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.
An Excel to CSV converter reads one sheet from an .xlsx or .xls workbook and writes it out as a CSV (comma-separated values) file — the plain, universal format that databases, email marketing platforms, accounting software, and developer scripts almost always expect for importing data. It strips away everything that isn't raw data: formatting, colours, and formulas are reduced to exactly the rows and columns a system needs, with the calculated result of any formula exported instead of the formula text itself.
A CSV file is about as simple as data formats get — each line is a row, each value is separated by a comma, with quotes added automatically around any value that itself contains a comma, quote mark, or line break. That simplicity is exactly why it's the most widely accepted import format across systems that would otherwise choke on Excel's richer .xlsx structure.
| CSV | Excel (.xlsx) | |
|---|---|---|
| Best for | Database imports, scripts, marketing platforms | Humans who need formatting, formulas, charts |
| Formulas | Exported as calculated values only | Preserved and editable |
| Multiple sheets | One flat table per file | Multiple sheets in one workbook |
| Universally importable | Yes — plain text, no proprietary format | Requires spreadsheet software to read fully |
| Who | Common Use |
|---|---|
| 🧑💻 Developers & data teams | Feed a clean CSV into a database import, script, or data pipeline |
| 📧 Marketers | Export a contact list sheet as CSV for an email platform's bulk import |
| 📊 Accountants & bookkeepers | Convert a transactions sheet to CSV for accounting software that requires it |
| 🏢 Business & admin | Turn a report or order-list sheet into CSV for another system to consume |
| 🎓 Students & researchers | Export a data sheet as CSV for analysis in Python, R, or statistical software |
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.
What exactly is a CSV file?
A CSV (comma-separated values) file is a plain text file where each line is a row and each value is separated by a comma — no formatting, no formulas, just data. It's the most universally supported way to move tabular data between different systems.
Can I export multiple sheets into one CSV at once?
No — a CSV can only hold one flat table, so this tool exports one sheet at a time. If your workbook has several sheets you need, pick each one from the dropdown and convert them individually.
Will leading zeros in ID numbers or postcodes be preserved?
The CSV stores exactly what's in the cell as text, so leading zeros are preserved. If you later re-open the CSV by double-clicking it in Excel, Excel may strip them again at that step — format the column as Text if you need them to stick.