How do I convert WBNB to BNB?

Could you please explain to me the steps involved in converting WBNB to BNB? I'm a bit confused about the process and would appreciate a clear, concise outline. Are there any specific platforms or wallets that I need to use for this conversion? Also, are there any fees associated with the conversion, and if so, how are they calculated? Finally, is there a time frame for the conversion to take place, or is it instantaneous? Thank you for your help in clarifying this matter.