Always Free · No sign-up · 100% Private

Free Apple Numbers to CSV / Excel Converter

Drop in your .numbers file for instant, local format conversion. Get clean, perfectly structured CSVs ready for Excel, Windows, or any database—without the typical Mac-to-PC formatting errors.

Safe & Private: Files are processed 100% locally in your browser.

Your financial data never leaves your computer. No uploads. No tracking. No server-side storage.

Instant format alignment: we handle date formats (dd/mm/yyyy) and numerical precision for seamless accounting imports.

Files are processed locally in your browser — never uploaded to our servers. 100% Offline Capable — try turning off your Wi-Fi.
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100% Offline Capable — turn off your Wi-Fi and try it; conversion still works because your data never leaves this screen.

Why Choose Our Local Converter?

  • 100% Privacy

    Files are processed locally in your browser. No data is ever uploaded to a server.

  • GDPR Compliant

    Zero risk of data breaches as no information leaves your computer.

  • Instant Conversion

    No waiting for cloud uploads — your files are ready in seconds.

  • Work Smarter

    Eliminate manual formatting errors and spend more time on high-value billable tasks.

How to Convert Your Mac Files Safely

A fast, secure workflow for professionals handling sensitive client data.

  1. 1. Export Your Data. Export your native files locally from your Mac system (e.g., Apple Numbers).
  2. 2. Process 100% Locally. Drop your file into the secure converter above. The logic executes entirely inside your browser memory — zero data is ever uploaded to external servers.
  3. 3. Align Formats Seamlessly. Instantly fix delimiters and encoding issues, creating a clean CSV that opens perfectly in Microsoft Excel or Windows environments.
  4. 4. Save Time & Work Smarter. Stop wrestling with spreadsheet formatting errors. Get your files ready in seconds so you can move on to high-value billable work.

100% Local Processing

All parsing happens in your browser via WebAssembly. No file leaves your device, ever.

Enterprise-Grade Privacy

Sensitive client details and financial data stay exclusively on your machine — critical for GDPR-compliant workflows. With no cloud uploads, your data never leaves your computer.

Accountant-Tested Output

Verified compatible with Xero, Sage, QuickBooks Online and FreeAgent CSV imports.

Frequently Asked Questions

Why convert .numbers files instead of just using Excel?

Clients often send financial data directly from their Mac, iPad, or iPhone as a proprietary .numbers file, which Windows and Excel cannot open. Instead of wasting time emailing back and forth asking them to resend a CSV, this tool lets you instantly convert it yourself. It makes the data universally portable for bookkeeping, financial analysis, and general database imports.

Is this safe for confidential business data?

Yes. Because conversion happens locally in your browser, sensitive figures, client details, and financial data never leave your device. Nothing is sent to our servers, logged, or stored.

From the makers of this tool

Need a better way to handle Accounting Journals?

Try our Journal Generator — one-click automation to Xero, Sage, QuickBooks & FreeAgent, built specifically for UK accountants.

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