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Basis Set Exchange
The Basis Set Exchange provides downloadable basis sets for quantum chemistry in formats including NWChem and Gaussian.

About Basis Set Exchange
The Basis Set Exchange provides downloadable basis sets for quantum chemistry in formats including NWChem and Gaussian. Users can select sets, view details such as description, version, last update, role, family, function types, notes, and references, and download individual sets or all sets at once. Some elements may not be writable in a selected format.
Key features
- Downloadable basis sets for quantum chemistry calculations
- Download in formats including NWChem and Gaussian
- Bulk download option for all basis sets
- Basis set details including version, update date, and family
- References listed for selected basis sets
- Error reporting and contributions via GitHub or email
- Includes version, last update, and reference information for selected sets
- Provides bulk download of all basis sets
- Lists contact options for corrections and contributions
- Some basis set content may not be writable in a selected format
Basis Set Exchange at a glance
- Website
- basissetexchange.org
- Category
- Research & Data › Open Data & Datasets
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Basis Set Exchange FAQ
How do I report a possible error or suggest a basis set addition?
How should I cite use of the Basis Set Exchange software?
Tell us and an editor will check it.
Claim the listing and suggest updates yourself. An editor checks every claim first.











