VerChem: Chemistry Calculator

Complete chemistry calculator with formula reference, quick tool switching & step-by-step solutions. NIST/IUPAC data, 100% offline. Pay once, use forever.

VerChem is a comprehensive chemistry calculator for students — essential tools in one app, powered by NIST/IUPAC reference data.

• Reaction Workspace — connect balancing, limiting reagents, excess and yield; check answers with unit conversion.
• Explore chemistry through rotatable 3D molecules, titration controls, gas particles and orbital filling; reopen saved problem inputs.

INTERACTIVE TOOLS

• Full Periodic Table — 118 elements with complete properties
• VSEPR Geometry — predict molecular shapes with visual diagrams
• Lewis Structures — electron dot diagrams with formal charges
• Compounds Database — common compounds with hazards & uses

CALCULATORS

• Equation Balancer — auto-balance with reaction type detection
• Stoichiometry — mass, moles, molecules & percent composition
• Solutions & pH — strong/weak acid-base, buffers, visual pH scale
• Gas Laws — ideal, Boyle, Charles, Dalton, Van der Waals & more
• Thermodynamics — Gibbs free energy, equilibrium & reaction analysis
• Chemical Kinetics — rate laws, half-life & Arrhenius equation
• Electrochemistry — cell potential, Nernst equation & electrolysis
• Electron Configuration — orbital box diagrams with filling order

LAB TOOLS

• Titration — curves, equivalence point & Henderson-Hasselbalch
• Nuclear Chemistry — radioactive decay, binding energy & activity
• Solution Preparation — molarity, dilution & mass percent recipes
• Unit Converter — temperature, pressure, mass, volume & more

STUDY & REFERENCE

• Calculator Guides — every calculator explains what it is, how it works, key terms and when to use it, with one-tap Try this example
• Zoomable Diagrams — pinch to magnify the periodic table, molecular geometry, orbital and titration views
• Formula Reference — searchable collection of essential chemistry equations, localized in your language
• Quick Tool Switcher — jump between tools instantly without returning to home
• Copy & Share — export any calculation result with one tap
• Tablet Optimized — responsive layout for tablets

WHY STUDENTS LOVE VERCHEM

• Step-by-step solutions for every calculation
• 100% offline — no internet required, no AI API costs
• NIST/IUPAC reference element data — accurate & reliable
• Dark theme designed for late-night study sessions
• Calculation history — review your work anytime
• Haptic feedback on every interaction
• Multilingual — available in English, Japanese, Korean, Chinese, Spanish, Portuguese, French, German, Indonesian, Russian, Italian, Arabic, Hindi & Thai

BUILT FOR STUDENTS From high school chemistry to university general chemistry, VerChem covers your core curriculum topics. Pay once, use forever — no subscriptions, no ads, no hidden costs.

DISCLAIMER: VerChem is designed for educational purposes only. Always verify critical calculations with your instructor or official references. Not intended for professional laboratory or industrial use.

Data sources: NIST Atomic Spectra Database, IUPAC 2021 Standard Atomic Weights, CODATA 2018 Physical Constants, CRC Handbook of Chemistry and Physics.