Equation Encyclopedia
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STEM Formula Library
Master 2,000+ STEM Formulas
Equation Encyclopedia is the free, comprehensive equation library and learning platform for students and professionals. Browse 2,000+ verified formulas across Mathematics, Physics, Chemistry, Biology, Engineering, Finance, and Economics — each with interactive calculators, step-by-step derivations, rearrangement tools, and practice problems.
2,000+
Verified formulas
4,000+
Rearrangements
51
Game modes
Why Students Choose Equation Encyclopedia
- 2,000+ verified equations — covering A-Level, IB, AP, SAT, and university-level STEM subjects, all free to access.
- Interactive calculators — solve formulas instantly. Enter known values and compute unknowns with unit-aware calculations.
- AI-powered tools — use AI to search equations, generate cheat sheets, explain formulas, and create study materials.
- Cheat sheets & flashcards — build printable revision sheets. Drag equations, add notes, and export for exams.
Subjects Covered
- General
- Mathematics
- Physics
- Chemistry
- Engineering
- Data & Computing
- Finance
- Economics
- Psychology
- Biology
- Geography
- Geology & Earth Science
- Music Technology
- Quantum Computing
- Medicine & Healthcare
- Sociology