Free Excel Alternative: Spreadsheets, Formulas and .xlsx (2026)

Xrero Calc is a free spreadsheet app that opens Excel files, with 400+ functions, pivot tables and charts.
Free Excel alternative — spreadsheets, formulas and .xlsx

Need spreadsheets without the Excel price tag? Xrero Calc is a free Excel alternative for Windows that opens and saves .xlsx with your formulas intact.

Your formulas just work

SUM, IF, VLOOKUP, COUNTIF, SUMIFS and hundreds more — Calc supports the functions everyday spreadsheets are built on. Open your existing .xlsx and keep working:

A budget spreadsheet with SUM formulas in Xrero Calc

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Built for real work

  • Sorting, filtering and conditional formatting
  • Charts that update with your data
  • Multiple sheets, freeze panes and print areas
  • CSV import and export

Arabic-ready spreadsheets

Arabic labels, right-to-left sheets and mixed-language tables display correctly — a rarity among free spreadsheet tools, and a core feature here.

Free, offline, no account

Calc installs with the free Xrero Office suite and runs entirely on your PC. No subscription and no upload of your numbers to anyone's cloud.

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FAQ

Can it open my existing Excel files?

Yes — .xlsx opens directly, and .xls and .csv are supported too.

Will colleagues open my files in Excel?

Yes — Calc saves standard .xlsx that Excel reads normally.

Are charts supported?

Yes — column, line, pie and more, saved inside your .xlsx.

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