Numbers spreadsheet viewer without a Mac
A Numbers spreadsheet keeps its cells in tiles of binary records inside Apple’s IWA object streams: numbers as 128-bit decimals, dates as seconds since 2001, text in shared string lists. The viewer decodes those records directly, in both the current layout and the one Numbers 3 wrote in 2013–2015, and reads the XML of Numbers ’09. Values were checked cell by cell against numbers-parser, an independent open-source reader: 134,195 of 134,195 cells match on 88 test spreadsheets.
How to use it
3 stepsPick the spreadsheet or drag it onto the box. A .numbers that arrived as a ZIP of a folder works too.
Switch between sheets with the tabs; each table is shown with its header rows, header columns and merged cells.
Save every table as one XLSX workbook, or the table you are looking at as CSV.
Open a .numbers file and save it as an Excel workbook
Apple’s own preview
Rendered by Apple and stored inside the file when it was saved: the yardstick for what you see above.