Convert TXT to JSON

Want to convert TXT file to JSON file?

Try Withdata Data File Converter, a desktop TXT to JSON converter for Windows, MacOS, and Linux, Convert TXT to JSON, 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 JSON

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

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

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

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 JSON file.

3. Set rows options.

4. Convert TXT to JSON.

After converting, you can view the output JSON file.

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More about TXT to JSON converter

See Video: Convert TXT file to JSON file

See also:

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

TXT → JSON reference

Type mapping

Value kind	in TXT	in JSON
Int	1234, or right-aligned in a fixed-width column	1234 (number)
Decimal	1234.56	1234.56 (number)
Float	1.234e+10	1.234e10 (number)
Text	written as-is; padding depends on the chosen layout	"text" (string)
Long text	written as-is	"multi-line\ntext" (escaped newline inside a string)
Date	whatever the writer chose	"2026-09-18" (string)
Datetime	whatever the writer chose	"2026-09-18T14:30:00Z" (string)
Binary	not representable	"base64:..." (string)
Boolean	Y / N, or 1 / 0, or TRUE / FALSE	true / false (boolean)
JSON	written as-is	nested object or array, kept as structure

Dialect differences

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

Property	in TXT	in JSON
identifiers	None by convention	Double quotes; backslash escapes
dates	Whatever the writer produced; no convention is guaranteed	No date type: dates arrive as strings and the reader must p...
binary	Not supported	Not supported natively - base64 inside a string
separator	Whatever was chosen - often fixed column widths	Braces and commas
encoding	No declaration - UTF-8 works only with a BOM	UTF-8 by definition
typing	None - every field is text	string, number, boolean, null, object, array - no date type
shape	Free form; a parser has to be told the layout	Nested objects and arrays
ceiling	No formal limit	Whole document is usually parsed into memory

Convert TXT to JSON the easy way

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