Convert CSV to XLS Free — Online & Instant

Convert CSV to XLS — Free Online

Fast, secure, no software needed.

📁 Drag & drop your file here

or click to browse • Max 100MB

✅ Free • ⚡ Instant • 🔒 Secure • 💻 No install

How to Convert CSV to XLS

Converting .csv files to .xls is fast and simple with OpenAnyFile. CSV is a data format: CSV stores tabular data as comma-separated text values. XLS is a spreadsheet format: XLS is the legacy Microsoft Excel binary format.

Upload your .csv file to OpenAnyFile
Select XLS (.xls) as the target format
Click "Convert" and wait for processing
Download your converted .xls file

Why Convert CSV to XLS?

There are several reasons to convert from .csv to .xls:

Compatibility: .xls may be more widely supported by software and devices
File size: Converting between formats can reduce file size for easier sharing
Editing: XLS may offer better editing capabilities for your workflow
Sharing: Recipients may prefer .xls files for their daily use

About CSV Format

CSV stores tabular data as comma-separated text values. Category: Data. Extension: .csv. Created by: Various.

About XLS Format

XLS is the legacy Microsoft Excel binary format. Category: Spreadsheet. Extension: .xls. Created by: Microsoft.

Frequently Asked Questions

How do I convert .csv to .xls?

Upload your .csv file to OpenAnyFile, select XLS as the target, and download the converted file.

Is CSV to XLS conversion free?

OpenAnyFile offers free file analysis. Conversion may require a one-time payment depending on the file.

Will I lose quality converting .csv to .xls?

OpenAnyFile preserves maximum quality during conversion. Some format-specific features may not transfer between different file types.

Can I convert .xls back to .csv?

Yes, you can convert .xls to .csv using OpenAnyFile as well.