Encoding -> Convert to Ansi将其编码为Ansi /UNICODE。Utf8是Unicode的一个子集。也许在ANSI中会正确编码，但在这里我们谈论的是UTF8， @SequenceDigitale。

还有更快的方法，比如导出为csv(逗号分隔)，然后用notepad++(免费)打开csv，然后Encoding > Convert to UTF8。但前提是每个文件必须执行一次。如果你需要经常更改和导出，那么最好是LibreOffice或GDocs解决方案。

I needed to automate this process on my Mac. I originally tried using catdoc/xls2csv as suggested by mpowered, but xls2csv had trouble detecting the original encoding of the document and not all documents were the same. What I ended up doing was setting the default webpage output encoding to be UTF-8 and then providing the files to Apple's Automator, applying the Convert Format of Excel Files action to convert to Web Page (HTML). Then using PHP, DOMDocument and XPath, I queried the documents and formatted them to CSV.

这是PHP脚本(process.php):

<?php
$pi = pathinfo($argv[1]);
$file = $pi['dirname'] . '/' . $pi['filename'] . '.csv';
$fp = fopen($file,'w+');
$doc = new DOMDocument;
$doc->loadHTMLFile($argv[1]);
$xpath = new DOMXPath($doc);
$table = [];
foreach($xpath->query('//tr') as $row){
    $_r = [];
    foreach($xpath->query('td',$row) as $col){
        $_r[] = trim($col->textContent);
    }
    fputcsv($fp,$_r);
}
fclose($fp);
?>

这是我用来将HTML文档转换为csv的shell命令:

find . -name '*.htm' | xargs -I{} php ./process.php {}

这是一种非常非常迂回的方法，但这是我发现的最可靠的方法。

我发现OpenOffice的电子表格应用程序Calc非常擅长处理CSV数据。

在“另存为…”对话框中，单击“格式选项”可获得CSV的不同编码。LibreOffice的工作原理与AFAIK相同。

假设在Windows环境中，像往常一样在Excel中保存和使用文件，然后在Gnome Gnumeric中打开保存的Excel文件(免费)。保存Gnome Gnumeric的电子表格为CSV -对我来说-保存为UTF-8 CSV。

我也有同样的问题，遇到了这个添加，它在excel 2013中工作得很好，除了excel 2007和2010，它是提到的。

Easy way to do it: download open office (here), load the spreadsheet and open the excel file (.xls or .xlsx). Then just save it as a text CSV file and a window opens asking to keep the current format or to save as a .ODF format. select "keep the current format" and in the new window select the option that works better for you, according with the language that your file is been written on. For Spanish language select Western Europe (Windows-1252/ WinLatin 1) and the file works just fine. If you select Unicode (UTF-8), it is not going to work with the spanish characters.