Convert CSV to Excel Online

Convert Comma-Separated Values (.csv) files to Microsoft Excel (.xlsx) format online for free. Fast, secure, and no sign-up required. Your files are automatically deleted within 1 hour.

Free online csv to excel converter — no software needed. Instantly change, transform, and export your files in seconds.

Drag & drop your file here

or browse to select — accepts .csv (max 10MB)

How to Convert CSV to Excel Online

1. Upload Your File

Select or drag your .csv file into the converter

2. Convert Instantly

Your file is converted from .csv to .xlsx in seconds

3. Download Result

Download your converted .xlsx file to any device

Best Free CSV to Excel Converter

Lightning Fast Conversion

Convert .csv to .xlsx in seconds. No waiting, no queues — instant processing.

100% Secure & Private

All files are encrypted in transit via HTTPS and auto-deleted within 1 hour. Your data stays private.

Works on Any Device

Browser-based converter — works on Windows, Mac, Linux, iOS, Android, and Chromebook. No installation needed.

No Sign-Up Required

Start converting immediately. No registration, no email, no watermarks on your converted files.

When to Convert CSV to Excel

CSV to Excel for Business

Professionals frequently need to convert csv files to excel format for reports, presentations, and document sharing. Our converter preserves formatting and layout perfectly.

Student & Academic Use

Students and researchers can quickly convert csv to excel for assignments, thesis papers, and academic submissions that require a specific file format.

CSV to Excel for Personal Use

Whether you're organizing personal documents or sharing files with friends and family, converting csv to excel has never been easier with our free online tool.

Cross-Platform Compatibility

Need your csv file to work on a different device or operating system? Convert it to excel to ensure compatibility across Windows, Mac, iOS, Android, and Linux.

CSV vs Excel — Why Convert?

CSV (CSV)

Standard CSV file format
Widely used across platforms
CSV files may have specific features
May require specific software to open

XLSX (Excel)

Excel format for broader compatibility
Easy to share and distribute
Supported by many applications
Ideal for your target workflow

CSV to Excel — Frequently Asked Questions

Is CSV to Excel conversion free?

Yes! Reformat offers free CSV to Excel conversion. Free users get 3 conversions per day. Upgrade to Pro for unlimited conversions.

How do I convert .csv to .xlsx?

Simply upload your CSV file, click Convert, and download your Excel spreadsheet. The entire process takes just seconds.

What is the maximum file size?

Free users can convert files up to 10MB. Pro users get up to 100MB, and Business users get up to 500MB.

Is my file safe?

Absolutely. All files are processed securely and automatically deleted from our servers within 1 hour. We never access or share your data.

Can I convert multiple files at once?

With a Pro or Business account you can batch convert multiple files. Free users can convert one file at a time.

How do I convert CSV to Excel?

Simply upload your csv file to our converter, click "Convert", and download your excel file. The entire process takes just a few seconds and works directly in your browser.

Is the CSV to Excel converter free?

Yes! Our csv to excel converter is completely free. Free users get 3 conversions per day. Upgrade to Pro for unlimited conversions and larger file support.

Can I convert CSV to Excel without installing software?

Absolutely. Our csv to excel converter works 100% online in your web browser. No software downloads, no plugins, no registration required.

Is it safe to convert CSV to Excel online?

Yes. All files are encrypted during transfer using HTTPS, processed securely on our servers, and automatically deleted within 1 hour. We never access, read, or share your data.

What is the maximum file size for CSV to Excel conversion?

Free users can convert files up to 10MB. Pro users can convert files up to 100MB, and Business users up to 500MB.

Does the csv to excel converter preserve formatting?

Yes, our converter is designed to preserve the original formatting, layout, images, tables, and text styling as accurately as possible during the conversion.

Can I convert multiple csv files to excel at once?

Pro and Business accounts support batch conversion, allowing you to convert multiple csv files to excel simultaneously. Free users can convert one file at a time.

What devices support the CSV to Excel converter?

Our converter works on all modern devices and operating systems — Windows, Mac, Linux, iOS, Android, and Chromebook. Any device with a web browser will work.

How long does CSV to Excel conversion take?

Most conversions complete in under 10 seconds. Larger or more complex files may take slightly longer, but our converter is optimized for speed.

What's the difference between CSV and XLSX files?

CSV (CSV) and XLSX (Excel) are different file formats with different features and compatibility. Converting between them allows you to use the best format for your specific needs.

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