How to get pan number from aadhar number?

Actually, you can't directly retrieve a PAN number using only an Aadhaar number. This is for security reasons, to protect your personal data.

However, the Income Tax Department has a service to help. You should visit their official e-Filing portal and use the 'Know Your PAN' facility. You will need to enter other personal details, such as your name and date of birth, to verify your identity. It's a rather straightforward process to recover your details there.