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
Precisa converter seus arquivos XLTX para XLS e garantir a compatibilidade em qualquer lugar? No universo digital atual, onde a agilidade é fundamental, ter documentos no formato certo pode fazer toda a diferença. Seja para compartilhar planilhas com colegas que utilizam versões mais antigas do Excel, para integrar dados em sistemas financeiros legados ou simplesmente para facilitar o acesso em dispositivos móveis, a conversão de XLTX para XLS é uma solução prática e eficiente. Nossa ferramenta foi desenvolvida pensando na sua comodidade, proporcionando um processo rápido e seguro, sem complicação. Diga adeus às incompatibilidades e tenha seus dados sempre à mão, no formato que você precisa.
- Relatórios bancários digitais
- Planilhas de orçamento pessoal em apps
- Modelos de conteúdo para redes sociais
Em Portugal e no Brasil, muitos sistemas legados e aplicações móveis de bancos ainda preferem o formato XLS pela sua ampla compatibilidade, mesmo com o avanço do XLSX e XLTX.
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.