How Do colleges convert IB/IGCSE grades to GPA

<p>Im an American citizen, but I live abroad. Im wondering (I took the IGCSE diploma 9th and 10th, and am currently on the IB diploma program for 11th and 12th), how colleges view them in terms of GPA and their overall value. Will my treatment be valued significantly more because of an IB diploma rather than courses? And how should I convert any predicted scores into a GPA to give me an estimate for colleges?</p>

<p>Thanks.</p>

<p>BUMP 10 char</p>