Hey, I know everyone talks about Breath of the Wild, but one thing I was curious about was just how big the world map actually is in real world units. I mean, it IS one of the biggest contiguous maps ever used in a Zelda game right? So I found a way to measure it because like I said when I calculated Sonic's height based on his Generations scaling, I'm crazy and obsessed. There is a guy on one of the towers interested in seeing how far you can glide, so I flew directly south in as straight a line as I could manage, and paused on the map screen when I reached 500m. Then I took a ruler to the screen of my Switch and found when zoomed out as far as possible that 500m distance was half a cm, giving a convenient scale of 1cm to the kilometer. From there it was a simple act of measuring the traversable part of the map on the screen, where I found it to be 11cm by 6.5cm, or 11km by 6.5km. This means the nation of Hyrule is a landmass of about 71.5 square kilometers (that's roughly 27.5 square miles for us Americans.) For context I looked to see if there was anywhere in the real world about this size, and the island of Guernsey in the English Channel is pretty close with a size of 78.1 square km: en.wikipedia.org/wiki/File:Gue… Of course since I'm American that doesn't mean much to me, so I googled the square mileage of Manhattan, good ol' everyone knows how big it is New York City, which is 22.8 square miles (33.6 if you count the area of the rivers that surround it.) That means the land of Hyrule is just a bit larger than New York City, pretty varied climate zones for such a tiny nation state huh?
TL,DR: Hyrule is 27.5 square miles, making it a bit larger than Manhattan's 22.8, and about the same size as the island of Guernsey.
Anyone who wants to double check my measurements and offer corrections feel free to do so in the comments.