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Numbers to XLSX

Open an Apple Numbers file and save it as Excel .xlsx — no Mac required.

10 / 10 free files today

Related tools

All Spreadsheets tools →
ODS to XLSXConvert a LibreOffice Calc .ods sheet to Excel .xlsx without installing anything.XLS to XLSXConvert a legacy .xls workbook to the modern .xlsx format, in your browser.XLSB to XLSXTurn a binary .xlsb workbook into a standard .xlsx file any program can open.XLSM to XLSXSave a macro-enabled .xlsm workbook as a plain .xlsx, leaving the macros behind.XLSX to ODSConvert an Excel workbook to OpenDocument .ods for LibreOffice Calc.CSV to ExcelConvert a CSV file (or pasted CSV) into a real .xlsx spreadsheet.Extract spreadsheet formulasList every formula in a workbook with its sheet and cell, to audit or document it. Reads Excel (XLSX, XLSM), OpenDocument (ODS) and Apple Numbers, in any language — a French SI() or a German WENN() comes out as written. XLS and XLSB carry formulas that this reader cannot always surface, and CSV or TSV hold none by design: they store results, never formulas.Excel to CSVConvert an .xlsx or .xls sheet to CSV, pick which sheet.

Numbers to XLSX is free to use as often as you like, directly from this page. It sits under Spreadsheets in our catalogue, alongside ODS to XLSX and XLS to XLSX.

How to use it

  1. Open the tool — no signup or install needed.
  2. Enter your input or adjust the available options.
  3. Get your result instantly, then copy or download it.

Frequently asked questions

What is Numbers to XLSX?

Open an Apple Numbers file and save it as Excel .xlsx — no Mac required.

When would I actually use this?

Getting a table out of a workbook and into something else — JSON for an API, CSV for an import, HTML for a page — opening a file whose software you do not have, and cleaning a sheet before you hand it on.

What is the most common mistake?

Expecting the formula to survive the trip. A converted file carries the last value the spreadsheet computed, not the calculation behind it — and a workbook written by a program can carry the formula with no cached value at all, which most readers discard along with the cell.

How is Numbers to XLSX different from ODS to XLSX?

They sit next to each other but answer different questions. ODS to XLSX: convert a LibreOffice Calc .ods sheet to Excel .xlsx without installing anything. Pick whichever matches what you're starting from — both are free.

Is there a tool for the next step?

XLS to XLSX is the closest one after this: Convert a legacy .xls workbook to the modern .xlsx format, in your browser.

What else is worth having open alongside it?

XLSB to XLSX and XLSM to XLSX — they come up in the same task often enough to be worth a second tab.

Where do the figures come from?

Nothing leaves the browser. An .xlsx and an .ods are both zipped XML, read here against their published specifications. Dates are the fragile part — a spreadsheet date is a number counted from an epoch the workbook itself declares, so the same 45000 is two different days depending on a flag most files never show you.

Further reading

All guides →
ExplainerThe .ods File That Is Valid, and That Your Reader RefusesOpenDocument makes styles.xml optional. Several readers demand it and reject the whole document without it — "Cannot find file styles.xml in zip" on a file that is not broken.ExplainerThe Workbook with Twenty-Three Formulas That Reported NoneA cell can hold a formula and no cached result. A reader that skips empty cells throws the formula away with them — and says the file has none. One parsing option separates the two cases.ComparisonXLS, XLSX, XLSM and XLSB: Which Is Which, and Which You WantFour extensions, three of them the same box with different lids. Rename an XLSX to .zip and it opens — that single fact explains the whole family, and explains why XLS, which does not, is the one still causing trouble.ExplainerWhy Your CSV Breaks Accents and Dates in ExcelThree completely different faults hide behind the same sentence. One is the encoding, one is the separator, one is Excel guessing at types while it opens the file — and the fix for each is different. Here is how to tell them apart in five seconds.ExplainerConverting Formulas to Values Keeps the Cached Answer, Not the CalculationA spreadsheet file stores both the formula and the last answer Excel computed. Stripping the formula leaves the stored answer — and leaves a blank wherever the file never carried one.How-toOne File per Tab, and What a Split Leaves BehindSplitting a workbook writes one .xlsx per sheet, named after the tab. It carries the values across and not the formulas — which is the right default when the point is to send one department its own tab.