Convert TXT to CSV

Want to convert TXT file to CSV file?

Try Withdata Data File Converter, a desktop TXT to CSV converter for Windows, MacOS, and Linux, Convert TXT to CSV, Easy and Fast.

• Can run in GUI mode, Step by Step, just a few mouse clicks.
• Can run in Command line, for Scheduled Tasks and Streams.
• Convert files locally and privately, avoid uploading large TXT file(s) to online services.
• Support Windows, Linux, and macOS.

Download Withdata DataFileConverter
Windows 64 bit
Windows 32 bit
Linux .deb (For Debian, Ubuntu) 64 bit
Linux .rpm (For Red Hat, Fedora, SUSE) 64 bit
MacOS 64 bit

Convert TXT to CSV

Choose TXT file -> Set CSV file -> Convert TXT to CSV

“Start a New Convert” for “TXT to CSV”.

Select From “File” “TXT” To “File” “CSV”.

1. Open source TXT file.

Support large TXT file ( > 4GB ).

Don’t worry about the delimiter, DataFileConverter will automatically determine the delimiter, includes comma, tab, colon, semicolon, pipe, hash (octothorpe), slash, asterisk, white space, and you can also enter a delimiter.

Source TXT file’s content is like this:

2. Config target CSV file.

3. Set rows options.

4. Convert TXT to CSV.

After converting, you can view the output CSV file.

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More about TXT to CSV converter

See also:

• Merge multiple TXT files into one CSV
• Batch convert TXT files to CSV files

TXT → CSV reference

Type mapping

Value kind	in TXT	in CSV
Int	1234, or right-aligned in a fixed-width column	1234
Text	written as-is; padding depends on the chosen layout	quoted only when it contains a comma or a quote
Long text	written as-is	must be quoted; line breaks inside force multi-line records
Date	whatever the writer chose	2026-09-18
Datetime	whatever the writer chose	2026-09-18 14:30:00
Binary	not representable	not representable - base64 or hex string
Boolean	Y / N, or 1 / 0, or TRUE / FALSE	TRUE / FALSE, or 1 / 0 depending on the writer
JSON	written as-is	the whole JSON value quoted, with internal quotes doubled

Dialect differences

Both TXT and CSV are file formats, so what differs below is how each one chooses to represent a value.

Property	in TXT	in CSV
identifiers	None by convention	Double quotes; a literal quote is doubled ("" )
dates	Whatever the writer produced; no convention is guaranteed	Conventional text: 2026-09-18 or 2026-09-18 14:30:00
separator	Whatever was chosen - often fixed column widths	Comma ","
shape	Free form; a parser has to be told the layout	Flat table, optional header row
ceiling	No formal limit	No formal limit; row count bounded by memory

Convert TXT to CSV the easy way

Use the TXT to CSV converter — an offline desktop app for Windows, macOS and Linux. Nothing to upload, large files and batch runs supported (free trial).