How to use the CSV to Excel
- Paste the CSV or click Open file.
- Check the preview — the delimiter (comma, semicolon or tab) is detected automatically.
- Set the file and sheet name and click Download .xlsx.
Why convert CSV to Excel instead of just opening it?
Double-clicking a CSV lets Excel guess: in many European locales it expects semicolons, accented characters can turn into garbage without a UTF-8 BOM, ZIP codes like 02134 lose their leading zero, and long numbers become scientific notation. Converting to .xlsx first fixes the types once, so the file opens the same way on every computer.
The converter reads the CSV in your browser, keeps text as text and numbers as numbers, and writes a workbook with a bold, frozen header row. The tab-separated output can also be pasted straight into Excel or Google Sheets.
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Tools that pair well with the CSV to Excel
- JSON to Excel — Turn a JSON array into a real Excel workbook.
- Split CSV — Break a big CSV into smaller files — every 1,000 rows, into a set number of files, or one file per value of a column such as region or customer.
- Excel to JSON — Open an .xlsx workbook or paste cells straight from Excel or Google Sheets and get clean JSON.
- CSV & Excel to SQL — Paste CSV or Excel cells, or open an .xlsx file, and get ready-to-run CREATE TABLE and INSERT statements with correctly escaped values for your database.
Frequently asked questions
How do I convert CSV to Excel?
Paste the CSV or open the file, check the preview and click Download .xlsx. The delimiter and value types are detected automatically.
Will leading zeros be kept?
Yes. Values such as 02134 are stored as text, so the zero is not removed the way it is when Excel opens a CSV directly.
Is my CSV uploaded?
No. The conversion runs entirely in your browser.
Can I install CSV to Excel as a web app and use it offline?
Yes. CSV to Excel is an installable web app (PWA) — installed from your browser, not downloaded from an app store. Click Install app at the top of this page in Chrome or Edge (Windows, macOS, Linux, ChromeOS) or on Android, use Share → Add to Home Screen on iPhone and iPad, or File → Add to Dock in Safari 17+ on a Mac. It then opens in its own window with its own icon, and because it runs entirely in your browser it keeps working offline. Firefox on desktop can’t install web apps. How installing works.