Stoichiometry Calculator
Determine reactant & product quantities, limiting reagent, percent yield, and more — instantly from your balanced chemical equations.
1. Enter Balanced Chemical Equation
2. Specify Known Quantities of Reactants
3. Products & Calculations
4. Percent Yield Calculator (Optional)
Chemistry Concepts & Stoichiometry Guide
- Stoichiometry relates quantities of reactants and products in a balanced equation using mole ratios.
- Limiting reagent: The reactant that gets used up first, capping the amount of product formed.
- Percent yield: Ratio of actual yield to theoretical yield.
- Balancing chemical equations ensures the conservation of mass and atoms.
- Common inputs: masses (g), moles (mol); calculations require molar masses.
Product/Yield Chart
⚖️ Stoichiometry Calculator: Balance Reactions, Master Chemistry
Struggling with balancing chemical equations or figuring out how much product a reaction will produce? The Stoichiometry Calculator is a must-have tool for every chemistry student, teacher, or lab technician.
By simplifying complex mole-to-mole relationships in chemical reactions, this calculator saves you time, improves accuracy, and deepens your understanding of reaction dynamics.
🧪 What Is Stoichiometry?
Stoichiometry is the quantitative relationship between the amounts of reactants and products in a chemical reaction. It helps answer questions like:
- How much product will I get from a certain amount of reactant?
- What’s the limiting reagent?
- How much excess reagent is left over?
Understanding stoichiometry is essential in fields such as biochemistry, pharmaceuticals, industrial chemistry, and environmental science.
🔍 How the Stoichiometry Calculator Works
Just enter a balanced chemical equation and the amount of one substance. The calculator instantly:
- Identifies all compounds in the equation.
- Extracts mole ratios from the balanced equation.
- Converts mass ↔ moles using molar masses.
- Computes theoretical yield, limiting reagent, and excess.
Example input:
CH₄ + 2O₂ → CO₂ + 2H₂O
If you input 16g of CH₄ (1 mole), the calculator tells you:
- 2 moles of O₂ are needed (64g)
- 1 mole of CO₂ is produced (44g)
- 2 moles of H₂O are produced (36g)
📊 Image Preview
This graph visualizes the stoichiometric mole ratios for a typical combustion reaction.
⚙️ Why Use a Stoichiometry Calculator?
| Feature | Benefit |
|---|---|
| Auto-balancing | Saves time and avoids manual errors |
| Mole-mass conversions | Quick calculations using molar mass |
| Limiting reagent detection | Maximize efficiency of reactions |
| Predicts product yield | Useful for lab planning & analysis |
✅ Example Reactions
1. Combustion of Ethane
C₂H₆ + 3.5O₂ → 2CO₂ + 3H₂O
Input 30g of C₂H₆ → Get grams of CO₂ and H₂O formed.
2. Neutralization Reaction
HCl + NaOH → NaCl + H₂O
Input 50 mL of 1M HCl → Find amount of NaOH needed.
📚 Real-Life Applications
- 🏭 Industrial Chemistry: Optimize batch processing.
- 💊 Pharmaceuticals: Calculate precise formulations.
- 🧫 Education: Help students visualize mole relationships.
- 🧪 Research Labs: Determine expected yields before synthesis.
🌐 External References
These resources are ideal for learners who want to explore the concept further.
🔎 features Included
- Stoichiometry Calculator
- Chemical Equation Balancer
- Limiting Reagent Calculator
- Reaction Yield Calculator
- Mass to Mole Conversion Tool
- Stoichiometry Step by Step
- Mole Ratio Calculator
- Theoretical Yield Calculator
🧮 Summary Table
| Input | Description |
|---|---|
| Chemical Equation | Balanced or unbalanced |
| Mass / Moles | Known quantity of any substance |
| Output | Required moles/mass of all other compounds |
| Features | Limiting reagent, excess reagent, product yield |
🧠 Final Thoughts
The Stoichiometry Calculator makes one of chemistry’s most complex topics approachable and practical. Whether you’re doing homework, mixing reagents, or scaling industrial processes, this calculator ensures that you’re accurate every time.