CalculatorCast
Math Finance Health & Fitness Date & Time Unit Converters Computer Physics Chemistry Construction Engineering Statistics Education Everyday Life Biology Automotive Cooking & Food Sports & Fitness Real Estate Photography Electrical Agriculture Travel Business
All Calculators Favorites ()
English Español Français Deutsch Português Italiano Nederlands Polski Türkçe 日本語 한국어 Svenska Norsk Dansk Suomi עברית

Stoichiometry Calculator

Convert moles of one reactant/product to another using balanced equation mole ratios.

Introduction

Stoichiometry Calculator — Convert moles of one reactant/product to another using balanced equation mole ratios. Enter Moles of A, Coefficient of A, Coefficient of B to get an instant, accurate result.

Formula

Mole ratio conversion: moles of B = moles of A × (coefficient of B / coefficient of A), using the balanced equation's stoichiometric coefficients.

Step-by-step

  1. Enter the Moles of A.
  2. Enter the Coefficient of A.
  3. Enter the Coefficient of B.
  4. Click Calculate to see your result instantly.

Real-world example

Example: With Moles of A = 2, Coefficient of A = 2, Coefficient of B = 3, the Stoichiometry Calculator gives Moles B: 3.

Frequently Asked Questions

Why do I need a balanced equation first?
The mole-ratio conversion only works with the correct stoichiometric coefficients from a properly balanced chemical equation — unbalanced coefficients give wrong results.
Can I convert directly from mass instead of moles?
Convert mass to moles first (moles = mass / molar mass), then apply the mole ratio, then convert back to mass if needed.
What inputs does the Stoichiometry Calculator need?
You'll need to provide: Moles of A, Coefficient of A, Coefficient of B. All fields use sensible defaults, so you can see a working example immediately and then adjust the values to match your own numbers.
How accurate is the Stoichiometry Calculator?
The Stoichiometry Calculator applies the formula exactly as calculated — Mole ratio conversion: moles of B = moles of A × (coefficient of B / coefficient of A), using the balanced equation's stoichiometric coefficients. — so results are precise for the inputs you provide. Accuracy depends on entering correct, realistic input values.
Is the Stoichiometry Calculator free to use?
Yes, the Stoichiometry Calculator is completely free, requires no signup, and runs instantly in your browser.

About the Stoichiometry Calculator

The Stoichiometry Calculator uses a real, verifiable formula — Mole ratio conversion: moles of B = moles of A × (coefficient of B / coefficient of A), using the balanced equation's stoichiometric coefficients. — so results are accurate every time, not an approximation.