Calculator — Windows XP
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Calculator for Windows XP — run it in your browser

The Standard and Scientific calculator from Windows XP, with the same button layout and memory keys.

▶ Open Calculator in Windows XP

About Calculator in Windows XP

calc.exe in Windows XP switched to arbitrary-precision arithmetic, which is why 2 − 1.9 finally came out as 0.1 instead of a floating-point smear. It has a Standard view and a Scientific view with trigonometry, logarithms, factorials and Hex / Dec / Oct / Bin modes.

What works in this simulator

  • Standard and Scientific views
  • Memory keys MC, MR, MS and M+
  • Keyboard entry and Ctrl+C / Ctrl+V of results
  • Digit grouping and the original LCD-style display

Frequently asked questions

How do I switch the Windows XP Calculator to scientific mode?
Choose View > Scientific. View > Standard switches back. The Scientific view adds trigonometry, logarithms, factorials and Hex, Dec, Oct and Bin modes.
Can I type numbers with the keyboard?
Yes. Digits, + - * /, Enter for = and Esc to clear work as in the original calc.exe, and Ctrl+C / Ctrl+V copy and paste the display.

This is a free recreation of Windows XP Professional SP2 (Luna blue theme) written in HTML, CSS and JavaScript — nothing is downloaded or installed, and your files stay in your own browser. Open the full Windows XP desktop.

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