CSV and Excel serve different needs
CSV is ideal for moving raw data between systems. Converting CSV to XLSX makes the same table easier to open, share, filter, and continue working with in Excel, Numbers, or Google Sheets.
Free online CSV to Excel
Convert CSV to Excel Online — Free CSV to XLSX
Turn a CSV file into an Excel (.xlsx) workbook. Confirm the detected encoding and delimiter while keeping every CSV field as text.
Drop a file here
Auto-detect the format, preview your table, and download the converted file.
Files are processed locally in your browser.
A fast, private CSV to Excel converter
Open messy CSV files as clean Excel spreadsheets, no upload required.
Auto delimiter & encoding
Comma, semicolon, and tab separators and the character encoding are detected for you — including UTF-8 and GBK.
Preserves text values
Leading zeros, long IDs, phone numbers, and date-like values stay as text instead of being auto-converted.
Client-side & private
Your CSV is parsed locally in your browser and never sent to a server.
Convert a CSV file to Excel without changing your data
CSV stores plain rows and columns, while an Excel XLSX workbook adds a structured spreadsheet format. This converter creates a ready-to-use Excel file while protecting values that spreadsheet apps often change automatically.
Keep leading zeros and long numbers
Phone numbers, postal codes, order IDs, and date-like values are written as text so the Excel file does not silently remove zeros, round digits, or change their format.
Handle delimiters and text encoding
The converter detects comma, semicolon, and tab delimiters plus common encodings such as UTF-8, GBK, and Big5. You can review the detected settings before downloading the XLSX file.
How to convert CSV to Excel
Three steps, fully in your browser.
01
Upload your CSV
Drag and drop a .csv file, or click to choose one.
02
Preview the table
Check that rows and columns are split correctly in the preview.
03
Download Excel
Download a standard .xlsx file, ready to open in Excel, Numbers, or Google Sheets.
Related conversions
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CSV to Excel — FAQ
Is this CSV to Excel converter free?
Yes. It is completely free and runs in your browser with no sign-up required.
Which CSV delimiters are supported?
Comma, semicolon, and tab-separated files are detected automatically, so most CSV exports just work.
Will non-English characters display correctly?
Yes. The character encoding is auto-detected (UTF-8, GBK, Big5, and more), so accented and non-Latin text is decoded correctly.
Is my data uploaded?
No. The CSV is parsed locally in your browser and never sent to a server.
Can I convert CSV to Excel without losing leading zeros?
Yes. CSV fields are written to the XLSX workbook as text, preserving leading zeros in phone numbers, postal codes, account numbers, and other identifiers.
What is the difference between CSV and Excel?
CSV is a plain-text table with values separated by delimiters. Excel XLSX is a workbook format that is easier to browse, filter, share, and edit in spreadsheet applications.
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