Want to convert TSV file to JSON file?
Try Withdata Data File Converter, a desktop TSV to JSON converter for Windows, MacOS, and Linux, Convert TSV 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 TSV file(s) to online services.
- Support Windows, Linux, and macOS.
Download Withdata DataFileConverter 
Convert TSV to JSON
Choose TSV file -> Set JSON file -> Convert TSV to JSON
“Start a New Convert” for “TSV to JSON”.
Select From “File” “TSV” To “File” “JSON”.
1. Open source TSV file.
Support large TSV file ( > 4GB ).
Source TSV file’s content is like this:
2. Config target JSON file.
3. Set rows options.
4. Convert TSV to JSON.
After converting, you can view the output JSON file.
More about TSV to JSON converter
Download Withdata DataFileConverter
See Video: Convert TSV file to JSON file without coding
See also:
TSV → JSON reference
Type mapping
| Value kind | in TSV | in JSON |
|---|---|---|
| Int | 1234 | 1234 (number) |
| Decimal | 1234.56 | 1234.56 (number) |
| Float | 1.234e+10 | 1.234e10 (number) |
| Text | unquoted; a tab in the value splits the column | "text" (string) |
| Long text | unquoted; newlines break the row | "multi-line\ntext" (escaped newline inside a string) |
| Date | 2026-09-18 | "2026-09-18" (string) |
| Datetime | 2026-09-18 14:30:00 | "2026-09-18T14:30:00Z" (string) |
| Binary | not representable | "base64:..." (string) |
| Boolean | TRUE / FALSE | true / false (boolean) |
| JSON | the whole JSON value as-is (its own quotes stay) | nested object or array, kept as structure |
Dialect differences
Both TSV and JSON are file formats, so what differs below is how each one chooses to represent a value.
| Property | in TSV | in JSON |
|---|---|---|
| identifiers | Rarely used, which is exactly why tabs in data break it | Double quotes; backslash escapes |
| dates | Conventional text: 2026-09-18 or 2026-09-18 14:30:00 | No date type: dates arrive as strings and the reader must p... |
| binary | Not supported - must be encoded | Not supported natively - base64 inside a string |
| separator | Tab | 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 | Flat table, optional header row | Nested objects and arrays |
| ceiling | No formal limit | Whole document is usually parsed into memory |
Convert TSV to JSON the easy way
Use the TSV to JSON converter — an offline desktop app for Windows, macOS and Linux. Nothing to upload, large files and batch runs supported (free trial).
New to the format? Read what a TSV file is (and how it differs from CSV).
