Stoichiometry Calculator

Balance chemical equations and calculate moles, mass, and volume relationships between reactants and products.

Find *

Significant Figures

Balanced Chemical Equation *

Use format: coefficients + formula, separated by + and ->. Examples: 2H2 + O2 -> 2H2O, N2 + 3H2 -> 2NH3

Given Substance *

Given Amount *

Given Unit

Find Substance *

Find Unit

Show Steps

Show Equation

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Stoichiometry Result

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Mole Ratio Visualization

Visual representation of stoichiometric relationships

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Calculation Breakdown

Step-by-step stoichiometry calculation

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Result

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Found value

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Mole Ratio

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Given : Find

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Given Moles

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mol

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Find Moles

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mol

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Stoichiometry Formulas

Key formulas and relationships

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Stoichiometry Tips

Understanding stoichiometric calculations

📊 Chemical Disclaimer: This calculator assumes 100% reaction efficiency and ideal gas behavior at STP (22.4 L/mol). Results are for educational purposes.