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About this tool
Convert XLS/XLSX spreadsheets into HTML tables to easily preview and transfer.
The Excel to HTML Converter turns a worksheet from an .xlsx, .xls or .csv file into a complete standalone HTML document — a single marked-up table wrapped in an HTML5 page with its own embedded stylesheet. It parses the workbook with the SheetJS engine in your browser, lists every sheet name so you can pick the tab you want, and shows both a live rendered preview and the raw HTML source. The generated markup already carries collapsed borders, zebra striping on even rows and a sticky header, so it looks presentable the moment you open it.
Open Excel to HTML Converter on AltFTool — it loads instantly in your browser.
Drop a workbook on the Drag & drop your file here panel or press Browse Files; it accepts .xlsx, .xls and .csv and parses the workbook inside the page.
Pick the worksheet you want from the Available Sheets list, then switch between Visual Preview and HTML Source to check the rendered table against the markup.
Press Copy to take the markup, or Save HTML to download a full HTML5 document with embedded CSS named after the file and sheet, for example budget-Q3.html.
The sidebar lists all worksheet names from the workbook so you convert the tab you actually want, not just the first one.
Toggle between the rendered table in a live iframe and the exact HTML you are about to copy, so there are no surprises after paste.
The download is a full HTML5 document with embedded CSS — sticky headers, alternating row shading, horizontal scroll container — not a bare tag soup you have to style yourself.
No — it converts one worksheet at a time, but every sheet in the workbook is listed and switching between them is one click. Each conversion downloads as its own file named after the source file plus the sheet name, for example budget-Q3.html.
XLSX, XLS and CSV. The file is read as an array buffer and parsed in the page, so nothing is uploaded to a server; if the workbook is corrupt or in an unsupported format you get a parse error rather than a broken table.
No — the converter renders the cached cell values, not the formula expressions, because HTML tables have no calculation layer. A cell containing =SUM(A1:A10) appears as its computed number.
You can, but move the styles inline first. The generated file puts CSS in a <style> block in the <head>, and several email clients strip head styles, so run the markup through an inliner or copy just the <table> element and add your own inline attributes.
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