How do I tell my parents I'm not straight without having them freak out/ kick me out/ hate me?

There's no way to predict their reaction for sure. However, it could help to start by coming out to the family members closest to you and/or those who are more supportive of the LGBT realities. If you're not sure who could be supportive, you can try discussing the LGBT topic to check their opinions. Be yourself and explain why and how you started questioning and came to your final conclusion, how you feel, what it means to be like you. If you open their heart and let them know what this journey has been like, maybe they will be more likely to be empathetic! Make sure they also know you'll be there to answer their questions and help them understand you better, if they want to. And remember: true love can defy prejudice. It has happened before, and it can happen to you too. If there's real love between you, they will accept you!

Well it depends on how your parents are. Tell me a bit about them. Then I can give you a better way of coming out to them.