System Requirements

CPU Requirements

To run Thermo-Calc versions 2017b and newer, the CPU needs to support SSSE3 instructions. Read about this instruction set. Learn what architectures support what instructions.

The Software is Supported on the Following Platforms

Windows

Software	64-bit
Thermo-Calc	Windows 10 Windows 11
Diffusion Module (DICTRA)	Windows 10 Windows 11
Precipitation Module (TC-PRISMA)	Windows 10 Windows 11
TC-Python*	Windows 10 Windows 11
TQ-Interface*	Windows 10 Windows 11
TC-Toolbox for MATLAB^®* **	Windows 10 Windows 11

*Additional system requirements can be found in the SDKs section at the bottom of the page.

**We support MATLAB 2021b up to MATLAB 2024b. Older versions are not possible to use.

Linux

Software	64-bit
Thermo-Calc*	Ubuntu 22.04 (Jammy Jellyfish) Ubuntu 24.04 (Noble Numbat) Red Hat Enterprise Linux (RHEL 9) openSUSE 15.6 (Leap)
Diffusion Module (DICTRA)* **	Ubuntu 22.04 (Jammy Jellyfish) Ubuntu 24.04 (Noble Numbat) Red Hat Enterprise Linux (RHEL 9) openSUSE 15.6 (Leap)
Precipitation Module (TC-PRISMA)	Ubuntu 22.04 (Jammy Jellyfish) Ubuntu 24.04 (Noble Numbat) Red Hat Enterprise Linux (RHEL 9) openSUSE 15.6 (Leap)
TC-Python***	Ubuntu 22.04 (Jammy Jellyfish) Ubuntu 24.04 (Noble Numbat) Red Hat Enterprise Linux (RHEL 9) openSUSE 15.6 (Leap)
TQ-Interface* ***	Ubuntu 22.04 (Jammy Jellyfish) Ubuntu 24.04 (Noble Numbat) Red Hat Enterprise Linux (RHEL 9) openSUSE 15.6 (Leap)
TC-Toolbox for MATLAB^®	Not available

*X Window System is required for the graphical installer.

**X Window System is required for plotting.

***Additional system requirements can be found in the SDKs section at the bottom of the page.

Mac (macOS)

Software	64-bit
Thermo-Calc	macOS Sonoma (14.x) macOS Sequoia (15.x)
Diffusion Module (DICTRA)	macOS Sonoma (14.x) macOS Sequoia (15.x)
Precipitation Module (TC-PRISMA)	macOS Sonoma (14.x) macOS Sequoia (15.x)
TC-Python*	macOS Sonoma (14.x) macOS Sequoia (15.x)
TQ-Interface*	Not available
TC-Toolbox for MATLAB^®*	Not available

*Additional system requirements can be found in the SDKs section at the bottom of the page.

mac15.1 Patch for Thermo-Calc 2020b to 2024b

It has come to our attention that Thermo-Calc versions 2024b and older do not work on macOS 15.1. Although we do not support these versions of Thermo-Calc on macOS 15.1, we want to make Thermo-Calc as accessible to our users as possible, so we have developed an app to patch the issue for versions 2020b to 2024b. Thermo-Calc versions older than 2020b do not work on macOS 15.1.

The download file includes an explanation of the issue and instructions on how to run the patch.

Download the Patch

Discontinued Platforms

Below are the previous and upcoming platforms that we have dropped support for.

Support for installing and running the Thermo-Calc software package on Windows 7 and Windows 8 has been dropped as of the Thermo-Calc 2021b release. Users with Windows 7 or Windows 8 are therefore advised to migrate to a newer operating system.
Support for installing and running the Thermo-Calc software package on all 32-bit platforms has been dropped as of Thermo-Calc 2018a. Users with a 32-bit platform installation are therefore advised to migrate to a 64-bit platform.
Support for installing and running the Thermo-Calc software package on Windows XP has been dropped as of the Thermo-Calc 4.1 version release.

Roadmap for Platform Support