Convert Apple Numbers spreadsheets to Excel XLSX format. Share your spreadsheets cross-platform with Excel users. Free online.
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XLSX is Excel's modern format — preserves formulas, formatting, multiple sheets, charts. Convert to XLSX when the recipient will interact with the data in Excel or Google Sheets (pivot tables, financial modelling, forecast workbooks). Overkill for one-off tabular data — CSV is lighter and more portable.
A spreadsheet conversion moves cells, sheets, and values from one container to another. Knowing what each format keeps — and what it drops — saves a lot of "where did my formulas go" surprises.
Drop the NUMBERS file above or click to browse. Free-tier uploads are capped at 10 MB — comfortably enough for tens of thousands of rows; Pro handles files up to 1 GB. The filename is preserved and the new extension is appended automatically.
Cell values, columns, and rows are read from the NUMBERS and written into the XLSX structure. When both formats are spreadsheet-native (XLSX, XLS, ODS), formatting, multiple sheets, and formulas are preserved. When the target is CSV — a plain-text grid — the converter exports the values as clean, comma-separated rows that any tool can import.
Your XLSX file is ready in seconds. Open it and confirm the columns line up and numbers kept their type. Both the NUMBERS you uploaded and the XLSX output are permanently deleted from our servers within 30 minutes.
Native spreadsheet formats (XLSX, XLS, ODS) store a workbook: multiple sheets, cell formatting, formulas, charts, and data types all live inside one file. CSV stores exactly one thing — a single grid of raw values as plain text. That difference decides what survives the trip.
Converting between two native formats preserves nearly everything. Converting to CSV deliberately flattens the workbook to its data: one sheet, no formulas (their results are kept, not the formulas themselves), no colours or merged cells. That's not a bug — it's exactly why CSV is the universal format for moving data between systems.
=SUM(A1:A9) exports as the computed number, not the formula. Keep the native NUMBERS as your working copy if you still need to recalculate.Real reasons people run this conversion — grounded in specific problems, not vague benefits.
Most databases, CRMs, and web apps accept XLSX as their import format but reject native workbooks. Converting your NUMBERS to XLSX turns a spreadsheet into something a bulk-import tool can actually read, row by row.
A legacy XLS, an Apple Numbers export, or an ODS from LibreOffice doesn't always open cleanly everywhere. Converting to XLSX gets the data into a format the recipient's tool handles without formatting errors or "file corrupt" warnings.
Python, R, and command-line tools love plain, predictable input. Converting NUMBERS to XLSX gives a script a clean grid to parse — no proprietary container to decode, no surprise sheets, just the values.
Native workbooks carry formatting, charts, and metadata that inflate size. If all you need is the data, converting NUMBERS to XLSX can cut the file down dramatically — handy for email limits, uploads, or version control.
Accounting platforms, payroll systems, and analytics tools often publish an exact template format for uploads. If they require XLSX and your export is NUMBERS, this conversion is the step between "ready" and "rejected."
When data arrives as a mix of XLS, XLSX, and ODS from different sources, analysis is a headache. Converting everything to a single XLSX format first means one consistent input — and you can batch the whole folder in one pass.
Every conversion happens on TLS-encrypted uploads, on isolated per-request workers, with both the source and the result auto-deleted within 30 minutes. No ads, no watermarks on paid tiers, no data mined for training.
Numbers is Apple's spreadsheet format, part of the iWork suite for macOS and iOS. Numbers files use a ZIP-based package structure containing protocol buffer data, images, and resources. Unlike traditional grid-based spreadsheets, Numbers uses a canvas-based approach where multiple tables, charts, and images can be placed freely on each sheet.
Numbers is exclusively available on Apple devices and iCloud.com, making it inaccessible to Windows, Android, and Linux users. The format supports formulas, charts, conditional highlighting, interactive sorting, and real-time collaboration through iCloud. For sharing data with non-Apple users or importing into business tools, converting Numbers files to XLSX or CSV is the recommended approach.
Quick answers about compatibility, quality, metadata handling, and the most common reasons to convert NUMBERS files to XLSX.
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