Chemistry Calculators

Free chemistry calculators for equation balancing, stoichiometry, dilution, pH, buffers, Ksp, equilibrium, gas laws, kinetics, and redox.

Use these chemistry calculators for homework and lab prep: balance a reaction, convert moles, dilute a stock, or solve an ICE table. Each tool runs in the browser and shows the formula it used.

  • Reactions: balancer, redox, stoichiometry, limiting reagent, empirical formula
  • Solutions: C₁V₁ dilution and molarity / mg/mL / ppm conversion
  • Equilibrium and acids: Kc/Kp, Ksp, pH, phosphate and McIlvaine buffers
  • Gases, kinetics, thermochemistry, and Nernst cell potential

Start with the Chemical Equation Balancer if you have a reaction, the Ksp Calculator for solubility-product homework, or the Phosphate Buffer Calculator for a named lab recipe. The chemistry formula sheet collects the equations in one place.

Keep the chemistry formula sheet open while you work.