Retirement tax questions

Thanks for the quick reply. That makes total sense and I figured that was probably the case. I just wanted to confirm because of the other possibilities. Also, I didn't convert the entire balance of my traditional IRAs, but it was more than my basis up to that point. It doesn't sound like the entire balance is the important part, though, correct? Just that it was more than the basis? And correct, I haven't made any such contributions but plan to soon, which is why I was trying to look this up.