Convert ET to XLSX Online

ET’s Native Workbook Is Not an Excel Extension

An .et file is the native workbook format used by WPS Spreadsheets. It can hold worksheets, cells, formulas, charts, print settings, names, and other workbook objects; it is not an Excel workbook whose filename has merely been shortened. This matters when a file arrives from WPS Office and the next program is Microsoft Excel: Excel expects an XLSX package, not an ET document with a different label. Renaming budget.et to budget.xlsx changes no bytes inside the file, so it can lead to an unreadable-file or repair message rather than a usable workbook.

WPS itself documents a useful clue about the relationship. Its Spreadsheet settings can use Microsoft Excel 2007/2010 Workbook (*.xlsx) as the default save format, and WPS says its million-row mode supports 1,048,576 rows and 16,384 columns. Those are the familiar Excel worksheet limits, with the final column named XFD. ET-to-XLSX conversion is therefore most useful when the receiving work needs an editable Excel-family workbook, not simply a picture of the figures. Start with a copy of the ET source, identify the worksheets that contain important formulas or linked data, and use a real export that reads ET and writes XLSX.

An XLSX Export Builds a New OOXML Package

XLSX is an Office Open XML workbook. In practical terms, it is a ZIP package holding separate XML parts for worksheets, styles, shared text, relationships, and optional items such as drawings. A converter must create those parts and connect them correctly; this is why an export is meaningful but an extension change is not. Cells and ordinary formatting often have a straightforward destination, while features that depend on a particular application need more care. Formula text may transfer, but the displayed value can change when the receiving application recalculates it. A formula calling an external workbook, an add-in function, or a function implemented differently cannot be made equivalent simply by placing it in an XML cell.

The Excel limits are not a promise that every ET workbook fits. A source that uses more than 1,048,576 rows in one sheet cannot become one ordinary XLSX worksheet without splitting or removing rows. Likewise, anything beyond XFD has no place in the target sheet. Excel’s published limit is exactly 16,384 columns, not a vague “around ten thousand.” Before converting a large ET file, use the source program’s last-used-cell view and count the actual data range. Also note whether formulas refer to other files, whether charts use named ranges, and whether a sheet is hidden. These are concrete things to compare after export, rather than relying on the first visible tab.

The Exchange Benefits Have Sharp Boundaries

• Editable delivery: XLSX gives the recipient cells, sheets, and formula text to work with; it is appropriate when the figures must still be changed.
• Known worksheet ceiling: the target has a documented maximum of 1,048,576 rows by 16,384 columns, so oversized source sheets need a decision before export.
• Formula results can move: formulas may be recalculated by the receiving spreadsheet program, especially where external links, add-ins, dates, or named ranges are involved.
• Macros are not made safe by XLSX: XLSX is not Excel’s macro-enabled workbook type. Do not assume a macro-bearing ET workbook will deliver runnable VBA code in a normal XLSX file.
• Layout is separate from data: print areas, repeating titles, chart labels, conditional formatting, and page breaks should be reviewed even when the values look correct.

The useful distinction is between information that can be represented as ordinary worksheet cells and behavior that depends on the source application. An export can create a very good exchange copy without proving that every tool button or automation behaves the same way. Treat the XLSX as a new delivery file: open it in the program that will actually receive it, calculate once, and compare the important totals with the ET source. That is a short, repeatable test with a clear answer.

Where the Converted Workbook Can Be Opened and Edited

WPS Office is available for Windows, macOS, Linux, Android, and iOS, but the fact that WPS can open a workbook does not mean every platform offers the same editing surface. For example, Microsoft’s mobile Excel support table lists .xlsx as openable and editable on supported mobile versions, while an older .xls file may be read-only. That makes XLSX a much clearer exchange target than ET for a person using an Excel mobile app. It is still wise to open the finished file in the exact target program and version, because a desktop sheet can include functions or objects that are not practical to edit on a phone.

The source should normally be opened in WPS Spreadsheets first, because it owns the ET structure. Save or export a copy as XLSX, then test that copy in Excel, Excel for the web, or the named receiving app. Look for a yellow repair notice, a request to update links, missing sheet tabs, or a changed page count in print preview. If the receiving environment is Excel for Android or iPhone, test there as well; a successful desktop open does not prove the mobile user can edit the same workbook in the same way.

Repair Warnings and Changed Results Need a Cell-Level Check

A repair message after opening an exported workbook is evidence that the receiving program removed or rebuilt something; it is not a harmless message to click past. Keep both files, make a second export from the unchanged ET source, and inspect the repair log if Excel provides one. Then compare named sheets, the last populated row, key formulas, and the values that feed reports or charts. If a formula was expected to pull from another workbook, check whether the target now shows an old cached value, a missing-link message, or an error. The right fix depends on the object: reconnect or remove a broken external link, recreate a chart whose series changed, or replace a source-only function with a formula supported by the receiving application.

WPS’s own help on print setup gives another useful check: a print area can be set explicitly, and rows or columns can be selected to repeat on each printed page. Those settings may be invisible while checking values on screen. Open Print Preview in the XLSX copy, inspect the first and final pages, and make sure the expected title row repeats. A data table can be mathematically correct while a report still loses its rightmost columns or header on paper. This is a conversion problem with a visible cause, not a reason to repeat a vague “try again” instruction.

ET and XLSX Facts Worth Testing Before Handover

A compact acceptance test catches more than a visual scan. Put a leading-zero code, a long identifier, a date, a decimal result, a formula total, a non-ASCII name, and an ordinary text note in known cells. Record their addresses in the ET source, then test those same addresses after the XLSX copy is opened and recalculated. Compare the last used row and column as well. This test is useful because it exposes type changes and omissions in the actual workbook rather than guessing from a converter’s success message.

ET-to-XLSX Questions People Actually Ask

Can I open an ET file directly in Excel?
Do not rely on that. ET is WPS’s native workbook format, whereas Excel expects formats such as XLSX. Open the ET in WPS Spreadsheets and export or save a copy as XLSX.

Why does Excel say it repaired the converted workbook?
Excel found a structure or workbook object it could not use as written. Save the repair log if one appears, keep the ET original, and compare sheets, formulas, charts, names, and links before delivering the repaired file.

Will formulas stay exactly the same?
The formula text may transfer, but the result must be checked after the target program calculates it. Test totals, date formulas, named ranges, external links, and any formula that uses an add-in or a newer function.

What happens when the ET sheet exceeds Excel’s row limit?
An XLSX worksheet has no room beyond 1,048,576 rows or 16,384 columns. Split the data into separate sheets or files before treating the result as complete.

Should the ET file be deleted after export?
No. Keep the unchanged ET file until the XLSX has been opened in the recipient’s application, recalculated, and checked for values, sheet tabs, charts, and page layout.