Convert CSV to Excel Online

Turn a CSV, TSV or delimited text file into a real Excel .xlsx workbook, with the separator worked out for you. Leading zeros stay put, and the file is converted privately in your browser.

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Drop a file here

CSV or TSV file · read on your device, never uploaded

The delimiter is detected automatically, including semicolons and tabs.

Processed entirely on your device. Nothing was uploaded.

How to Convert CSV to Excel XLSX

Banks, websites and apps hand you data as CSV: a statement download, an order export, a list of form responses. Double-clicking it can squash every row into column A, drop the zeros off the front of PIN codes and account numbers, or turn codes like 1-2 into dates.

This converter reads the CSV itself, works out whether it is separated by commas, semicolons or tabs, and writes a proper .xlsx file with one value per cell. Press Convert to Excel and a workbook named after the CSV arrives, ready to sort, filter and share.

Everything is done in your browser. Statement exports and customer lists are not copied to an online converter, and you do not need Excel installed to create the file.

No software to install Free Works on any device

Make an XLSX from Your CSV in Four Steps

Four quick steps, then an optional check.

1

1. Open the CSV to Excel tool

You are on it now. Any recent browser runs it, on a desktop, a tablet or a handset, with no Office licence required.
2

2. Choose your CSV or TSV

Tap the pick button, or drop the file into the dashed area. Files ending in .csv, .tsv and .txt are accepted, as long as the text is laid out as rows with a separator.
3

3. Let the separator be detected

There is nothing to set. The tool recognises commas, semicolons and tabs on its own, so European and tab-separated exports come out in proper columns.

CommaSemicolonTab
4

4. Press Convert to Excel

A workbook with one sheet downloads as an .xlsx named after your CSV, and a line of text confirms how many rows were written.
5

5. Open and check the workbook

Open the file in Excel, Google Sheets or LibreOffice Calc. Scroll to the last row and glance across a few columns to confirm every value landed in the right place.

No .csv file to hand? Download a sample CSV file (635 B) and try it.

Try it now

What is the Difference Between CSV and XLSX?

A CSV is plain text: one line per row, with commas or another character between the values. It has no idea what a column width, bold heading or number format is, and every program has to guess how to read it.

An XLSX is Excel’s own workbook format, a packaged file that stores each cell separately along with sheets and formatting. Converting gives you a file that opens identically everywhere, with every value in its own cell, instead of relying on each program’s guesswork.

Excel Workbook

.XLSX

Each value in its own cell, opening the same way on every computer.

CSVs people convert

Bank statement downloads
Sales and order exports
Form and survey responses
Database and app exports
Contact list exports
Analytics reports
Exam and attendance exports

Why Convert CSV to XLSX?

A CSV that looks fine on your screen can fall apart on someone else’s, depending on their region settings. An XLSX fixes the columns in place, keeps codes intact and gives your recipient a file they can work with immediately.

“Send a workbook, not a puzzle.”

One value per cell, guaranteed
Semicolon files split correctly
Ready to sort and filter
No import wizard needed

Leading zeros kept
Opens the same everywhere
Better for emailing to others
Exports kept private

Popular Uses for CSV to Excel

Everyday CSV files that are nicer as workbooks.

Bank statements Turn a downloaded statement CSV into a workbook for budgeting or loan paperwork.
Marketplace orders Convert order and payment reports from Amazon, Flipkart or your own shop.
Google Forms responses Make a clean XLSX from exported responses to share with a team.
Contact exports Open phone or email contact exports as a tidy sheet you can edit.
Analytics data Turn website or ad reports into workbooks for charts and pivots.
Database dumps Give a colleague query results as an Excel file instead of raw text.
Student data Convert attendance and marks exports from school software.
Log and sensor data Open tab-separated logs as a workbook for a quick look.

CSV to Excel Features

It handles the awkward parts of CSV so you do not have to.

Automatic

Separator detection

The tool spots whether commas, semicolons or tabs divide the values, so there is no import wizard.

Accuracy

Codes stay as typed

PIN codes, account numbers and IDs such as 007 keep their leading zeros in the workbook.

Layout

Quoted cells respected

Values wrapped in quotes, such as "Kumar, S", stay together in one cell even with commas inside.

Clean

Trailing blanks trimmed

Blank lines and unused columns trailing after your data are left out of the workbook.

Input

CSV, TSV and TXT

Accepts the delimited text files that systems commonly export.

