CSV to Excel
Turn a CSV into a real .xlsx workbook — free, in your browser
100% private — Files are converted right in your browser and never uploaded to any server.
How it works
- 1
Drop in your CSV file.
- 2
Choose the delimiter your CSV actually uses.
- 3
Click Convert and download a ready-to-open .xlsx file.
A CSV opened in Excel is already corrupted
Quoted fields parsed correctly
Fields wrapped in quotes keep their commas and line breaks — a name like “Smith, John” stays one cell. The RFC 4180-style parser also handles escaped double quotes inside quoted text.
Delimiter that matches your CSV
Tell the tool whether your file uses comma, semicolon or tab separation before converting, so every column lands in the right spreadsheet cell instead of splitting mid-field.
UTF-8 text survives
Files are read as UTF-8, so accented letters, Chinese characters, Japanese kana and Cyrillic text keep their original forms. Windows CRLF and classic Mac CR line endings are normalized during parsing.
Cell types, leading zeros and BOM
- Excel auto-mangles on open: 001 becomes 1, long IDs become scientific notation. Building a real xlsx avoids all of it.
- Values are written as typed cells — numbers numeric, everything else text — nothing mutates later.
- The generated workbook keeps one sheet per source file when batching several CSVs.
Frequently asked questions
Will quoted fields with commas inside them work?⌄
Yes — the parser understands quoted fields (e.g. "Smith, John") and doesn't split on a delimiter that's inside quotes.
What if my CSV uses semicolons instead of commas?⌄
Pick "Semicolon" from the delimiter dropdown before converting — common in several European locales' Excel exports.
Is my file uploaded?⌄
No — parsing and the .xlsx file itself are both built entirely in your browser. Your CSV never leaves your device.
Does it preserve number/date formatting?⌄
Values are written as plain text/numbers; special formatting (currency, dates) isn't inferred — reapply formatting in Excel if you need it.
Related tools
What Is a CSV to Excel Converter?
A CSV to Excel converter takes a plain-text CSV file and rebuilds it as a real .xlsx workbook that opens natively in Excel, Google Sheets, or Apple Numbers. CSV is everywhere — bank statements, CRM exports, product catalogs, survey results — but opening one directly in a spreadsheet app often garbles columns, especially when fields contain commas or line breaks hidden inside quotes. This tool parses those files properly, so every column lands where it belongs. It is aimed at anyone who works with exported data: office workers, marketers, accountants, and developers cleaning up data dumps. Whether the export comes from an online shop, a survey tool, or a legacy database, you end up with a workbook you can actually work with.
What this tool can do
- ✅ Parse quoted fields and escaped quotes correctly, following RFC 4180 rules
- ✅ Handle commas, semicolons, and line breaks that appear inside quoted fields
- ✅ Let you choose comma, semicolon, or tab as the delimiter your file uses
- ✅ Produce a genuine .xlsx workbook readable by Excel, Google Sheets, and Numbers
- ✅ Work entirely in your browser — nothing is ever uploaded
- ✅ Run free, with no account and no file-size limits
When you would use it
- 📤 Exporting a contact list from a CRM or email tool and opening it in Excel without broken columns
- 💳 Converting a bank or card statement CSV into a properly formatted workbook
- 📦 Turning a product catalog or inventory export into a spreadsheet you can filter and sort
- 🧹 Cleaning up messy exports from legacy systems where fields are wrapped in quotes
Privacy is absolute: the conversion runs locally in your browser and your file never leaves your device. The one limitation to know is that CSV carries data only — no formulas, colors, or formatting — so the resulting workbook contains plain values, exactly what your source file had to offer.