You would need to repeat a standard paragraph approximately 1,200 times to reach this file size.
If this is for a software project, you might be looking for structured placeholder data.
A text file is actually quite large for plain text, containing roughly 100,000 to 110,000 words (about the length of a 350-page novel).
📌 If you are trying to generate a dummy file of this exact size on a Mac or Linux terminal, you can use this command: mkfile 628k 628K.txt