What is the best way to come out to unsupportive parents?

Coming out is a sacred and extremely personal thing to do. Only come out when YOU'RE ready, not when your friends or partner is ready. I have dealt with some emotionally abusing people trying to get me to come out to my family. I never did because I knew that this was my thing, my sexuality. No one has control over what you can do. Anyways, the best way to come out is when you are 100% sure you are ready and you know you will be safe after coming out.

Explain to parents that you are who you are, you were born to be you and no one else. Feel no shame in being you. Parents will always love you. Some may find it harder than others to understand, but the will in time. Communicating with loved ones is the key to being happy in yourself. Never keep concerns bottled up when help is always around you.

If you feel like coming out could endanger you (e.g. if your parents could abuse you / kick you out of their house), the best thing to do is to not come out. Just wait until you are independant, wait until you are safe before you decide if you want to come out to them. Never feel like you absolutely have to do it. If you're safe, sure of yourself, comfortable with it and ready, go ahead. If not, wait until you are. That could be in a few months, or in a few decades, the time it takes does not matter. What is important is you, and how you feel afterwards.