How to Convert XLTX to XLS — Quick & Free
Fast, instant XLTX to XLS conversion. No signup required. Just drop your .xltx file and get .xls in seconds.
Batch Settings
在日常办公或数据处理中，您是否遇到过这样的情况：手头一份XLTX模板文件，急需转换成兼容性更强的XLS格式，以便在各种设备上无缝查阅或与同事轻松共享？特别是当数据需要在不同平台间流转，或是涉及老版本软件时，格式转换就显得尤为重要。我们的在线工具专为解决您的燃眉之急而设计。它操作简单、转换迅速，能精准保留原文件的数据结构与样式，让您的XLTX文件摇身一变，成为通用性更广的XLS格式。无论是处理财务报表、项目计划，还是日常数据记录，都能助您一臂之力，告别格式兼容的烦恼，让您的工作流程更加顺畅高效。
- 微信群文件分享
- 移动端数据查看
- 旧版软件兼容
考虑到大陆及东南亚地区普遍使用WPS Office或微软Office旧版本，将XLTX转换为XLS能有效避免因格式不兼容导致的文件无法打开或内容显示异常的问题，尤其是在跨设备协作时表现更为明显。
About XLTX to XLS Conversion
Short answer: yes, you can convert XLTX to XLS online for free, and quality is well preserved with the right settings. Just upload your .xltx file to CocoConvert, pick XLS as the output, and click Convert. The whole process takes seconds.
Now for the details. XLTX is a widely used file format. XLS is the legacy Excel format (pre-2007) — still encountered in business workflows. Converting between these two formats lets you convert between formats quickly.
Your XLTX file is decoded and re-encoded as XLS. Converting XLTX to XLS maintains high quality with CocoConvert's optimised encoder settings.
CocoConvert runs entirely online — no software to install, no account to create. Your files are encrypted during upload (TLS), processed on isolated servers in Germany, and permanently deleted after 24 hours. It works in Chrome, Safari, Firefox, Edge, and all mobile browsers.
Need to convert more than one file? Free users can do 5 per hour. Pro gets 100 per hour with files up to 5 GB each.
How to Convert XLTX to XLS
- 1
1. Upload XLTX
Drop your .xltx file onto the page (or tap "Browse" on mobile). Add multiple files for batch conversion.
- 2
2. Select XLS
Choose .xls from the output dropdown. Settings are pre-configured for best results.
- 3
3. Convert
One click. The server handles all the heavy lifting using FFmpeg and Sharp.
- 4
4. Download
Your .xls file is ready. Download it directly or get all files as a zip archive.
What Happens When You Convert XLTX to XLS
Your XLTX file is decoded and re-encoded as XLS.
Your XLTX file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in XLS format
The converted file is ready for download
Format Comparison
XLTX
.xltx file
| Extension | .xltx |
| MIME Type | application/vnd.openxmlformats-officedocument.spreadsheetml.template |
| Category | Spreadsheet |
XLS
.xls file
| Extension | .xls |
| MIME Type | application/vnd.ms-excel |
| Category | Spreadsheet |
Should You Convert XLTX to XLS?
When to Convert
- ✓When you need a XLS file
Frequently Asked Questions
Is XLTX to XLS conversion free?
Yes. CocoConvert offers free XLTX to XLS conversion with generous daily limits — 25 minutes of processing time and up to 5 files per hour (250 MB each). Pro plans remove these limits.
How fast is XLTX to XLS conversion?
Most files convert in 2–10 seconds depending on size. Large spreadsheet files may take 30 seconds. Batch jobs process in parallel for maximum speed.
What happens to my files after conversion?
Your uploaded XLTX file and the converted XLS file are both automatically deleted from our servers within 24 hours. They are never shared, sold, or analysed.
Does converting XLTX to XLS lose quality?
Converting XLTX to XLS maintains high quality with CocoConvert's optimised encoder settings.
Can I convert XLS back to XLTX?
Yes, CocoConvert supports XLS to XLTX conversion as well. However, if the original conversion involved lossy compression, converting back won't recover the lost data.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.