Excel XLSX to CSV

Online Excel to CSV Converter

Convert XLSX to CSV online with our free tool. Enjoy quick and automated XLSX to CSV conversions, customizable mapping, and step-by-step guidance.

The conversion workspace is built for private Excel XLSX handling, with processing completed in your browser.

Conversion focus

Schema-aware handling helps keep columns and nested fields understandable.

Need Custom Conversion?

Excel workbooks are read from a file only (no text paste).

Excel workbook

Drop an .xlsx file here, or click to browse

Choose a worksheet after upload. Max 25 MB.

Need Sample Files?

Pick which sheet to convert. Changing the sheet reloads column detection.

XLSX is parsed into rows and columns first. These settings control that extracted table and how the output CSV is written—not the source file syntax.

Output CSV delimiter

Map each VCF field to a normalized table column. Use Include to choose output lines; Check all / Uncheck all sit under the mapping table.

# VCF Field Mapping Include
Provide input above to load mapping options.
Include column:

Column names and types feed SQL generation (same rules as the CSV tool).

# Field Name Data Type Max Size Key Include Trim NULL empty
Provide input to load columns.

What this conversion is for

Pick it when CSV is the contract your partner named—even if Excel XLSX was easier to edit. You get delimiter-separated rows ideal for Excel, data lakes, or quick diffs in Git.

Use this output next

CSV → JSON

APIs, fixtures, and app payloads.

CSV → XLSX

Editing, filters, and spreadsheet review.

CSV → SQL

Database import and staging loads.

CSV → XML

Integrations and schema-friendly trees.

From Excel XLSX to CSV in four moves

Load the Excel XLSX workbook (file tab only) and pick the active sheet.

Confirm header row and that typed columns (dates, IDs) look right in the grid.

Use mapping or options on this page so each Excel XLSX field lands in the correct CSV shape.

Convert, then copy or download UTF-8 CSV for spreadsheets or pipelines.

Before you convert

  • Merged cells and hidden rows may not map 1:1 to flat output.
  • CSV loses rich typing—dates become text unless the next tool re-coerces.
  • Keep a copy of the original Excel XLSX as the audit trail after you ship CSV.

Choose the right output

When CSV is the right output

  • You are promoting Excel XLSX into CSV because the next hop names that format in its contract or runbook.
  • Downstream asked explicitly for CSV while editors still live in Excel XLSX.
  • You need a deterministic export for CI, legal, or partner review—not a live sync.
  • The receiving system has a documented CSV ingest path (template, parser, or app import).

When another format fits better

  • Programs expect nested objects or arrays—use JSON or XML instead of flattening too early.
  • You need executable INSERT/MERGE with keys—generate SQL rather than stopping at CSV.
  • Recipients want typed Excel features immediately—ship XLSX, not plain CSV.
  • Always-on replication belongs in APIs or streams, not repeated manual CSV drops.

Continue with other formats

XLSX → PDF

Print-ready snapshots instead of CSV.

XLSX → XML

Schema-heavy integrations instead of CSV.

XLSX → JSON

APIs, fixtures, and browser-native trees instead of CSV.

XLSX → VCF

Contact bundles for phones and mail instead of CSV.

XLSX → HTML

CMS and static web tables instead of CSV.

Reviewed Excel XLSX → CSV notes

Overview, mapping, pitfalls, and FAQs from the same bundle as other ConversionTab converters—open the sections you need.

Excel XLSX to CSV overview

Excel to CSV Converter Overview

The Excel to CSV Converter helps you transform Excel into CSV effortlessly, designed for tabular data.

Perfect for spreadsheet tasks, this tool ensures secure, fast, and precise results for data processing.

To begin, upload your Excel file, choose CSV as the output format, and download your converted file instantly.

Once processed, you can copy the CSV output using the copy icon or download it as a file by entering a file name.

Input format notes

About Excel XLSX as the source

Excel XLSX is parsed as structured input for this page. Use complete rows, valid syntax, and consistent field names so the converter can preserve the important data when creating CSV.

