Free online XLSX to NUMBERS converter

A spreadsheet must be converted when it needs native editing in Apple Numbers on a Mac, iPhone, or iPad, or when it must be shared with someone who uses Numbers. Importing an XLSX workbook creates a .numbers document, but complex Excel features require verification after conversion.

What the XLSX format is

XLSX is Microsoft Excel's Office Open XML spreadsheet format, introduced as the default Excel format in 2007. It is a ZIP-based package containing XML data for worksheets, formulas, formatting, charts, tables, images, and workbook settings.

Excel creates XLSX files by default, and LibreOffice Calc, Google Sheets exports, and many accounting, reporting, and data-analysis applications can also create them. XLSX is common in business reports, budgets, invoices, exported datasets, and Microsoft 365 file sharing.

What the NUMBERS format is

NUMBERS is the native spreadsheet format used by Apple Numbers. A modern .numbers file is a proprietary document package rather than a standardized interchange format. Numbers supports formulas, charts, images, text boxes, templates, and multiple independent tables positioned on a free-form canvas instead of requiring one continuous worksheet grid.

The format is designed for Numbers on macOS, iOS, and iPadOS, and it can also be edited in Numbers through iCloud.com. Its canvas and templates suit visually arranged budgets, schedules, invoices, and personal-finance documents. XLSX remains the safer sharing format when recipients may use Excel, LibreOffice, or Windows software.

Convert with Numbers on a Mac

1. Open Numbers and choose File → Open.
2. Select the source file, such as workbook.xlsx. Numbers imports the workbook and may display compatibility warnings.
3. Check worksheets, formulas, charts, tables, formatting, and print layout.
4. Choose File → Save. When Numbers asks for a format or filename, save the document with the .numbers extension. Use File → Duplicate or a copy if you need to preserve the imported version separately.

Keep the original XLSX unchanged. It provides a reference if formulas, layouts, or unsupported Excel features need to be restored.

Convert on an iPhone or iPad

1. Save the XLSX file to Files, iCloud Drive, Mail, or another app that supports file sharing.
2. Tap the file and select Numbers, or open Numbers and locate the file in its document browser.
3. Accept the import or conversion prompt.
4. Review the converted document, then use the document actions menu to rename it or move it in Files or iCloud Drive. Numbers saves the native document with a .numbers extension.

Convert with Numbers on iCloud.com

1. Sign in to iCloud.com with an Apple Account and open Numbers.
2. Upload workbook.xlsx to the Numbers document list.
3. Open the imported workbook and inspect the converted content.
4. Use the document menu's download option and select the Numbers format when a native copy is required.

Numbers through iCloud requires an Apple Account and an internet connection, and its browser interface may not expose every feature available in the Mac app.

Convert without installing software

You can use the built-in converter on 101convert.com: upload the XLSX file, choose NUMBERS as the output format, start the conversion, and download the resulting .numbers file. Do not upload confidential, personal, financial, or regulated data unless the service's privacy and retention terms meet your requirements.

Quality and compatibility limits

Basic cell values, formulas, worksheets, ordinary formatting, charts, and tables usually import successfully, but the result is not guaranteed to match Excel exactly. Inspect merged cells, conditional formatting, named ranges, data validation, print settings, pivot tables, chart series, and hidden content.

Excel VBA macros do not run in Numbers. Excel-only functions may be flagged, replaced, or calculate differently. Password protection, workbook permissions, external data connections, linked workbooks, specialized add-ins, and some advanced table or pivot features may not transfer. External links can also require relinking or produce stale values.

For documents that will return to Excel, retain the original XLSX and test an exported copy using File → Export To → Excel in Numbers. Windows recipients may need Numbers through iCloud or an exported .xlsx copy because .numbers is a proprietary Apple format with limited support outside the Numbers ecosystem.