Tile
A tile is the smallest piece of the world map. The whole factorio world is made out of them.
Tiles are a unit used to measure both area and distance.
A Chunk is 32x32 tiles. A chunk is the next largest unit for area/distance.
How to see tiles and chunks?
You can either
- pause the game (by default with Shift-Space) or
- you can use the Debug mode to turn the tile-layer on.
Examples
- Area covered by Radar: about 100 tiles diameter (100 tiles in each direction, bounded to the matching Chunk, read about Radar to understand this)
- Speed of a basic belt: about 1.8 tiles/sec.
- It takes about 2 minutes and 47 seconds to run 1000 tiles without speed up. Which means that the character is a very healthy man/woman.
Real size of tiles
1 Tile is generally assumed to be 1 square meter in size (like Minecraft). This Discussion proves, that this assumption seems to be true.
Length or area?
If you want to make it clear whether you are referring to a tile as length or area please use something like "tile length", "square tiles", "tile^2" or similar, but in most cases it should be clear.