Roth IRA Backdoor tax implication

Hi,

In Dec 2022 I  opened  Traditional IRA  and contributed after-tax money $6000. 

I also have my company sponsored 401K plan. I have rolled over my previous company 401k in to roll over account.

 

If I want to do backdoor ROTH conversion of Traditional IRA that is after-tax money. Will I be taxed on that amount?

 

Thanks and Regards

RG