Yes! Convert999 works on any device with a web browser — iPhone, Android, iPad, or desktop. No app installation required. Simply open the converter, upload your XLSM file, and download the converted XLSX file.
Will I lose quality converting XLSM to XLSX?
Convert999 uses high-quality conversion algorithms to minimize quality loss. For lossless formats, the conversion is exact. For lossy formats like images and audio, we use optimized settings that balance quality and file size.
Can I batch convert multiple XLSM files to XLSX?
Yes, Convert999 supports batch conversion. Select or drag & drop multiple XLSM files and convert them all to XLSX format at once. Each file is processed locally in your browser.
What is the difference between XLSM and XLSX?
Excel Macro-Enabled (XLSM) and Microsoft Excel (XLSX) differ in compression, compatibility, and features. XLSM is optimized for its native use cases, while XLSX may offer different advantages. Visit our XLSM vs XLSX comparison page for a detailed breakdown.
Why Convert XLSM to XLSX?
Advantages
✓Microsoft Excel offers better compatibility with modern applications and workflows
✓Converting is completely free with no file size limits on Convert999
✓Your files never leave your device — 100% private and secure conversion
✓Instant conversion without waiting for server processing
Key Differences
→XLSM (Excel Macro-Enabled) is optimized for its native use cases
→XLSX (Microsoft Excel) may offer different compression or feature set
→Choose based on your target platform, quality needs, and file size requirements