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⚗️ Stoichiometry Calculator

Calculate reaction yields and stoichiometric relationships

Format: reactant:product (e.g., 1:1, 2:1, 1:2)

About Stoichiometry Calculator

Stoichiometry is the calculation of quantities in chemical reactions. This calculator helps you determine the theoretical yield of products based on the amount of reactants, using balanced chemical equation ratios.

How to Use

  1. Enter the mass of your reactant in grams
  2. Enter the molar mass of the reactant (g/mol)
  3. Enter the molar mass of the product (g/mol)
  4. Enter the stoichiometric ratio from your balanced equation (e.g., 1:1, 2:1)
  5. Click Calculate to see moles and theoretical yield

Example

Reaction: 2H₂ + O₂ → 2H₂O

Given: 10.0 g of H₂ (molar mass = 2.0 g/mol)

Ratio: 2:2 (or 1:1) for H₂:H₂O

Result: 5.0 mol H₂ → 5.0 mol H₂O → 90.0 g H₂O