How do I tell my parents I do not agree with their opinion?

Personally I thing this would depend a great deal on two factors, one being the relationship you have with your parents, and two how you yourself feel about sharing with them when you do not agree with their opinion. You know yourself and the relationship you have with your parents better than anyone else. Also you might want to be mindful of how strongly you do or do not agree with their opinions, as to be mindful to be selective on "choosing your battles" when you do not agree with their opinions...this is my personal perspective, of course.

Simply tell them. However, do it in a respectful way. They are your parents and you should respect their opinion just as much as they should respect yours.

Straight up tell them that you don't agree with them. You're going to end up telling them you disagree so might as well go all in and tell them straight up that you disagree.

Calmly. Talk to them without screaming and those stuffs and tell them honestly what you think about something .Tell them how you feel.

Respectfully! If you approach your parents with respect when disagreeing with them, they will return the favor and show you respect in their responses.

Try to say, in a non respectfulness way, that you don't agree with their opinion, explain your own opinion and why do you think that's correct.

Every man or woman is different, and it is totally fine if you dont agree with them. Just tell them gently how you feel, and they would have to listen to you.

The disagreement between the parents and kids is healthy if they can reach a consensus. The parents usually accept a different opinion with a good conversation. Just avoid turning a discussion into an argument..

First of all, improve your general knowledge. Then begin by saying-Sorry! i beg to differ and then put forward your thoughts.

If you're not comfortable with an opinion or a decision of your parents, try to pick a quiet moment when they're not stressed and ask them to sit down and have a chat with you. Explain to them - in a calm and rational manner - why you disagree with their opinion or their actions. Maybe you've already come up with a different solution/opinion on your own - explain it to them and even if they don't agree with you, it can still be the start of a good conversation that leads to a better understanding on both sides.