If in Windows 7 / 8 run the command(if you cant find run hit Start+R) PERFMON /RES
This will open the Resource Monitor tool, you can then go to the Network tab along the top and then look at the connection for ESO.EXE(at work pretty sure thats the executable) and find the latency(ping) in m/s by scrolling across.
Currently there is no in-game option to do this.
Edited by Disodium on March 31, 2014 2:23AM
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