Chemistry calculators, done carefully.
Chemkit is a growing library of interactive chemistry tools. Every calculator is unit-tested against textbook worked examples, ships with the equation it uses, and cites its physical constants. No accounts, no ads shoved in your face, no tracking beyond basic analytics.
Calculators
solutions
- Molarity Calculator
Solve for mass, molecular weight, volume, or molar concentration in mol/L.
- Dilution Calculator
C₁V₁ = C₂V₂ — solve for any of the four dilution variables.
- Molar Mass Calculator
Type a chemical formula, get the molecular weight in g/mol.
- Serial Dilution Calculator
Plan multi-step dilutions with per-step volumes and a stock check.
acid-base
- Buffer Calculator
Henderson-Hasselbalch pH from acid/base ratio, plus common recipes.
Coming soon
- Dilution calculator
- Molar mass calculator
- Buffer calculator
- Serial dilution calculator