Interesting..I'm 1 5/8. I used to be an even inch but it was a different stoma. For awhile I had to see and et nurse regularly and she said "oh dr, so-and-so did your surgery." She could tell by the size of my stoma! Apparently, it makes a difference who your surgeon is--I prefer the smaller stoma myself. Also, after being prego, my ostomy was a lot bigger, too. And, of course, I used to have the mound on my left side (old ostomy) and now with my new ostomy it's on my right. I kinda hoped I would at least even out, but no, now I'm just lopsided on the opposite side!