Spreadsheet file formats

Formats for workbooks: sheets of cells holding numbers, text and formulas, with their formatting, charts and named ranges.

Formats

.NUMBERS

Apple Numbers spreadsheet

Apple Numbers spreadsheet: tables and charts on a canvas, stored in IWA files.

.ODS

OpenDocument Spreadsheet

The open standard spreadsheet: tables of cells as XML in a ZIP package.

.WK1

Lotus 1-2-3 worksheet

Lotus 1-2-3 Release 2 worksheet: a run of records, one per cell.

.XLS

Excel 5.0 and 95 workbook (BIFF5)

Excel 5.0 and 95 workbooks: BIFF records in a compound file’s Book stream.

.XLS

Excel 97–2003 workbook (BIFF8)

Excel 97–2003 workbooks: BIFF records and a shared string table in a compound file.

.XLSB

Excel binary workbook

Excel’s binary workbook since 2007: the XLSX package with binary records instead of XML.

.XLSX

Excel workbook

Microsoft Excel’s ZIP package of sheets, shared strings and styles.