If you're still saving Excel spreadsheets with a three-letter .xls extension, you're lugging around a digital anchor from the era of dial-up. Beyond being a 1990s relic, these legacy files are slow, ...

Docs, Google's online word processing application, has gotten a little bit more useful today. It now lets you import files from Microsoft Office 2007, including Word files in the .docx format and ...

Google can convert a Microsoft Excel workbook to a Google spreadsheet. You can then access the file online from any computer and share it with specific people. For example, if an entire team in your ...

XLS files are Excel workbook files created in Excel 97 or Excel 2003. The 2007, 2010 and 2013 versions of the program use the XLSX format by default to save workbooks, but can also use the XLS format.