Extract any sheet from an Excel workbook as a clean CSV file — perfect for imports, databases, and developer tools. Converts in your browser. Free.
🔒 The workbook is read inside your browser only — nothing is uploaded.
CSV is the universal handshake between systems: database imports, email marketing platforms, accounting software, and developer scripts almost all prefer it over .xlsx. Exporting a specific sheet to CSV strips the formatting down to pure data — which is exactly what those systems want. The conversion is lossless for the data itself, and fields containing commas or quotes are escaped correctly so nothing breaks on import.
Reverse it with CSV to Excel, produce a shareable PDF with Excel to PDF, or reshape data for code with CSV to JSON.
The choice between keeping a file as Excel or exporting it to CSV comes down to who — or what — reads it next. A human who needs formulas, colours and charts wants the .xlsx. A system — your email platform's contact importer, an accounting package, a database load script, a developer's data pipeline — almost always wants CSV, because it's plain, predictable, and universally parseable. Exporting the exact sheet you need as CSV is the step that makes those imports work first time instead of throwing format errors.
A few practical habits make CSV exports painless. Keep one clean header row at the very top with short, clear column names and no merged cells above it, since importers read the first row as field names. Remove totals rows and stray notes that sit outside the data grid — they become malformed CSV lines. And if a column holds identifiers with leading zeros (postcodes, account numbers), be aware CSV stores them as written here but spreadsheet apps may strip them on re-open; format such columns as text before you rely on them downstream.
Is my file uploaded anywhere?
No — reading the workbook and writing the CSV both happen in your browser. Your data stays on your device.
Which sheet does it export?
Whichever you choose from the dropdown. CSV holds one sheet of data, so run it once per sheet you need.
Are commas inside cells handled correctly?
Yes — any cell containing a comma, quote or line break is wrapped in quotes per the CSV standard, so it imports cleanly everywhere.
What happens to formulas?
Their calculated values are exported (not the formula text) — which is what downstream systems expect.
Will dates stay readable?
Dates export as text as they appear in the sheet. If a target system needs a specific date format, set it in Excel before converting.