Count lines and blank lines in plain text

How this is calculated

A long sentence can wrap across several visible rows in the editor and still occupy one actual line. Resize the browser and those visible rows change, while the line count stays the same. Press Enter and the count increases because the text now contains a line break. Windows line endings use a carriage return and a line feed together. This tool normalizes that pair to one line break, and it handles a standalone carriage return the same way. A completely empty input has zero lines here. Once there is text, a final newline creates an empty last line, which explains a common one-line difference between counting tools.

Verdict

Choose the total that matches the question you're asking. Use Lines for the structure of a text file, including its blank spacing. Use Nonempty lines when you're checking a list that may contain empty rows. A wrapped paragraph isn't a list of separate lines, and a line can contain more than one item if they're separated by commas or other characters. The count won't decide whether those entries are valid. If you're preparing data for another program, inspect its expected format and final newline behavior before treating the count as a record total.