where can i see what my world size is terraria?

Answer 1

easiest way is to use a depth meter and compare how deep you get to the following table

Map	Size in Feet	Size in Blocks	Floating Islands
Small	8400 x 2400	4200 x 1200	2-3
Medium	12600 x 3600	6300 x 1800	4-5
Large	16800 x 4800	8400 x 2400	5-6

now youd have to measure up and down to get the height

depth meter is made with 6 gold, 8 silver and 10 copper bars while standing at a table and chair