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LXVII (pronounced "67") is a faithful simulation of the Hewlett-Packard HP-67 calculator for OS X. Among its many features are:

  • The ability to have multiple calculators and programs running at once.
  • A live display of all stack, memory and program registers.
  • A separate paper tape window
  • Customizable display colors
  • and many more

What's New

Version 1.5.5:
  • Fix the INT function so it correctly gets the integer value for negative numbers.
  • Fix the ISZ/DSZ functions so they only use the integer part of the number for the test.


  • OS X 10.6.6 or later

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LXVII User Discussion

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Yukonjack Member IconComment+207

If only there were a way of copying programs from mag strips into the Mac. Keystroke programming was such a downer then.

I saw a lot of reviews of the 35S that came out a few years ago and many reviewers were surprised that HP didn't include a mini-USB port to copy back and forth.

Reply0 replies
Version 1.5.0
pinchies Member IconComment+0

Thankyou!!! :) I love my HP-67 and can now take it with me!

Reply0 replies
Version 1.1.2
M!k3 Member IconComment+2

Is there something similar for the HP48 available?

Reply1 reply
Version 1.1.1

you can dig up the x48 program that might still be available on hpcalc.org for Mac OS X.

This is a nice program too, by the way.

If you want to give x48 a much needed update, I'd be very interested as well.

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Current Version (1.x)


Downloads 7,798
Version Downloads 1,766
License Free
Date 05 Apr 2014
Platform Intel 64 / OS X
Price Free