Stoichiometry Calculator

Stoichiometry is the calculation of relative quantities of reactants and products in chemical reactions based on the balanced chemical equation.

Key Concepts:

• Mole ratios from balanced equations
• Mass-to-mole conversions using molecular weights
• Volume calculations for gases at STP
• Limiting reactant determination

Example: 2H2 + O2 → 2H2O
If you have 2 moles of H2, you need 1 mole of O2 and produce 2 moles of H2O.

1. Set up your chemical equation with reactants and products
2. Adjust coefficients to balance the equation
3. Enter the amount of one compound (in moles, grams, or liters)
4. Select the compound and unit
5. Click "Calculate Stoichiometry" to get results for all compounds