Want to convert JSON file to CSV file?
Try Withdata Data File Converter, a desktop JSON to CSV converter for Windows, MacOS, and Linux, 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.
Download Withdata DataFileConverter 
Convert JSON to CSV
Choose JSON file -> Set CSV file -> Convert JSON to CSV
“Start a New Convert” for “JSON to CSV”.
Select From “File” “JSON” To “File” “CSV”.
1. Open source JSON file.
Support large JSON file ( > 4GB ).
Source JSON file’s content is like this:
2. Config target CSV file.
3. Set rows options.
4. Convert JSON to CSV.
After converting, you can view the output CSV file.
More about JSON to CSV converter
Download Withdata DataFileConverter
See Video: Convert JSON file to CSV file without coding
See also:
- Merge multiple JSON files into one CSV
- Batch convert JSON files to CSV files
- Convert JSON to CSV Online for Free
JSON → CSV reference
Type mapping
| 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 |
Dialect differences
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 |
Do it online, free
Skip the manual work — convert JSON to CSV online, free (runs in your browser, nothing is uploaded). For large files or batch jobs, use the desktop apps.
