XLSM to XLS — Format Comparison & Online Converter
Fast, instant XLSM to XLS conversion. No signup required. Just drop your .xlsm file and get .xls in seconds.
Batch Settings
エクセルファイル、特にマクロを多用したXLSM形式は、その機能性ゆえにビジネスの現場で幅広く活用されています。しかし、共同作業や古いシステムとの連携を考えると、互換性の高いXLS形式への変換が必要となる場面も少なくありません。例えば、取引先がまだ旧バージョンのExcelを使用している場合や、社内システムがXLSM形式に対応していない場合など、スムーズな情報共有のためには形式の統一が求められます。この変換ツールは、大切なデータやマクロの内容を損なうことなく、迅速かつ確実にXLSMファイルをXLS形式へ変換します。複雑な設定は一切不要。アップロードから変換、ダウンロードまで、直感的な操作で完結します。特に、縦書きテキストや特殊なフォント設定を含むファイルでも、できる限り元のレイアウトを保持するよう設計されていますので、ご安心ください。
- 古い会計ソフトへのデータ入力
- 展示会での顧客リスト共有
- 漫画制作における進捗管理表
日本のビジネスシーンでは、未だに旧バージョンのExcelを使用している企業も少なくないため、XLSMからXLSへの変換は円滑な外部連携に不可欠です。特に、VBAマクロを含むファイルは、変換時に互換性の問題が生じやすいため、事前の確認が推奨されます。
About XLSM to XLS Conversion
XLSM and XLS (introduced 1987) are both spreadsheet formats, but they differ in important ways. XLSM is a widely used file format. XLS is the legacy Excel format (pre-2007) — still encountered in business workflows.
When you convert XLSM to XLS, the goal is to convert between formats quickly. Converting XLSM to XLS 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 XLS. 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 xls 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 XLS file. For the opposite direction, CocoConvert also supports XLS to XLSM conversion.
How to Convert XLSM to XLS
- 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 .xls
Set XLS as the output format. The converter uses optimal settings based on the XLSM→XLS conversion profile.
- 3
Convert
The server-side engine decodes your XLSM file and re-encodes it as XLS. Processing time depends on file size and complexity.
- 4
Download result
Grab your converted .xls file. Multiple output files can be downloaded together.
What Happens When You Convert XLSM to XLS
Your XLSM file is decoded and re-encoded as XLS.
Your XLSM 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
XLSM
.xlsm file
| Extension | .xlsm |
| MIME Type | application/vnd.ms-excel.sheet.macroEnabled.12 |
| Category | Spreadsheet |
XLS
.xls file
| Extension | .xls |
| MIME Type | application/vnd.ms-excel |
| Category | Spreadsheet |
Should You Convert XLSM to XLS?
When to Convert
- ✓When you need a XLS file
Frequently Asked Questions
What is the difference between XLSM and XLS?
XLSM is a widely used file format. XLS is the legacy Excel format (pre-2007) — still encountered in business workflows.
Does XLSM to XLS conversion affect quality?
Converting XLSM to XLS maintains high quality with CocoConvert's optimised encoder settings.
Which format has better compression, XLSM or XLS?
XLSM is a common spreadsheet format. XLS uses none compression. The better choice depends on whether you prioritize file size or quality.
How long does XLSM to XLS 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 XLS better for long-term storage?
XLS is better for archival since it preserves all original data.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.