Under 6 feet at this point?
I'm guessing around 5'10".
At least he's still taller than Sly....(and you just KNOW Sly hates that).
No matter HOW much that vain little turd works out, he will always be...a shrimp, and shorter than Arnie.
He's definitely shrunk as you can easily see his body had better days and his posture always looks off now. Though he still looks somewhere in the 6ft= 6ft1 range judging by other famous people he has stood next to. LOL at he's still taller than Sly. Sly has done everything to keep his body and height good over the years while Arnold's gone to crap starting from his governor days. Not to mention Sly likes to wear height enhancing shoes (hence why he's slightly taller than Jason Statham in those Expendables films), but Arnold is still maintain above Sly's height.
Keeping on the height topic, I wonder if Arnold had a decompressed/bent spine during his body builder/Pumping Iron days? I've seen pics from that time where Arnold's torso looks rather small and his back is noticeable improper. I also remember a pic of him next to Chris Reeve and Chris had like half a head on Arnold but it was from his Pumping Iron days judging by his hair. Then I looked at another pic of Arnold with Chris during the 80s where there was only like a inch height difference between them this time and his torso was noticeable much longer in his T2 full body pics in comparison to his Pumping Iron days. This might explain why Jeff Bridges was slightly taller than him in that movie.