Since both the XLSMHTML and XLSHTML files originate from Microsoft Excel, it is probably the only choice if you want to resave one to another. Both are HTML variants of Excel spreadsheets.
Convert Microsoft Excel MIME HTML spreadsheet to Microsoft Office Excel HTML document file.
We have found 2 software records in our database eligible for .xlsmhtml to .xlshtml file format conversion.
Microsoft Windows software - convert xlsmhtml to xlshtml on Windows
A popular spreadsheet application distributed with Microsoft Office suite
Convert from xlsmhtml file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned xlsmhtml to xlshtml. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
Apple macOS / Mac OS X software - convert xlsmhtml to xlshtml on OS X
A popular spreadsheet application from the Microsoft Office suite