Morfile
Nothing is uploaded: conversion happens on your device
Convert CSV to XLSX
No upload: your file is converted on your device. Included in Morfile Pro.
Converting CSV to XLSX is part of Morfile Pro
24-hour pass for €3.99 or lifetime access for €24.99, no automatic renewal. Conversion stays on your device, just like the free plan.
How to convert a CSV file to XLSX
- 1 Open the Morfile app and drop your CSV files.
- 2 Choose XLSX as the output format, then start the conversion.
- 3 Download your XLSX file, or a ZIP if you converted several.
Why convert a CSV file to XLSX?
A CSV keeps no formatting, no formulas and only one sheet.
An XLSX opens in Excel, Google Sheets and LibreOffice, with all its sheets.
What about quality?
All values are kept. To CSV, only the first sheet is exported (Morfile tells you); the separator can be adjusted.
Frequently asked questions
Is it free to convert a CSV file to XLSX?
This conversion is part of Morfile Pro: 24-hour pass for €3.99 or lifetime access for €24.99, no automatic renewal. JPG, PNG and WebP stay free.
Is my CSV file uploaded to a server?
No. Conversion happens in your browser, on your device. Turn off your Wi-Fi to check: it still works.
Does it work on iPhone and Android?
Yes, right in the browser. Install the app in one click to convert even offline.
Can I convert several CSV files at once?
Yes, with Morfile Pro: drop as many files as you like, you get a ZIP.