Free Online Chemistry Calculators

Chemistry problems have a way of looking impossible — until you have the right tool. Our chemistry calculators are here to make molarity, stoichiometry, pH, and dilution calculations feel almost effortless. Whether you're a student balancing equations at midnight, a lab tech double-checking reagent concentrations, or a professional who just needs a quick sanity check — these tools deliver accurate results in seconds. Need to convert between moles, mass, and particles? Trying to figure out how much solution to dilute? Just enter your values and let the calculator handle the rest. No more hunting for formulas or second-guessing your math.

Acid-Base & pH Chemistry Calculators

24 tools

Analytical Chemistry Calculators

18 tools

Biochemistry Calculators

23 tools

Chemical Engineering Calculators

16 tools

Chemical Equations & Reactions Calculators

10 tools

Chemical Equilibrium Calculators

7 tools

Chemical Kinetics Calculators

8 tools

Chemical Thermodynamics Calculators

12 tools

Chemistry Unit Conversions Calculators

9 tools

Colligative Properties Calculators

6 tools

Electrochemistry Calculators

9 tools

Environmental & Water Chemistry Calculators

12 tools

Gas Laws Calculators

5 tools

General & Atomic Chemistry Calculators

28 tools

Nuclear Chemistry Calculators

6 tools

Organic Chemistry Calculators

19 tools

Physical Chemistry Calculators

28 tools

Reference & Tools Calculators

13 tools

Solutions & Concentrations Calculators

20 tools

Stoichiometry Calculators

15 tools