XLSM to XLSX — Format Comparison & Online Converter
Fast, instant XLSM to XLSX conversion. No signup required. Just drop your .xlsm file and get .xlsx in seconds.
Batch Settings
About XLSM to XLSX Conversion
XLSM and XLSX (introduced 2006) are both spreadsheet formats, but they differ in important ways. XLSM is a widely used file format. XLSX is Microsoft Excel's modern format supporting formulas, charts, and multiple sheets.
When you convert XLSM to XLSX, the goal is to convert between formats quickly. Converting XLSM to XLSX maintains high quality with CocoConvert's optimised encoder settings. Understanding these technical differences helps you choose the right format for your workflow.
Your XLSM file is decoded and re-encoded as XLSX. The conversion involves 4 steps: (1) your xlsm file is uploaded and validated, (2) the file is decoded (parsed into its raw data), (3) the data is re-encoded in xlsx format, (4) the converted file is ready for download.
CocoConvert's converter handles the entire pipeline server-side using FFmpeg, Sharp, and qpdf — battle-tested libraries used by streaming platforms and enterprise tools. Files are encrypted in transit and deleted within 24 hours.
This conversion is ideal when you When you need a XLSX file. For the opposite direction, CocoConvert also supports XLSX to XLSM conversion.
How to Convert XLSM to XLSX
- 1
Upload .xlsm file
Select your XLSM file by dragging it to the upload zone or using the file picker. Batch upload is available for multiple files.
- 2
Choose .xlsx
Set XLSX as the output format. The converter uses optimal settings based on the XLSM→XLSX conversion profile.
- 3
Convert
The server-side engine decodes your XLSM file and re-encodes it as XLSX. Processing time depends on file size and complexity.
- 4
Download result
Grab your converted .xlsx file. Multiple output files can be downloaded together.
What Happens When You Convert XLSM to XLSX
Your XLSM file is decoded and re-encoded as XLSX.
Your XLSM file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in XLSX format
The converted file is ready for download
Format Comparison
XLSM
.xlsm file
| Extension | .xlsm |
| MIME Type | application/vnd.ms-excel.sheet.macroEnabled.12 |
| Category | Spreadsheet |
XLSX
.xlsx file
| Extension | .xlsx |
| MIME Type | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet |
| Category | Spreadsheet |
Should You Convert XLSM to XLSX?
When to Convert
- ✓When you need a XLSX file
Frequently Asked Questions
What is the difference between XLSM and XLSX?
XLSM is a widely used file format. XLSX is Microsoft Excel's modern format supporting formulas, charts, and multiple sheets.
Does XLSM to XLSX conversion affect quality?
Converting XLSM to XLSX maintains high quality with CocoConvert's optimised encoder settings.
Which format has better compression, XLSM or XLSX?
XLSM is a common spreadsheet format. XLSX uses lossless compression. The better choice depends on whether you prioritize file size or quality.
How long does XLSM to XLSX conversion take?
Most conversions finish in seconds. Larger files or complex spreadsheet content may take 10–30 seconds. CocoConvert processes files in parallel for batch jobs.
Is XLSM or XLSX better for long-term storage?
XLSX is better for archival since it preserves all original data.
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