HP Emulators

The new generation of HP calculator emulators. Many new models, most of them running the original microcode, all of them available for macOS, Windows and Linux.

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New HP-35, HP-29C, HP-34C, HP-67 and HP-41C emulators

Choose a calculator series

Woodstock emulators

Woodstock

HP-21, HP-22, HP-25, HP-25C, HP-27, HP-29C
Spice emulators

Spice

HP-31E, HP-32E, HP-33E, HP-33C, HP-34C, HP-37E, HP-38E, HP-38C
Classic emulators

Classic

HP-35, HP-45, HP-55, HP-65, HP-70, HP-80
HP-67 emulators

HP-67

The fully programmable card reader calculator
HP-01 emulators

HP-01

The wristwatch calculator
HP-19C emulators

HP-19C

HP-19C and HP-10 printing calculators
Topcat emulators

Topcat

HP-91, HP-92, HP-97
Voyager emulators

Voyager

HP-11C, HP-12C, HP-15C, HP-16C
HP-41C emulators

HP-41C

The alphanumeric HP-41C
Pioneer emulators

Pioneer

HP-32S, HP-42S and more

Woodstock Emulators

Woodstock Emulator

HP-25C emulator

This emulation of the famous Woodstock calculators all in one, executing the original microcode, was newly created in 2026. It contains all 6 models: HP-21, HP-22, HP-25, HP-25C, HP-27 and HP-29C.

Woodstock Low Power Emulator

HP-29C emulator

Coming soon.

Spice Emulators

Spice Emulator

HP-33C emulator

This emulation of the Spice calculators, executing the original microcode, was newly created in 2026. It contains all 8 models: HP-31E, HP-32E, HP-33E, HP-33C, HP-34C, HP-37E, HP-38E and HP-38C.

Spice Low Power Emulator

HP-34C emulator

Coming soon.

Classic Emulator

HP-65 emulator

This emulation of the Classic calculators, executing the original microcode, contains all 6 models: HP-35, HP-45, HP-55 (with Timer), HP-65, HP-70, HP-80.

HP-67 Emulator

HP-67 emulator

This emulation of the most advanced red LED calculator, executing the original microcode, lets you save and load your programs on simulated magnetic cards.

HP-01 Emulator

HP-01 emulator

This emulation of the first and only HP LED wristwatch calculator runs both the original microcode and the prototype microcode.

HP-19C Emulator

HP-10 emulator

You can run the original HP-29C/19C applications and print without paper with the HP-19C emulator. Invoke its smaller brother to have the cutest simple adding machine. Only the HP-19C is a true microcode emulator, the HP-10 is a simulation.

Topcat Emulator

HP-97 emulator

These printing desktop calculators were difficult to emulate, only the HP-91 runs the original microcode, the others are simulations.

  • MAC Version (needs Monterey 12 or higher) ZIP · 2.3 MB
  • Windows Version coming soon
  • Linux Version coming soon

Voyager Emulator

HP-11C emulator

For the first time there are the Voyager calculators here for download. They use the Nut processor to run their microcode. Enjoy the beautiful LCD display.

HP-41C Emulator

HP-41C emulator

The HP-41C, a real legend, not only because it was the first alphanumeric LCD calculator with 15-segment display, but also for its nearly infinite plug-in modules.

Pioneer Emulator

HP-42S emulator

Thanks to Emu42 from C. Giesselink, I was also able to create the Pioneer calculators. They use the Saturn processor in different variations to run their microcode. The HP-42S is considered the most advanced pocket calculator of the golden HP era.