Free Chemistry Tools
For Serious Students
Molecular calculators, equation balancers, pH tools and more, built by an expert, completely free. No signup. No limits.
Most Used Chemistry Tools
Fast, precise calculators for the problems students repeat every week.
Molecular Weight Calculator
Calculate molar mass from formulas with parentheses and bracket groups.
↗ 90K monthly searches
Chemical Equation Balancer
Balance chemical equations and verify atom counts on both sides.
↗ 200K monthly searches
pH Calculator
Calculate pH, pOH, [H+], and [OH-] for acid-base problems.
↗ 150K monthly searches
Molarity Calculator
Solve concentration, moles, and volume with M = n/V.
↗ 120K monthly searches
Every Tool You Need
20+ free chemistry tools built by an expert chemist.
Molecular Weight Calculator
Calculate molar mass from formulas with parentheses and bracket groups.
↗ 90K monthly searches
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Chemical Equation Balancer
Balance chemical equations and verify atom counts on both sides.
↗ 200K monthly searches
Open Tool →
pH Calculator
Calculate pH, pOH, [H+], and [OH-] for acid-base problems.
↗ 150K monthly searches
Open Tool →
Molarity Calculator
Solve concentration, moles, and volume with M = n/V.
↗ 120K monthly searches
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Limiting Reagent Calculator
Find the limiting reactant from equation stoichiometry and amounts.
↗ 70K monthly searches
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Percent Yield Calculator
Calculate actual, theoretical, or percent yield.
↗ 55K monthly searches
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Ideal Gas Law Calculator
Solve PV = nRT with pressure, volume, mole, and temperature units.
↗ 65K monthly searches
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Half Life Calculator
Calculate remaining amount, elapsed time, or half-life.
↗ 45K monthly searches
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Dilution Calculator
Use C1V1 = C2V2 to prepare lab dilutions.
↗ 40K monthly searches
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Empirical Formula Calculator
Convert percent composition or masses to simplest formula ratios.
↗ 35K monthly searches
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Gibbs Free Energy Calculator
Calculate ΔG and interpret spontaneity.
↗ 30K monthly searches
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Boiling Point Reference
Search boiling points and run elevation calculations.
↗ 40K monthly searches
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Interactive Periodic Table
Explore all 118 elements with atomic masses and categories.
↗ 300K monthly searches
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Lewis Structure Drawer
Draw dot structures, count valence electrons, and check formal charge.
↗ 80K monthly searches
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IUPAC Name Generator
Generate systematic organic names from structure rules.
↗ 50K monthly searches
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Functional Group Identifier
Identify alcohols, carbonyls, amines, esters, and more.
↗ 30K monthly searches
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Proton NMR Prediction Tool
Predict 1H NMR chemical shifts, splitting patterns, integrations, and proton environments from structure input.
↗ 18K monthly searches
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Carbon NMR Prediction Tool
Predict 13C NMR chemical shifts and carbon environments for organic structure analysis.
↗ 12K monthly searches
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Reaction Mechanism Visualizer
Visualize curved-arrow reaction mechanisms step by step.
↗ 25K monthly searches
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Named Reactions Database
Search named reactions, reagents, products, and conditions.
↗ 35K monthly searches
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Buffer pH Calculator
Use Henderson-Hasselbalch for buffer systems.
↗ 35K monthly searches
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Electronegativity Chart
Compare Pauling values and classify bond polarity.
↗ 25K monthly searches
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MSc Qualified
Tools are organized around textbook formulas and exam-ready chemistry reasoning.
Instant Results
Core calculators run directly in the browser for speed and privacy.
AI-Ready
The app includes a server-side AI tutor route for explanations and future advanced features.
Ask the Chemistry Model
Get a concise explanation, study hint, or step-by-step check. Uses a secure server route when OPENAI_API_KEY is configured.
Advanced Model Features
Next additions can include step-by-step generated solutions, reaction mechanism coaching, quiz generation, study plans, and explanation checks for every calculator result.
View AI Roadmap →Questions Students Ask
Yes. The calculators and references are free for educational use, with monetization planned through ads, courses, tutoring, and affiliate resources.
The site is presented under MSc Organic Chemistry credentials and designed around standard chemistry workflows.
The AI tutor uses a secure server route so model prompts can explain chemistry concepts without exposing API keys in the browser.
Yes. The interface is responsive, with mobile navigation, single-column tools, and smaller ad placements.
No calculator input is stored by default. The AI tutor sends the question to the server only when you explicitly ask it.