CSV Excel Converter

The file you drop sets the direction. A .csv becomes .xlsx; an .xlsx becomes CSV.

CSV Delimiter

Drop CSV file here or click to select

.csv,.tsv,.txt

How to Convert CSV to Excel and Excel to CSV Online

Upload Your CSV File

Drag and drop your CSV, TSV, or TXT file into the upload area, or click to browse your device. The converter accepts files of any size that your browser can handle.
Select the Correct Delimiter

Choose the delimiter that matches your file format. Comma is the default for most CSV files. European exports often use semicolons, while database exports may use tabs or pipes.
Preview and Verify Your Data

Review the data preview table to confirm that columns and rows are parsed correctly. If the data looks misaligned, switch to a different delimiter and the preview updates instantly.
Download the Excel File

Click the Download Excel button to generate and save your XLSX file. The conversion runs entirely in your browser, so no data is uploaded to any server.

Common Use Cases

Database Exports for Business Reporting

Database administrators and analysts frequently export query results as CSV. Converting to Excel lets you apply pivot tables, conditional formatting, and charts for stakeholder-ready reports without manual reformatting.

E-Commerce Product Catalog Management

Online store owners export product listings from platforms like Shopify or WooCommerce as CSV files. Converting to Excel makes it easier to bulk-edit prices, descriptions, and inventory counts using filters and formulas.

Financial Data Analysis and Reconciliation

Accountants and finance teams receive bank statements and transaction logs in CSV format. An Excel workbook enables VLOOKUP, SUMIF, and other functions critical for reconciliation and audit trails.

Research Data Preparation

Scientists and researchers collect survey responses or sensor readings as CSV. Converting to Excel allows them to create charts, apply statistical functions, and share formatted datasets with collaborators.

Why Use CSV to Excel Converter?

Excel provides powerful features for data analysis, formatting, and visualization that aren't available in plain CSV files. Converting CSV to Excel allows you to use formulas, charts, conditional formatting, and other Excel features. Our converter preserves your data structure and creates proper Excel workbooks.

CSV (Comma-Separated Values) is the most widely used plain-text format for tabular data exchange. While CSV files are lightweight and universally supported, they lack the formatting, formula support, and multi-sheet structure that modern spreadsheet workflows demand. this CSV to Excel converter bridges that gap by transforming your raw CSV data into a fully functional XLSX workbook directly inside your browser.

Unlike server-based converters, this tool processes everything client-side. Your files never leave your device, making it a safe choice for sensitive financial records, customer databases, and proprietary research data. The built-in data preview lets you verify column alignment before downloading, so you catch delimiter mismatches early. Need to go the other direction? Use the Excel to CSV converter to export spreadsheets back to plain text. If your workflow involves JSON, the CSV to JSON tool converts tabular data into structured JSON objects for API consumption.

Power users who handle CSV files regularly will also benefit from the CSV Viewer for quick inspection, the CSV Merger for combining multiple exports into one file, and the CSV Column Extractor for pulling out only the columns you need before converting. For full spreadsheet editing without leaving the browser, try the Spreadsheet Editor.

How it compares

Several online tools offer CSV to Excel conversion, but most require you to upload your file to a remote server, which raises privacy concerns for sensitive data. Paid desktop software like Microsoft Excel can open CSV files natively, yet it sometimes misinterprets delimiters, date formats, or character encoding without manual configuration. Google Sheets handles CSV imports well, but requires a Google account and an internet connection for cloud processing.

This converter stands apart by running entirely in the browser with zero server uploads, zero signups, and zero cost. You get instant conversion with a live data preview, delimiter auto-selection, and a clean XLSX output compatible with Excel, Google Sheets, and LibreOffice Calc. For teams handling confidential data, client-side processing eliminates the risk of data exposure during file transfer.

Tips for a Clean Conversion

Make sure your CSV file uses consistent delimiters throughout. Mixed delimiters cause columns to merge or split unexpectedly.
If your data contains commas inside quoted fields (e.g., addresses), the converter handles them correctly as long as standard CSV quoting rules are followed.
For very large files with hundreds of thousands of rows, close other browser tabs to free up memory before converting.
Check that date columns display correctly in the Excel output. Some date formats may need manual adjustment in Excel after conversion.
When working with non-English data that includes special characters, ensure your CSV is saved with UTF-8 encoding before uploading.

Frequently Asked Questions

Is my CSV file uploaded to a server?

No. All conversion happens entirely in your browser. Your files never leave your device, ensuring complete privacy.

What delimiter should I select?

Select the delimiter used in your CSV file. Comma is most common, but European files often use semicolon. If you see data in wrong columns, try a different delimiter.

Will formulas be preserved?

CSV files don't contain formulas - they only store raw data. The Excel file will contain your data as values, and you can add formulas after opening it in Excel.

What's the maximum file size?

Since processing happens in your browser, the limit depends on your device's memory. Most devices can handle files up to several hundred megabytes.

Can I open the file in Google Sheets?

Yes! The generated.xlsx file is compatible with Microsoft Excel, Google Sheets, LibreOffice Calc, and other spreadsheet applications.

Does the converter support TSV and other text formats?

Yes. You can upload.csv.tsv, and.txt files. Select the matching delimiter (tab for TSV) and the converter parses the data correctly.

Will special characters and accented letters survive the conversion?

Yes, as long as your CSV file is encoded in UTF-8. The converter preserves Unicode characters, accented letters, and symbols in the generated Excel file.

Can I convert multiple CSV files at once?

This tool converts one file at a time. If you need to combine multiple CSV files first, use the CSV Merger tool and then convert the merged result to Excel.

Is there a row or column limit?

The Excel XLSX format supports up to 1,048,576 rows and 16,384 columns. The practical limit depends on your browser's available memory, but most files convert without issues.

Do I need to install any software?

No installation is required. The converter runs entirely in your web browser on any operating system, including Windows, macOS, Linux, and Chromebook.

Is my Excel file uploaded to a server?

No. All conversion happens entirely in your browser using JavaScript. Your files never leave your device, ensuring complete privacy and security.

Can I convert multiple sheets at once?

Yes! If your Excel file has multiple sheets, you can preview each one and download them all as separate CSV files with a single click.

What delimiter options are available?

You can choose from comma (standard CSV), semicolon (common in Europe), tab (TSV format), or pipe delimiters depending on your needs.