Want to convert CSV file to HTML file?
Try Withdata Data File Converter, a desktop CSV to HTML converter for Windows, MacOS, and Linux, Convert CSV to HTML table, 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 CSV file(s) to online services.
- Support Windows, Linux, and macOS.
Download Withdata DataFileConverter 
Convert CSV to HTML table
Choose CSV file -> Set HTML file -> Convert CSV to HTML table
Click “Start a New Convert” at task dialog.
Select From “File” “CSV” To “File” “Html”.
1. Open source CSV file.
Support large CSV file (big than 4GB).
Source CSV file’s content is like this:
2. Config target HTML file.
3. Set rows options.
4. Convert CSV to HTML table.
After converting, you can view the output HTML file.
More about CSV to HTML converter
Download Withdata DataFileConverter
See also:
CSV → HTML reference
Type mapping
| Value kind | in CSV | in HTML |
|---|---|---|
| Int | 1234 | <td>1234</td> |
| Bigint | 9007199254740993 | <td>9007199254740993</td> |
| Decimal | 1234.56 | <td>1234.56</td> |
| Float | 1.234e+10 | <td>1.234e+10</td> |
| Text | quoted only when it contains a comma or a quote | <td>text</td> |
| Long text | must be quoted; line breaks inside force multi-line records | <td>multi-line text</td> (entities for & <) |
| Date | 2026-09-18 | <td>2026-09-18</td> |
| Datetime | 2026-09-18 14:30:00 | <td>2026-09-18 14:30:00</td> |
| Binary | not representable - base64 or hex string | not representable in a cell |
| Boolean | TRUE / FALSE, or 1 / 0 depending on the writer | <td>true</td> |
| JSON | the whole JSON value quoted, with internal quotes doubled | <td>{"a":1}</td> (quotes escaped) |
Dialect differences
Both CSV and HTML are file formats, so what differs below is how each one chooses to represent a value.
| Property | in CSV | in HTML |
|---|---|---|
| identifiers | Double quotes; a literal quote is doubled ("" ) | Attribute values in quotes; entities for reserved characters |
| dates | Conventional text: 2026-09-18 or 2026-09-18 14:30:00 | Whatever text was rendered |
| binary | Not supported | data: URIs inside src attributes |
| separator | Comma "," | Tags, not delimiters |
| encoding | No declaration - UTF-8 works only with a BOM | Declared in a meta charset tag or the HTTP header |
| typing | None - every field is text | None |
| shape | Flat table, optional header row | Free form; tables are row/column structures inside markup |
| ceiling | No formal limit; row count bounded by memory | No formal limit |
Convert CSV to HTML the easy way
Use the CSV to HTML converter — an offline desktop app for Windows, macOS and Linux. Nothing to upload, large files and batch runs supported (free trial).
