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PaperStack/Excel → CSV Online Free

Convert XLSX to CSV

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How to use Excel → CSV?

  1. Click “Select file” (or drag & drop) to add your file.
  2. Adjust settings if needed.
  3. Process and download the result.

FAQs

No. PaperStack tools run in your browser and process files locally on your device.
Yes. PaperStack tools are free to use and don’t require sign-up.
Yes. Processing runs locally in your browser on your device; files are not uploaded to PaperStack for processing or stored on our servers.

Blogs

Featured
How to Use Excel → CSV - Free Online Tool

Excel → CSV is a free online PaperStack tool for csv & data. Export an Excel file to CSV for imports, scripts, and other systems.…

Complete Guide to CSV & Data Tools - View, Convert & Edit
CSV files are how CRMs, banks, forms, and scripts exchange tables. They look simple until Excel mangles encoding, an importer rejects a workbook, or a 40,000-ro…
How to Use CSV Viewer - Free Online Tool
CSV Viewer is a free online PaperStack tool for csv & data. Open a CSV in a readable table without Excel.…
How to Use CSV → Excel - Free Online Tool
CSV → Excel is a free online PaperStack tool for csv & data. Turn a CSV into a real Excel workbook (.xlsx).…
How to Use JSON ↔ CSV - Free Online Tool
JSON ↔ CSV is a free online PaperStack tool for csv & data. Convert JSON to CSV (and back) without writing a script.…
How to Use Dummy CSV - Free Online Tool
Dummy CSV is a free online PaperStack tool for csv & data. Generate a dummy CSV with any column and row count in your browser — no signup, no upload.…
How to Use Table Filter - Free Online Tool
Table Filter is a free online PaperStack tool for csv & data. Keep only the CSV rows that match a column value.…

Built for every tool

Why use PaperStack?

The same benefits apply to every tool—including Excel → CSV.

  • Secure & private

    Your files are processed in your browser on your device—not sent to our servers for processing or kept on our systems. Sensitive documents stay under your control.

  • 100% free

    No hidden fees, no premium tiers, and no usage limits. Use PaperStack for personal or business work—no account required.

  • Fast processing

    Tasks run locally in your browser so you get results quickly—often in seconds—without waiting on a remote queue, even for larger files your device can handle.

  • Works everywhere

    No software to install. Open PaperStack in any modern browser on Windows, Mac, Linux, iOS, or Android and use the tools you need.

CSV & Data

Other tools

Same privacy-first workflow — every tool runs in your browser.

View all

CSV Viewer

View CSV data in a table

CSV → Excel

Convert CSV to XLSX

JSON ↔ CSV

Convert between JSON and CSV

Dummy CSV

Generate a dummy CSV with any column and row count in your browser.

Table Filter

Use Table Filter

Column Sorter

Use Column Sorter

Duplicate Remover

Use Duplicate Remover

Data Formatter

Use Data Formatter

Privacy-first

Safe in our hands

PaperStack takes security very seriously. Remember that your files stay on your device—processing runs in your browser, and we don’t store your documents on our servers.

  • No cloud uploads

    Your document never leaves this device for processing.

  • Browser-only processing

    Merge, convert, and compress run locally in your tab.

  • Nothing stored on our servers

    We don’t keep copies of your files after you close the page.

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Merge PDF
Split PDF
Word to PDF
Compress
M

Merge PDF

PDF · 3 files

1d ago
W

Word to PDF

DOCX → PDF

2d ago
C

Compress PDF

2.4 MB → 410 KB

3d ago