Can I convert my BNB to ETH?

I'm a bit perplexed here. I've been holding some BNB for quite some time, and now I'm considering converting it to ETH. Is it possible to do this conversion? And if so, what's the best way to go about it? I've heard about some exchanges offering this service, but I'm not entirely sure which one to choose. Could you provide some guidance on this matter? Also, are there any fees or commissions involved in the conversion process? I'd like to be fully informed before making a decision. Thank you for your help.