mtools.lol

CSV to Excel

Turn a CSV into a tidy Excel file with a bold header, filters and fitted columns.

How it works

  1. 1Upload a CSV file.
  2. 2Press Convert.
  3. 3Download the .xlsx.

Features

  • Detects commas, semicolons, tabs and pipes.
  • Numbers become numbers; ids with leading zeros stay as text.
  • Bold, frozen header row with filters.
  • Columns sized to fit.
  • Processed on our server and deleted right after.

Frequently asked questions

Why do accents look wrong when I open a CSV in Excel?

Excel often guesses the wrong text encoding. Converting to .xlsx fixes that for good.

Are decimal commas handled?

Yes, for semicolon- or tab-separated files (the usual European format).

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