How big are Minecraft maps?

I'm planning on doing some map art, but first I'm going to need to know the amount of blocks maps are. The smallest is, I think, 128x128 (16,384 in total) but I would like to know all the other sizes too. Whenever I search for the sizes, I get Minecraft worlds…

There are five sizes for maps, but the pixels have different measurements for each:

1) 128 x 128. 1 pixel = 1 block
2) 256 x 256. 1 pixel = 2 x 2 blocks
3) 512 x 512. 1 pixel = 4 x 4 blocks
4) 1024 x 1024. 1 pixel = 8 x 8 blocks
5) 2048 x 2048. 1 pixel = 16 x 16 blocks

Minecraft PC worlds are theoretically infinite, but i don't think any computer can actully handle that.

As each "chunk" (that the game renders) is 64 (length) x 64 (width) x 256 (height)… & ASSUMING you're going with a top-down perspective, 64 x 64 pixels will be the SMALLEST MAP you'll have. If you go isometric (3/4 3D), the dimensions will be larger (~90 x ~346 pixels).

HOWEVER, more map renders in Minecraft are RARELY one chunk. If you run with a 100 km^2 map, that's 10,000 x 10,000 pixels for a top-down view & ~14,142 x ~14,398 for isometric.

Please be aware that I'm running under the assumption that 1 pixel = 1 block (= 1 m^2 for top-down views). If you choose to render the map with more pixels OR compress multiple blocks into one pixel, the size of your map will vary greatly depending on the desired detail level you want.