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.
Why people choose us
Private by design
Your input is processed securely and never sold. Client-side tools never leave your browser at all.
Instant & free
No installs, no waiting. Results in seconds, right in your browser, on any device.
Free forever
No sign-up, no watermarks, no limits. All client-side tools are free to use as much as you like.
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.