Want to convert each sheet data in an Excel file to a separate CSV file at one time?
Try Withdata Data File Converter, an Excel to CSV converter for Windows, MacOS, and Linux, Batch convert Excel sheets 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 Excel file(s) to online services.
Download Withdata DataFileConverter 
Convert each sheet data in an Excel file to a separate CSV file
Select source Excel file -> Set target CSV file -> Convert Excel sheet to CSV file
Click “Start a New Convert” at task dialog.
then show the wizard.
Select From “File” “Excel” To “Files” “CSV”.
1. Open a source Excel file, select sheets to convert to CSV files.
2. Config target CSV files.
3. Summary.
List selected sheets.
4. Convert each Excel sheet to a separate CSV file.
After converting, you can view output CSV files.
Convert each Excel sheet to a separate CSV file in command line
Save “SQL table to CSV” session, then you can:
- Convert each Excel sheet to a separate CSV file in Windows command line.
- Convert each Excel sheet to a separate CSV file in Linux command line.
- Convert each Excel sheet to a separate CSV file in macOS command line.
Set scheduled tasks for converting each Excel sheet data to a separate CSV file
You can schedule and automate this Excel sheet to CSV converting task by:
- Save session and create .bat (Windows) or .sh (Linux/macOS) file for “Excel sheet to CSV” conversion.
- Set scheduled task for “Excel sheet to CSV” conversion.
FAQ
More about Withdata DataFileConverter – Excel sheets to CSV converter
Download Withdata DataFileConverter
See Video: Convert each worksheet in an Excel file to a separate CSV file at one time
EXCEL → CSV reference
Type mapping
| Value kind | in EXCEL | in CSV |
|---|---|---|
| Int | 1234 (a real numeric cell) | 1234 |
| Bigint | 9007199254740993 (exact only while the cell stays text) | 9007199254740993 |
| Decimal | 1234.56 (numeric cell, format controls the displayed decimals) | 1234.56 |
| Float | 1.234E+10 (numeric cell) | 1.234e+10 |
| Text | text cell; leading zeros survive only if the column is text | quoted only when it contains a comma or a quote |
| Long text | text cell; wraps inside the cell rather than the row | must be quoted; line breaks inside force multi-line records |
| Date | a serial number plus a date cell format | 2026-09-18 |
| Datetime | a serial number plus a date-time cell format | 2026-09-18 14:30:00 |
| Binary | not representable as data | not representable - base64 or hex string |
| Boolean | TRUE / FALSE (a real boolean cell) | TRUE / FALSE, or 1 / 0 depending on the writer |
| JSON | a text cell; the quotes are part of the value | the whole JSON value quoted, with internal quotes doubled |
Dialect differences
Both EXCEL and CSV are file formats, so what differs below is how each one chooses to represent a value.
| Property | in EXCEL | in CSV |
|---|---|---|
| identifiers | Not applicable; a cell holds exactly one value | Double quotes; a literal quote is doubled ("" ) |
| dates | Stored as a serial number; only the cell format makes it lo... | Conventional text: 2026-09-18 or 2026-09-18 14:30:00 |
| binary | Only as text or an embedded object, not as a data column | Not supported |
| separator | Cells, not delimiters | Comma "," |
| encoding | UTF-8 internally, declared in the package | No declaration - UTF-8 works only with a BOM |
| typing | Real cell types: text, number, date, boolean, error | None - every field is text |
| shape | Multiple sheets, each a flat grid | Flat table, optional header row |
| ceiling | 1,048,576 rows x 16,384 columns per sheet; 255 sheets per w... | No formal limit; row count bounded by memory |
Data File Converter without the manual work
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