Gaussian 16W (G16W) is a commercial computational chemistry software and does not have a public, direct download link for unauthorized users. Official access is typically provided through physical media (DVD) or secure, password-protected download links sent to licensed customers by Gaussian, Inc. .

For commercial users, the 32-bit serial single-machine version carries a standard price of approximately ¥512,600 JPY plus tax (equivalent to roughly $3,500–$4,000 USD depending on exchange rates). The 64-bit multiprocessor version commands a higher price, with educational discounts available for qualifying institutions. Site-wide licenses are also offered for organizations requiring multi-user access.

The General Atomic and Molecular Electronic Structure System is a freeware quantum chemistry package available for Windows, Linux, and Mac.

Once installed, Gaussian 16W provides an unmatched toolkit for molecular modeling, including:

Gaussian offers tailored pricing and licensing models depending on your organization:

Authorized scientific software resellers also provide the software.

Before downloading, ensure your Windows PC meets the necessary requirements for Gaussian 16W (G16W) . 64-bit AMD64 or Intel64 (EM64T) processor.

What (organic, inorganic, polymers) are you planning to simulate?

To get a legitimate Gaussian 16W download link, you must follow the official procurement process: 1. Identify Your Licensing Tier

Access to technical support and thorough documentation.

If you can tell me (academic vs. commercial) or if you need help with setting up specific input file types , I can guide you further. Share public link