Batch convert JSON files to CSV files

Shiji Pan

1 year ago

Want to batch convert JSON files to CSV files?

Try Withdata Data File Converter, a desktop JSON to CSV converter for Windows, MacOS, and Linux, Batch convert JSON 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 JSON file(s) to online services.
Support Windows, Linux, and macOS.

Click “Start a New Convert” at task dialog.

then show the wizard.

Select From “Files” “JSON” To “Files” “CSV”.

And config the first source JSON file.

List source JSON files.

After converting, you can view output CSV files.

JSON → CSV reference

Value kind	in JSON	in CSV
Int	`1234 (number)`	`1234`
Decimal	`1234.56 (number)`	`1234.56`
Float	`1.234e10 (number)`	`1.234e+10`
Text	`"text" (string)`	`quoted only when it contains a comma or a quote`
Long text	`"multi-line\ntext" (escaped newline inside a string)`	`must be quoted; line breaks inside force multi-line records`
Date	`"2026-09-18" (string)`	`2026-09-18`
Datetime	`"2026-09-18T14:30:00Z" (string)`	`2026-09-18 14:30:00`
Binary	`"base64:..." (string)`	`not representable - base64 or hex string`
Boolean	`true / false (boolean)`	`TRUE / FALSE, or 1 / 0 depending on the writer`
JSON	`nested object or array, kept as structure`	`the whole JSON value quoted, with internal quotes doubled`

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

Property	in JSON	in CSV
identifiers	`Double quotes; backslash escapes`	`Double quotes; a literal quote is doubled ("" )`
dates	`No date type: dates arrive as strings and the reader must p...`	`Conventional text: 2026-09-18 or 2026-09-18 14:30:00`
binary	`Not supported natively - base64 inside a string`	`Not supported`
separator	`Braces and commas`	`Comma ","`
encoding	`UTF-8 by definition`	`No declaration - UTF-8 works only with a BOM`
typing	`string, number, boolean, null, object, array - no date type`	`None - every field is text`
shape	`Nested objects and arrays`	`Flat table, optional header row`
ceiling	`Whole document is usually parsed into memory`	`No formal limit; row count bounded by memory`

For batch jobs, large files and scheduling use the Data File Converter converter — an offline desktop app for Windows, Linux and macOS. Free trial.