CSV to XLSX Converter

CSV to XLSX Converter is a free online Spreadsheet Tools tool that paste CSV, TSV, semicolon or pipe text and download a real .xlsx — quotes, CRLF and UTF-8 handled, delimiters auto-sniffed (TAB ; , |) or set by hand, decimal commas preserved, nothing uploaded instantly in your browser. Paste your data, adjust the options and get the result in real time — no installation, no sign-up, and nothing is ever uploaded to a server.

How to use: CSV to XLSX Converter →

Description

Paste CSV, TSV, semicolon or pipe text and download a real .xlsx — quotes, CRLF and UTF-8 handled, delimiters auto-sniffed (TAB ; , |) or set by hand, decimal commas preserved, nothing uploaded.

  • Because everything is computed client-side, CSV to XLSX Converter is safe to use with sensitive data such as API keys, tokens or private logs.

How to use

Using CSV to XLSX Converter takes three steps:

  1. Paste your data into the input box (or load the example).
  2. Configure the options to match your target format or scenario.
  3. Copy, download or inspect the output — it updates live as you type.

Examples

These ready-made examples show typical inputs and the exact output CSV to XLSX Converter produces for them.

name,qty,price
widget,3,"12,50 €"
gadget,7,9.99

Paste CSV (or TSV / semicolon / pipe text) — the workbook is built locally with SheetJS; nothing is uploaded.

Use cases

Common situations where CSV to XLSX Converter helps:

  • Paste CSV, TSV, semicolon or pipe text and download a real .xlsx — quotes, CRLF and UTF-8 handled, delimiters auto-sniffed (TAB ; , |) or set by hand, decimal commas preserved, nothing uploaded.
  • Because everything is computed client-side, CSV to XLSX Converter is safe to use with sensitive data such as API keys, tokens or private logs.

FAQ

What is CSV to XLSX Converter?

CSV to XLSX Converter paste CSV, TSV, semicolon or pipe text and download a real .xlsx — quotes, CRLF and UTF-8 handled, delimiters auto-sniffed (TAB ; , |) or set by hand, decimal commas preserved, nothing uploaded. It runs entirely in your browser, so your data stays private.

Is CSV to XLSX Converter free to use?

Yes. CSV to XLSX Converter is free, unlimited and works without registration or installation.

Does my data get uploaded?

No. All processing happens locally in your browser; nothing is sent to any server.

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