"America is just a whole other game with music.
"I'm going out there in a few days and it's going to be a hectic week. But they have parties and stuff, so I'm sure it will be balanced out."
On the prospect of performing for the music industry rather than fans, she said: "It is scary in that respect.
"But I want to prove myself, and sing a song that I'm so proud of, and so proud to sing and perform - so I'm looking forward to it."
Goulding, 29, is in a relationship with McFly's Dougie Poynter - but asked how often she sees him, she replied: "Not much."
She told Kelly: "He's out in LA, he's working really hard, he's doing all sorts of things.
"He's started acting which is amazing, and he's a complete natural, so I'm really excited to see what comes of that.
"We figure it out, we work it out. We're pretty realistic with things and we're pretty sensible about it, so we just see each other when we can."
On the question of settling down together, she said: "It's that kind of time that everything becomes up in the air - but at some point maybe."
- PAA
