Add your XLSM file
Drop one or more .xlsm files onto the converter above, or browse for them. They load into browser memory only — nothing is uploaded, so there is no size-based pricing and no server queue.
XLSM to CSV
Converting a .xlsm file to .csv extracts the document's content from its office package into a portable form. Free, private, and validated — the file never leaves your browser.
Private for supported formats — processed in your browser
Runs on your deviceConvert supported files
Drop XLSM files here
Batch files can each use a different output. Nothing uploads for local conversions.
Working inputs include camera RAW, browser-local audio/video, PDF, CBZ/CBR comics, office documents, ebooks, markup, 3D models, structured text, images, and archives.About converting Macro-enabled Excel workbook to CSV table
Converting a .xlsm file to .csv extracts the document's content from its office package into a portable form. An .xlsm file is a Microsoft Excel workbook that is allowed to carry VBA macros. The grid itself is stored exactly as in an .xlsx package — SpreadsheetML worksheets plus a shared-string table — with one extra part holding the compiled macro project.
A .csv file is a comma-separated values table: plain-text rows with commas between fields, optionally quoted. It is probably the most widely produced data format in existence, emitted by everything from banking portals to lab instruments. For this route the practical draw is supported by effectively every data tool ever written and human-readable and hand-editable in a pinch — balanced against no type information — Excel famously strips leading zeros and mangles dates on open, which is worth knowing before you commit a large batch.
Why convert XLSM to CSV?
The practical trigger for this conversion is usually a mismatch: with .xlsm, the most heavily abused document format in phishing campaigns. Switching to .csv buys you supported by effectively every data tool ever written, which is why it is the better fit for exports from databases, CRMs, and banking systems. Because the conversion runs locally, trying it costs nothing but a few seconds of compute on your own machine.
XLSM vs CSV at a glance
| Aspect | Macro-enabled Excel workbook (.xlsm) | CSV table (.csv) |
|---|---|---|
| Format type | Text-based — characters and structure, so there is no visual quality loss | Text-based — characters and structure, so there is no visual quality loss |
| How it stores data | same OOXML package as .xlsx: xl/worksheets/sheetN.xml, xl/sharedStrings.xml, styles, and a workbook relationship graph | fields containing commas, quotes, or newlines are wrapped in double quotes with embedded quotes doubled — the rule that breaks every naive split-on-comma parser |
| Strongest at | financial models and reporting workbooks with automated refresh or formatting | exports from databases, CRMs, and banking systems |
| Weak spot | the most heavily abused document format in phishing campaigns | no type information — Excel famously strips leading zeros and mangles dates on open |
Pick CSV as the output
Select .csv in the output menu next to each file. The menu only offers targets this engine can genuinely produce, so if CSV is selectable, the route is real and validated.
Convert on your device
Press Convert. The package is unzipped in memory and its XML content parsed locally; nothing is uploaded.
Verify and download
Each result is signature-checked before the download unlocks, so a failed encode can never masquerade as a valid CSV file. Outputs keep the original filename with the .csv extension.
XLSM to CSV questions, answered
Will converting XLSM to CSV lose quality?
There is no visual quality to lose — xlsm is text-oriented and csv is text-oriented, so the question is structural fidelity. Text, ordering, and basic structure are preserved; complex layout, embedded objects, and styling beyond the target's model are simplified.
Is it private to convert XLSM files here?
Yes — the .xlsm file is processed inside your browser tab and never uploaded. The package is unzipped in memory and its XML content parsed locally; nothing is uploaded. Close the tab and the file is gone from memory.
Where will the CSV file work?
Every spreadsheet, database, and programming language handles CSV, and browsers or text editors open it as plain text. The catch is dialect drift: delimiter, encoding, and quoting choices differ enough that robust importers always offer manual overrides.
Will the CSV file be bigger or smaller than my XLSM?
It depends on the content: fields containing commas, quotes, or newlines are wrapped in double quotes with embedded quotes doubled — the rule that breaks every naive split-on-comma parser. Convert one representative file first and compare before batch-processing a large set.
What happens to the metadata in my XLSM file?
In .xlsm, docProps/core.xml and docProps/app.xml carry author, dates, and the generating application; tabular exports such as CSV keep none of it. Re-encoding through the browser pipeline does not carry embedded metadata into the output, which doubles as a privacy scrub — check the exported file if you specifically need tags preserved.