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PhET
PhET provides free simulations for physics, chemistry, biology, earth science and mathematics.
About PhET
PhET is a free web-based platform offering interactive simulations for physics, chemistry, biology, earth science and mathematics. The resources are designed to support STEM education for learners at various levels, with no required software downloads for access.
Key features
- Free interactive simulations for 5 core STEM subject areas
- Web-based access with no local software installation required
- Browse, filter and search tools to locate simulations
- Customizable simulation presets for tailored use
- Activity contribution and sharing features for educators
- Translated versions of select simulations available
Best for: K-12 and higher education educators and students seeking free interactive STEM learning resources.
Good for
- All simulations are available for free with no access fees.
- Covers a broad range of core STEM academic subjects.
- Includes built-in tools for educators to customize and share learning activities.
Watch out for
- Simulations are not open source, with no public code repository available.
PhET at a glance
- Website
- phet.colorado.edu
- Category
- Education & Learning › Online Courses
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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PhET FAQ
What subjects do PhET simulations cover?
PhET provides simulations for physics, chemistry, biology, earth science and mathematics.
Is there a cost to use PhET simulations?
All PhET simulations are free to access with no fees.
Can educators share custom activities for PhET simulations?
Educators can contribute and share custom activities for use with simulations.
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