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Professional calculators, interactive tools, and 118 elements validated against NIST standards.
Built for students, educators & professionals.
18 professional tools validated against industry standards
Interactive 3D visualization with CPK coloring and rotation controls
Drag-and-drop atoms with stability validation and shake animations
All 118 elements with complete NIST-validated data
pH, Gas Laws, Stoichiometry, Thermodynamics, and more
Design wastewater treatment systems, analyze water/air/soil quality with Thai PCD standards compliance.
ออกแบบระบบบำบัดน้ำเสีย
Design complete treatment trains with 15+ unit processes. Visual builder, cost estimation, sludge balance.
BOD, COD, Thai effluent standards • 9 modes
AQI, Gaussian dispersion • 6 modes
Heavy metals, pH, NPK • 7 modes
All features are completely free. No credit card, no trial limits.
VerChem is built with love by a small team. Your support helps us maintain servers and develop new features.
Learn More💚 Supported by donations from the chemistry community
All 118 elements with properties sourced from NIST and IUPAC standards. Accurate data you can trust.
Every calculation shows the work. Learn the process, not just the answer. Perfect for students.
No paywalls, no trials. Full access to all tools. Supported by donations from the community.
All tools, all features, completely free. Start learning chemistry today.