Convert XLSX to CSV

Upload a file, confirm or change the source and target formats, then convert.

Drag & drop files here or browse. Max file size 100 MB for your account. Sign up or view pricing.

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Conversion results

How your files are processed

Files are uploaded and processed on our servers, then made available for download.

What this tool does

Office Open XML worksheet parts are parsed; cell values and types are serialized as plain UTF-8 row text.

Object graph features (pivot cache, rich formatting) are not carried in raw CSV text.

XLSX — XLSX: typed cells, shared strings, formulas, sheet relationships inside OLE ZIP parts.
CSV — CSV: delimiter-separated scalar rows; no formulas object—only serialized values as UTF-8 text.
Sheets — Multi-sheet workbooks collapse to flat text unless the export emits one CSV per sheet.

How to convert XLSX to CSV?

Choose file — upload a XLSX file that matches this page (allowed extensions apply).
Convert to CSV — lock the target format if needed, then start the job and wait for status updates.
Download — grab the finished file from your job link before the retention window ends.

Why convert XLSX to CSV?

XLSX may carry pivots and macros CSV cannot round-trip; CSV trades structure for ingest speed into databases.

CSV is the universal duct tape between spreadsheets and databases, even though it forgets formulas.

Typed binary workbooks catch formula errors early; plain CSV defers validation until import—choose based on whether downstream wants richness or frictionless piping.

Common reasons to convert XLSX to CSV

Import CSV into Airtable when sync accepts only CSV but partners send XLSX.
Upload CSV to BigQuery for dashboard SQL when extracts land as XLSX.
Open CSV in Google Sheets when budgets need comments trapped in XLSX mail.
Open CSV in Excel when vendor XLSX breaks macros until columns match templates.
Load CSV into Snowflake when nightly jobs expect CSV but finance emails XLSX.

Will converting XLSX to CSV affect quality or file size?

Cell values usually land as plain text rows.

Formulas, charts, and extra sheets may drop or split—reconcile totals before databases ingest the file.

XLSX vs CSV

XLSX (XLSX)

XLSX is Excel’s current workbook with sheets, formulas, charts, and tables. CSV flattens everything to plain rows for databases. ODS mirrors spreadsheets inside LibreOffice Calc.

CSV (CSV)

CSV is plain rows separated by commas (or localized delimiters) with no formulas or charts. Every analytics stack ingests it. It is the wrong choice when Excel logic must survive.

Workbook to CSV moves grids into Python jobs, git-friendly diffs, and Snowflake loads that ingest comma-separated rows.

Troubleshooting

Delimiters: comma vs semicolon vs tab must match the importer; locale changes decimal separators.
Formulas: CSV stores values; complex formulas, pivots, and charts usually drop on flatten export.
Sheet scope: multi-sheet workbooks may export one sheet or split files—confirm which sheet feeds the pipeline.
Types: dates and long integers can import as text—set column types after import.
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XLSX to CSV FAQ

CSV stores literal cell values; formulas evaluate once at export unless your pipeline preserves formula syntax separately. Rebuild logic in the destination workbook if needed.

Match what the importer documents—comma vs semicolon vs tab—and UTF-8 for accented characters. Misaligned delimiters shift columns.

CSV is single-table text; additional sheets export separately or flatten depending on exporter rules. Merge sheets manually if the job emitted only one file.

Row and column counts matter more than extensions. Wide CSV files or deeply nested JSON can take longer to parse than tiny configs.