CSV to Excel Converter

Convert CSV to Excel online quickly and reliably. This tool lets you upload one or multiple CSV files and download them as proper XLSX files — no software needed, no login required. It's the simplest way to convert CSV to Excel directly in your browser.

Whether you're working with exported reports, ad data, or any tabular dataset, you can upload your CSV files and get clean, ready-to-use Excel files in seconds.

Need to combine files after converting? You can also merge Excel files using our Excel Merger.

CSV files are great for raw data exports, but Excel's XLSX format gives you far more — multiple sheets, formatting, formulas, filters, and better compatibility with most business tools.

Converting CSV to Excel lets you open your data in a proper spreadsheet environment, apply formatting, share it more professionally, and avoid the delimiter confusion that plain CSV files sometimes cause.

If you work with data exports from Google Ads, CRMs, or analytics platforms, converting to XLSX is often the first step before cleaning or analysis.

Upload your CSV files, choose your delimiter and options, then click Convert. Each CSV becomes its own Excel workbook with all data preserved on the first sheet.

If you upload a single CSV, you get a single XLSX file. If you upload multiple files, they are each converted individually and packaged into a ZIP file for a single download.

You can also merge CSV files first if you want to combine them before converting.

Not all CSV files use a comma. This converter supports comma, semicolon, tab, and pipe-delimited files. By default, the tool auto-detects the delimiter in each file so you don't have to worry about it.

If your data is coming from a European locale or a specific export tool that uses semicolons, you can override the auto-detection and set the delimiter manually.

You can upload as many CSV files as you need in one go. Each file is converted to its own XLSX file, and all outputs are packaged into a single ZIP for easy downloading.

This is especially useful when you receive monthly exports, multi-account reports, or any set of files that need to be converted in bulk without opening Excel manually.

Unlike most online converters, this tool runs entirely in your browser. Your CSV files are never uploaded, never stored, and never processed on an external server.

Conversion happens instantly on your device, which means faster results and complete privacy — even for sensitive business data or client files.

Google Ads & PPC exports — Convert campaign or search term reports from CSV to XLSX for cleaner analysis

CRM data — Open lead or contact exports in Excel without formatting issues

Analytics reports — Convert GA4, Shopify, or other platform exports to Excel

Finance & accounting — Convert transaction exports into structured Excel workbooks

Yes. This tool runs entirely in your browser, so your files are never uploaded or stored on any server.

Your data stays on your device, making it safe for sensitive spreadsheets, business reports, and private files.

Can I convert multiple CSV files to Excel at once?
Yes. Select multiple CSV files and the tool will convert each one to its own XLSX file and package them all into a single ZIP download.

Does the converter support different delimiters like semicolons or tabs?
Yes. The tool auto-detects the delimiter in each CSV file, including commas, semicolons, and tabs. You can also set it manually in the options.

Is this CSV to Excel converter really free?
Yes. You can convert CSV files to XLSX without limits or signup. The tool is completely free.

Are my CSV files uploaded to a server?
No. All conversion happens directly in your browser. Your files are never sent to any server.

Do I need to install anything to convert CSV to Excel?
No. Everything runs directly in your browser — no software, no plugins, no installs required.

What is the best way to convert CSV to Excel online?
The easiest way is to use a browser-based tool like this one. Upload your CSV files, choose your options, and download the converted XLSX files instantly.