Skip to content
ToolQivo

CSV to Excel Converter

Make a real .xlsx from CSV — typed columns, frozen header, filters, no import wizard.

Converters Reviews Free · no sign-up

Drop a CSV file here, or click to choose one

Converted on your device — the file is never uploaded

Preview 
The sheet appears here

Quick Tool Overview

The CSV to Excel Converter builds a real .xlsx, .xls or .ods workbook from CSV, typing numbers and dates properly, keeping leading zeros as text, and freezing and filtering the header row.

What it does
Builds an Excel workbook from CSV
You give it
CSV, TSV or any delimited text
You get back
A formatted .xlsx, .xls or .ods file
Best for
Sending data to people who work in Excel
Converters Free, unlimited use No sign-up Runs in your browser

About the CSV to Excel Converter

Opening a CSV in Excel is not the same as having an Excel file. Double-click one and Excel guesses: it turns 0044 into 44, reads 03/04 as a date in whichever order your region prefers, splits on the wrong character, and leaves you with a sheet of text that will not add up.

This builds a genuine workbook instead. The delimiter is detected, numbers become numbers, ISO dates become real Excel dates, and anything with a leading zero stays text so phone numbers, postcodes and invoice references survive. The header row is frozen with an autofilter, and column widths are set from the content so nothing shows as ####. Download as .xlsx, legacy .xls or OpenDocument .ods. The file is built in your browser, so the data never leaves your machine.

Key features of the CSV to Excel Converter

Leading zeros survive

Phone numbers, postcodes and reference codes stay text, so Excel cannot eat the zeros.

Real dates and numbers

ISO dates become Excel dates and numbers become numbers, so totals and sorting work.

Ready to use

The header row is frozen with an autofilter and columns are sized to their content.

Three formats

Modern .xlsx, legacy .xls, or OpenDocument .ods for LibreOffice.

Any delimiter in

Comma, semicolon, tab or pipe is detected, with proper handling of quoted fields.

How to use the CSV to Excel Converter

  1. 1

    Paste or drop your CSV

    Any delimiter — comma, semicolon, tab or pipe — is detected for you.

  2. 2

    Name the sheet

    Give the tab a name, and pick .xlsx, .xls or .ods.

  3. 3

    Choose how values are read

    Detect numbers and dates, or keep every cell as text when the data is full of codes.

  4. 4

    Download the workbook

    The file opens straight into Excel, LibreOffice or Google Sheets.

Frequently asked questions

Yes. A value such as 0044 or 007 is written as text, so Excel cannot strip the zeros. That is the single most common thing lost when a CSV is opened directly.

Reviews of the CSV to Excel Converter

What people who use the CSV to Excel Converter think of it. Reviews come from visitors and are posted as written.

No ratings yet

Yours would be the first.

  • 5 0 reviews rated 5 stars
  • 4 0 reviews rated 4 stars
  • 3 0 reviews rated 3 stars
  • 2 0 reviews rated 2 stars
  • 1 0 reviews rated 1 star

Write a review

Used this tool? Your rating helps the next person decide.

Your rating

Plain text only — links, email addresses and HTML are not accepted. Your name and review are shown publicly; nothing else is collected. See the privacy policy.

0 reviews

Newest first

No reviews yet

Be the first to rate the CSV to Excel Converter. It takes half a minute and no account.

Write the first review

More converters