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

XLS to EXCEL Converter — Fast & Free Online

Beginner-friendly XLS to EXCEL converter. No technical knowledge required.

FromXLSToEXCEL
Convert XLS to EXCEL Now
100% Free
Secure & Private
Fast Conversion
No Registration
1CONVERTER Document Team - 1CONVERTER Team Logo
1CONVERTER Document Team·Document Processing Experts·Updated Mar 15, 2026
Official

How to Convert XLS to EXCEL

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

1

Step 1

Upload your XLS file

2

Step 2

Choose EXCEL 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...

~2s

excel

Output file

Size:1.2 MB

Why Convert XLS to EXCEL?

Discover the advantages of converting your XLS files to EXCEL format

Batch process multiple XLS files at once

Charts and graphs preserved in EXCEL

Multi-sheet support in EXCEL

Popular Use Cases

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

1

Budget spreadsheets as EXCEL

Convert XLS to EXCEL for this purpose quickly and easily.

2

Financial reports exported as EXCEL

Convert XLS to EXCEL for this purpose quickly and easily.

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XLS

Frequently Asked Questions

Everything you need to know about converting XLS to EXCEL

XLS (Excel 97-2003) is Microsoft Excel's legacy binary spreadsheet format. It was introduced in 1987 by Microsoft.
Free users can convert XLS files up to 10 MB. Pro plan supports up to 200 MB, and Business plan supports up to 500 MB per file.
No software installation needed. Our XLS to EXCEL converter works entirely in your web browser on any device - desktop, tablet, or mobile.
Yes! Our converter is fully mobile-responsive. Convert XLS to EXCEL on iPhone, Android, or any mobile device with a web browser.
Your original XLS file and the converted EXCEL file are automatically deleted from our servers within 24 hours for your privacy and security.
Absolutely. All uploads are encrypted with SSL/TLS, processed on secure servers, and automatically deleted within 24 hours. We never share or access your files.

Still Have Questions?

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

Contact SupportView All FAQs
4

Step 4

Click Convert to process your file

5

Step 5

Download your converted EXCEL file

Average conversion time: Less than 2 minutes

Saved:
-51%
51%
Size Reduction
2s
Processing Time
95%+
Quality Retained

This visualization shows the XLS to EXCEL conversion process. A source XLS file of 2.4 MB is converted to EXCEL format resulting in 51% file size reduction while retaining 95%+ quality. The conversion takes approximately 2s.

Fast XLS to EXCEL conversion in seconds

Secure conversion with automatic file deletion

Additional Features

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

Simple spreadsheets with EXCEL output

Convert XLS to EXCEL for this purpose quickly and easily.

4

Legacy systems with EXCEL output

Convert XLS to EXCEL for this purpose quickly and easily.

5

Inventory lists converted to EXCEL

Convert XLS to EXCEL for this purpose quickly and easily.

Trusted by Professionals In

Web Development
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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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