ICSE boards, JEE, NEET, AP Physics, IB Physics and A-Level Physics — and learners worldwide (UK, USA, Canada, Australia).
How do I use the Bohr Radius & Energy Level Calculator?
Enter the required values in the tool above and get instant, step-by-step results with a clear visual.
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