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XLS to CSV Converter — Fast & Free | 1converter
  1. Home
  2. XLS to CSV

XLS to CSV Converter — Fast & Free Online

XLS to CSV converter with advanced quality settings. Fine-tune your output for perfect results every time. XLS (XLS (Excel 97-2003)) is microsoft excel's legacy binary spreadsheet format.

FromXLSToCSV
Convert XLS to CSV Now
100% Free
Secure & Private
Fast Conversion
1CONVERTER Document Team - 1CONVERTER Team Logo
1CONVERTER Document Team·Document Processing Experts·Updated Mar 15, 2026
Official

How to Convert XLS to CSV

Follow these simple steps to convert your XLS files to CSV format in seconds

1

Step 1

Upload your XLS file

2

Step 2

Choose CSV as output format

3

Step 3

Adjust quality and conversion settings if needed

Visual Conversion Preview

xls

Source file

Size:2.4 MB
Format:XLS

Converting...

~5s

csv

Output file

Size:1.2 MB

Why Convert XLS to CSV?

Discover the advantages of converting your XLS files to CSV format

Charts and graphs preserved in CSV

CSV provides universal compatibility

Preserve formulas in CSV output

Popular Use Cases

See how professionals use our XLS to CSV converter in real-world scenarios

1

XLS files for analytics

Convert XLS to CSV for this purpose quickly and easily.

2

Data analysis results in CSV

Convert XLS to CSV for this purpose quickly and easily.

Related Conversions

Explore other popular file conversion options

XLSNUMBERS

Convert XLS to NUMBERS

Online XLS to NUMBERS converter. Fast, free, and secure conversion.

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XLSX

Frequently Asked Questions

Everything you need to know about converting XLS to CSV

Yes, our basic XLS to CSV conversion is completely free. No registration required. Premium plans offer larger file sizes and batch processing.
Yes! Our batch conversion feature lets you upload and convert multiple XLS files to CSV simultaneously, saving you significant time.
Most XLS to CSV conversions complete in under 30 seconds. Larger or more complex files may take 1-2 minutes depending on file size and settings.
Your original XLS file and the converted CSV file are automatically deleted from our servers within 24 hours for your privacy and security.
We use advanced algorithms to maintain the highest possible quality. CSV offers universal compatibility.
XLS (Excel 97-2003) is Microsoft Excel's legacy binary spreadsheet format. It was introduced in 1987 by Microsoft.

Still Have Questions?

Our support team is here to help you with any questions about XLS to CSV conversion.

Contact SupportView All FAQs
No Registration
4

Step 4

Click Convert to process your file

5

Step 5

Download your converted CSV file

Average conversion time: Less than 2 minutes

Saved:
-49%
49%
Size Reduction
5s
Processing Time
99%+
Quality Retained

This visualization shows the XLS to CSV conversion process. A source XLS file of 2.4 MB is converted to CSV format resulting in 49% file size reduction while retaining 99%+ quality. The conversion takes approximately 5s.

Maintain cell formatting during conversion

Free XLS to CSV conversion online

Additional Features

200+
Supported Formats
243+
File Formats
<2 min
Average Time
24/7
Available
3

Simple spreadsheets with CSV output

Convert XLS to CSV for this purpose quickly and easily.

4

Financial reports exported as CSV

Convert XLS to CSV for this purpose quickly and easily.

5

Survey data exported to CSV

Convert XLS to CSV for this purpose quickly and easily.

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Convert XLSX to CSV

Online XLSX to CSV converter. Fast, free, and secure conversion.

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Convert CSV to XLS

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Can't Find Your Conversion?

We support 200+ file formats. Browse our complete list of conversions or start converting now!

Start ConvertingView All Formats

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