There may not be an official source for the size of the various provinces of Tamriel, but that doesn’t stop me from trying to figure it out anyway!
*Note: I triple checked all of my calculations, but if you find an error or mistake please let me know. I have been known to be a dumby in the past, could definitely happen again.
Sources:
https://en.uesp.net/wiki/Daggerfall:Dimensions_of_the_Iliac_Bay
https://www.nationmaster.com/country-info/stats/Geography/Land-area/Square-miles
https://core.ac.uk/download/pdf/267014183.pdf
Mentioned reddit/forum threads:
https://www.reddit.com/r/teslore/comments/19y118/the_lorecorrect_size_of_tamriel_20_pictures_inside/
https://www.reddit.com/r/teslore/comments/8k7jrg/how_big_is_tamriel/
https://forums.elderscrollsonline.com/en/discussion/451515/how-big-is-tamriel-really
https://www.reddit.com/r/teslore/comments/8k7jrg/how_big_is_tamriel/
Source
Skip to 5:23 if you think math is dumb and just want the sizes
Does it hurt to have a brain that big? ❤️
Out of curiosity, how long did it take you to do this math?