Chemistry calculator: reactions, molar mass, mass fraction, equation balancing.
Chem Calc is a powerful and easy-to-use chemistry calculator for students, teachers, and professionals.
It helps you solve chemical problems, balance equations, and perform accurate calculations — both online and offline.
Most features work offline. Internet access is required only for reaction search.
Key Features
Interactive Periodic Table
Explore all chemical elements with detailed properties:
- atomic number and atomic mass
- electron configuration
- electronegativity
- atomic radius and oxidation states
- standard state and physical properties
Tap any element to view full information.
Reaction Search and Equation Balancer
- Search for common inorganic and organic reactions
- Automatic equation balancing
- Correct stoichiometric coefficients
- Support for complex formulas and brackets
Molar Mass Calculator
Calculate molar mass for any valid chemical formula (for example: C6H12O6, Fe2O3, KMnO4).
- detailed element breakdown
- support for nested brackets
- crystal hydrates (CuSO4·5H2O)
- pH and Acid–Base Calculations
- pH calculation for acids and bases
- concentrations of H⁺ and OH⁻
- support for weak acids and bases using pKa / pKb
Gas Laws and Ideal Gas Calculator
Solve problems using the ideal gas equation PV = nRT.
- pressure, volume, temperature, amount of substance
- automatic unit conversion (Pa, atm, mmHg, L, mL, K, °C)
Concentration and Dilution Tools
- molarity, molality, normality
- mass fraction and volume fraction
- dilution and solution mixing calculations
Calculation History
All recent calculations are saved so you can quickly return to previous results.
Unit Converter
Convert:
- mass, volume, amount of substance
- concentration units
- number of particles (Avogadro’s number)
Change units without re-entering values.
Why Choose Chem Calc
- Accurate and reliable data based on standard chemistry references
- Clean and intuitive interface
- Works offline for most calculations
- Suitable for school, university, and laboratory use
Regular updates with new features and improvements
Download Chem Calc and keep all essential chemistry calculations in one app — no paper tables or external references needed.
Follow updates:
https://t.me/chemcalc_en
Privacy Policy: https://www.notion.so/Privacy-Policy-204d504d7d5a80218d28dee6633990d5?source=copy_link
Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
5.0
out of 5
1 Ratings
What's new in this version
- Compound search: find any substance by name or formula and get its structure, molar mass, formula, IUPAC name, key properties and description.
- Safety data: melting and boiling points, density, solubility and GHS hazard information with pictograms — shown in your language.
- Performance and stability improvements, plus interface fixes.
Compound search requires an internet connection; the other tools work offline.
Version 1.11.0
The developer, Fanis Kalimullin, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
Fanis Kalimullin
Size
80.2 MB
Category
Productivity
Compatibility
Requires iOS 26.0 or later.
iPhone Requires iOS 26.0 or later.
iPad Requires iPadOS 26.0 or later.
Mac Requires macOS 26.0 or later and a Mac with Apple M1 chip or later.
