Pot odds... trying to make easy?

OK, I have the general jist of hand odds and pot odds, but never really FULLY understood them... so I'm hoping I can get a little help here.

I can figure out the odds of making my hand easily, take the outs, and x2 for 1 card, and x4 to see two cards and that's the % I'll make my hand. I understand that.

I also understand, that if there's $2 already in the pot, and the bet to me is $1 then I'm getting 3-1 on my money, right?

But now, I'm getting a fraction vs a percentage. SO, if I'm getting 3-1 on my money, can I then convert that to 25%? And base my decision on whether I have a 25% or more chance of hitting? This decision is based entirely upon the odds and nothing else.

Cheers.