Welcome to ChemToolsHub

A comprehensive platform for chemical calculations and structure conversion tools. Explore our collection of free online tools.

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Atomic Properties Calculator

Atomic Properties Calculator

Calculate and view detailed properties of chemical elements using their atomic symbols.

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pH Calculator

pH Calculator

Calculate pH values from H+ concentration, pOH, or acid/base solutions. Includes visual pH scale and detailed results.

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3D Conformer Generator

3D Conformer Generator

Generate and visualize 3D molecular conformations from SMILES notation. This tool helps you explore different possible 3D arrangements of your molecules.

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Structure Converter

Structure Converter

Convert between different chemical structure formats including SMILES, InChI, IUPAC, MOL file, and 2D structure images.

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Chemical Structure Editor

Chemical Structure Editor

Draw, edit, and convert chemical structures. Supports multiple formats including SMILES, MOL, InChI, and image export. Features structure recognition from images.

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Molecular Weight Calculator

Molecular Weight Calculator

Fast and accurate online tool for calculating compound molecular weight, supporting molecular formulas and SMILES input, widely used in chemical research, education and industrial applications.

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Solution Preparation Calculator

Solution Preparation Calculator

Calculate required amounts of solute and solvent for preparing solutions of specific concentrations. Supports molarity, molality, mass percentage, and PPM.

Compute Properties Calculation Tools

Molecular Descriptor Calculator

Molecular Descriptor Calculator

Calculate and visualize molecular descriptors including molecular weight, LogP, TPSA, and other important properties for chemical compounds

Analyze Data Structure Tools

Chemical Equation Balancer

Chemical Equation Balancer

Balance chemical equations automatically. Support complex redox reactions and get stoichiometric coefficients.

Balance Equation Calculation Tools

Phase Diagram Calculator

Phase Diagram Calculator

Calculate and visualize phase states of substances at different temperatures and pressures, including critical points, triple points, and phase boundaries

Compute Properties Calculation Tools

Chemical Safety Data

Chemical Safety Data

Query chemical safety data sheets (MSDS), physical and chemical properties, hazards, and emergency procedures

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Structure Similarity Calculator

Structure Similarity Calculator

Compare chemical structures and calculate similarity scores using different fingerprint methods and similarity metrics.

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Frequently Asked Questions

ChemToolsHub is a free online chemistry tools platform providing 15+ professional chemical calculators and structure tools, supporting molecular weight calculation, chemical equation balancing, pH calculation, structure conversion and more, widely used in chemical research, education and industry.

Yes, all chemistry tools on ChemToolsHub are completely free to use, with no registration or payment required. We're committed to providing free professional chemical calculation tools for researchers, students and chemistry professionals worldwide.

ChemToolsHub supports 10 languages: Chinese (Simplified), English, Japanese, Korean, French, German, Italian, Arabic, Spanish, and Hindi, making it accessible to users worldwide.

We use industry-standard scientific algorithms and the latest atomic mass data to ensure the accuracy of all calculation results. All tools have been rigorously tested and are suitable for research and educational needs.

You can send us a message through the contact page, and we'll respond promptly to your questions and suggestions. We value user feedback and continuously improve and optimize tool functionality.

Yes, ChemToolsHub uses responsive design and perfectly supports various devices including phones, tablets, and computers, allowing you to perform chemical calculations anytime, anywhere.