Accepted:

.csv
.tsv
.txt

Output

Standard XLSX

The download is a normal Excel workbook that also opens in Google Sheets, Numbers and LibreOffice.

Why Use ToolXkit for CSV to Excel?

Your export stays yours

Bank and customer CSVs are converted locally in the tab. They are never posted to a web server.

CSV to Excel for Everyday Data

Account holders

Open bank statement downloads as workbooks.

Online sellers

Review order and settlement reports in Excel.

Accountants

Receive client exports in a format that is easy to check.

Teachers

Turn school software exports into editable registers.

Marketers and analysts

Convert ad and web reports for charts.

Developers

Hand non-technical colleagues data they can open.

When to Turn CSV into XLSX

Convert your CSV when you are:

Seeing every row squashed into column A
Losing leading zeros on double-click
Sending data to someone who uses Excel
Working with a bank statement download
Reviewing marketplace order reports
Without Excel on the current device
Sharing form responses with a team
Preparing data for charts

Tips for Smooth CSV Conversion

Open the CSV in Notepad first if you are unsure what it contains. One header line and consistent separators give the cleanest result.
Numbers arrive exactly as written in the CSV. If Excel flags them with a small green corner mark, use Convert to Number on that column before totalling.
Mixed separators in one file confuse any detector. Export the CSV again from its source if columns look wrong.
Add filters and freeze the header row in Excel after converting, so a long statement is easy to browse.
Keep the original CSV. Some upload screens need it back in CSV form later.
Need several CSVs in one workbook? Use our Merge Excel tool to combine them afterwards.

Frequently Asked Questions

Answers to common questions about this tool.

How do I convert a CSV file to Excel?

Choose the CSV on this page and press Convert to Excel. The separator is detected automatically, and a matching .xlsx downloads straight away, ready for any spreadsheet program.

Why does my CSV open in one column in Excel?

The file probably uses semicolons or tabs, and Excel expected commas because of your region settings. Converting it here detects the real separator, so the XLSX opens with each value in its own column.

How do I keep leading zeros when opening a CSV?

Convert it here rather than double-clicking it. Codes such as 007, PIN codes and account numbers are kept exactly as written in the CSV, instead of being turned into numbers that lose their zeros.

Can I convert CSV to XLSX without Excel?

Yes. The workbook is created in your browser, so Excel does not need to be installed. You can make the .xlsx on a Chromebook, a phone or any shared computer.

Is my CSV file uploaded to a website?

It is not. The CSV is read and the workbook written inside this browser tab, and our servers never see either file, which is why bank statements and customer exports are safe to convert here.

Can I convert a TSV or tab-separated text file?

Yes. Files ending .tsv and .txt are accepted, and tab separators are detected automatically, just like commas and semicolons. Each tab-divided value lands in its own column of the new workbook.

Why do numbers show a green triangle in Excel?

Every value is carried over character for character, which protects codes and leading zeros, so Excel may regard some number columns as text. Highlight the column, open the little warning menu, and pick the option to turn text into numbers before totalling.

Can I merge several CSV files into one Excel workbook?

This page converts one CSV at a time into a workbook with one sheet. To combine several files, use our Merge Excel tool, which can stack them into one sheet or give each file its own sheet.

Is there a row limit?

We do not set one. Large CSVs of many thousands of rows convert fine on a computer, and only available memory holds you back. Excel itself holds at most about a million rows per sheet.

Will commas inside a value break the columns?

Not if the value is in double quotes, as CSV exports normally do. "Kumar, S" stays in one cell. If a system wrote commas without quotes, the columns will shift, and the file needs exporting again.

Does it work on my phone?

Yes. On Android or iPhone, choose the CSV from your downloads and press Convert to Excel. Any spreadsheet app on the phone can then open the new .xlsx.

Do I need Excel installed to use CSV to Excel?

No. The spreadsheet is read by the page itself, so it works on computers without Microsoft Office, and on phones and tablets too. The result downloads in the format you picked.

Can CSV to Excel handle files with thousands of rows?

Usually, yes. Sheets with thousands of rows work well on most devices. Very large files depend on your computer’s memory, so a laptop copes better than an older phone.

Will formulas survive the conversion?

Formats like CSV, JSON and XML store values, not formulas, so a converted file holds the calculated results. Keep your original workbook if you will need the formulas again.

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