Chem Calc

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.

🔗 Stay updated: https://t.me/chemcalc_en