It heavily influences a whopping 30% of your credit score, and if you have several maxed-out cards, yours is probably sky-high.
But keep in mind that only the balances on revolving lines of credit are factored into your credit utilization ratio; by moving your credit card debt onto an installment loan (the personal loan), you’re shifting it in such a way that it will have a minimal impact on your credit. If you choose to consolidate with a 0% APR card via a balance transfer, the picture is a little more complicated.
All this is to say that consolidating with a 0% APR card might help your credit score somewhat, but you’ll probably see bigger gains by opting for a personal loan.
Nerd note: Remember that any time you obtain new credit your credit score will lose a few points temporarily.
As of July 2014, the average credit card interest rate is hovering around 15%.