Chemistry Calculators | Molar Mass, Stoichiometry, pH & More

Our Chemistry Calculators collection provides a comprehensive suite of tools for solving problems in general, organic, physical, analytical, and nuclear chemistry. Whether you're calculating molar mass, balancing equations, determining pH, analyzing thermodynamics, or studying reaction kinetics, these calculators deliver accurate results with clear explanations.

From molar mass and stoichiometry to acid-base chemistry, thermodynamics, gas laws, equilibrium, and organic chemistry, our tools cover the full spectrum of chemical calculations.

How to Use This Directory

Search: Type a keyword into the search bar to find specific calculators by name or description.
Filter by Category: Use the dropdown to narrow down to a specific chemistry topic — each option shows the number of tools available.
Click to Use: Each card links directly to the tool. Click on any card to start your chemistry calculation instantly.
Explore Category Pages: Use the "Explore More Science Calculators" section to access dedicated pages for other science topics.

Why Use Our Chemistry Calculators?

Comprehensive Coverage: Covers molar mass, stoichiometry, concentration, pH, thermodynamics, gas laws, equilibrium, nuclear chemistry, organic chemistry, electrochemistry, and periodic table properties.
Accurate & Reliable: Uses validated chemical formulas, constants, and IUPAC standards.
Free & Accessible: No registration, no fees — use any tool instantly on any device.
Educational: Many tools show the formulas and principles behind the calculations.
Professional & Student Friendly: Designed for both academic and professional chemical research and education.

❓ Chemistry Calculators FAQ

What types of chemistry calculations can I perform?

You can perform molar mass calculations, stoichiometry, concentration (molarity, molality, normality), pH and acid-base calculations, thermodynamics (ΔG, ΔH, ΔS), gas laws (ideal gas, Boyle's, Charles's), equilibrium (Kc, Kp, ICE tables), nuclear chemistry (decay, half-life, binding energy), organic chemistry (IHD, functional groups), electrochemistry (cell potential, Nernst equation), and periodic table property lookups.

How do I calculate molar mass of a compound?

Use our Molar Mass Calculator. Enter the chemical formula (e.g., H2O, NaCl, C6H12O6) and the tool will calculate molar mass by summing atomic masses from the periodic table with step-by-step breakdown.

How do I balance a chemical equation?

Use our Stoichiometry Calculator. Enter the unbalanced equation and the tool will balance it, showing the coefficients and mole ratios step by step.

How do I calculate pH from concentration?

Use our pH Calculator. Enter the concentration of H⁺ or OH⁻ ions, and the tool will calculate pH, pOH, and determine if the solution is acidic, basic, or neutral.

How do I use the Ideal Gas Law?

Use our Ideal Gas Law Calculator. Enter any three variables (P, V, n, T) and the tool will solve for the missing variable using PV = nRT with the appropriate gas constant.

How do I calculate Gibbs free energy?

Use our Gibbs Free Energy Calculator. Enter ΔH, ΔS, and temperature to calculate ΔG = ΔH - TΔS and determine if the reaction is spontaneous, non-spontaneous, or at equilibrium.

How do I determine the degree of unsaturation?

Use our Degree of Unsaturation (IHD) Calculator. Enter the molecular formula and the tool will calculate IHD = (2C + 2 + N - H - X) / 2 to identify double bonds, rings, or triple bonds.

Are these calculators suitable for professional research?

Yes, our calculators use accurate scientific formulas and constants, making them suitable for academic research, teaching, and professional chemical analysis.

How often are new chemistry calculators added?

We regularly add new calculators based on user requests and advances in chemistry. If you have a suggestion, please contact us.

Can I use these calculators for teaching and lab work?

Yes, these calculators are ideal for teaching chemistry and supporting laboratory work, providing clear step-by-step solutions that help students understand chemical concepts.