Loading tool...
Need to balance a chemical equation or compute molar masses? This chemistry calculator covers the essentials: equation balancing, molar mass lookup, stoichiometry, solution dilution, and ideal gas law calculations. Enter formulas using standard chemical notation and get accurate results instantly.
Balance equations and compute stoichiometric quantities for homework and lab reports.
Calculate dilution volumes and molar concentrations before preparing solutions.
Look up molar masses without flipping through a textbook.
Practice stoichiometry and gas law problems with instant feedback.
The equation balancer uses an algebraic method to find the smallest integer coefficients that satisfy conservation of mass for every element. Molar mass computation parses molecular formulas (including nested parentheses like Ca(OH)2) and sums atomic masses from a built-in periodic table dataset. Stoichiometry tools let you convert between moles, grams, and particles for any reactant or product once an equation is balanced. Dilution and gas law modules round out the toolkit for general chemistry coursework.
Use standard notation with + between reactants/products and -> or = for the arrow. Example: H2 + O2 -> H2O.
Yes. Formulas like Ca(NO3)2 are parsed correctly, including nested parentheses.
The ideal gas law solver uses R = 0.0821 L·atm/(mol·K) by default. Make sure your pressure is in atm and temperature in Kelvin.
The balancer works for equations that can be balanced by inspection or algebraic methods. Half-reaction balancing for complex redox reactions is not currently supported.
All processing happens directly in your browser. Your files never leave your device and are never uploaded to any server.