How to check Bitcoin fees?

Hello there, I'm curious about how one would go about checking Bitcoin fees. As a cryptocurrency enthusiast, I've noticed that transaction fees can vary significantly depending on various factors. Is there a reliable method or platform that you would recommend for checking Bitcoin fees in real-time? I'm looking for a way to ensure that I'm making informed decisions when it comes to sending Bitcoin, and understanding the associated fees is a crucial part of that. Thank you for your time and assistance.