Output format notes

About CSV as the output

CSV is generated from the parsed Excel XLSX data. Review the output before importing it into another system, especially when the destination expects strict columns, dates, or contact fields.

Conversion guide

How to Convert Excel to CSV

Step 1: Upload Your Excel File

Click on the 'Drop/Browse File' feature to upload your Excel file to ConversionTab.

Step 2: Customize Settings (Optional)

If you wish to customize the delimiter for your CSV file, select your preferred option from the available choices, including Comma, Tab, Semi Colon, Space, Colon, or Bar.

Step 3: Select Specific Sheet (If Applicable)

If your Excel file contains multiple sheets and you want to convert a specific sheet, utilize the dropdown menu provided under the file uploader to select the desired sheet.

Step 4: Initiate Conversion

Once your file is uploaded and any necessary settings are adjusted, click the 'Convert' button to start the conversion process.

Step 5: Access Converted Data

After conversion, you'll have two options to access your CSV data:

Copy: Copy the generated CSV data for immediate use.

Download: Download the CSV file to your device, optionally specifying a custom file name.

By following these steps, you can efficiently convert your Excel files to CSV format using ConversionTab, ensuring smooth data exchange and compatibility across various platforms and applications.

Questions before converting

Excel to CSV FAQs

1. How does the Excel to CSV conversion work on ConversionTab?

The Excel to CSV conversion feature on ConversionTab allows users to convert their Excel data into CSV (Comma-Separated Values) format, which is widely used for data exchange between different applications. Users can upload their Excel file using the 'File' input option.

2. What are the input options for Excel data?

Similar to other conversion features, users can upload their Excel file through the 'Drop/Browse File' feature on ConversionTab, providing flexibility and ease of use.

3. Can I customize the delimiter for CSV files?

Yes, ConversionTab offers users the option to customize the delimiter for CSV files. Users can choose from various separators, including Comma, Tab, Semi Colon (;), Space, Colon (:), and Bar (|), depending on their preference or compatibility requirements.

4. How can I select a specific sheet from an Excel file that contains multiple sheets?

ConversionTab provides a dropdown menu under the file uploader, allowing users to select the desired sheet from an Excel file that contains multiple sheets. By default, the first sheet is selected. Once selected, the CSV data corresponding to the chosen sheet will be displayed in the textarea, and users can download the CSV file accordingly.

5. How do I get the CSV output?

Once the mapping and settings are complete, users can initiate the conversion process by clicking the 'Convert' button. The resulting CSV data is displayed, providing users with two options:

  • Copy: Users can copy the generated CSV data for use elsewhere.
  • Download: Users can download the CSV file, with the option to specify a custom file name if desired.

This flexibility ensures that users can choose the most suitable method for accessing their converted data.

6. How secure is the conversion process on ConversionTab?

The conversion process on ConversionTab is highly secure. All conversions, including Excel to CSV, are performed entirely on the client side, ensuring maximum data security and privacy. Your Excel files are processed locally within your browser, and no data is transmitted to external servers during the conversion process. Additionally, ConversionTab employs industry-standard encryption protocols and follows best practices to safeguard your data. Rest assured that your data remains confidential and protected throughout the conversion process.

7. Is there a file size limit for Excel files?

Yes, ConversionTab imposes a file size limit of 25 MB for Excel files. Larger files may take longer to process and may not be supported due to client-side constraints. It's recommended to use smaller file sizes for quicker conversion times.

8. Can I convert multiple Excel files continuously?

Yes, you can convert multiple Excel files continuously without any restrictions. ConversionTab allows you to convert as many files as needed, providing convenience and flexibility for your data conversion tasks.

9. How can I contact support for further assistance?

If you require further assistance or have any questions not covered in this FAQ, you can contact our support team through the 'Contact Us' page. We are here to help!

Explore more conversions

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Config lists and maps materialized into flat columns.

XML → CSV

Tree feeds normalized so each row is one record in a grid.

Exports & delivery

XLSX → SQL

Executable staging text.