Theoretical Yield Calculator

Calculate the theoretical yield of a product from moles of limiting reagent.

How It Works

Enter the moles of the limiting reagent, its stoichiometric coefficient, the product's coefficient, and the product's molar mass. The calculator computes the maximum possible mass of product.

Formula

Theoretical Yield (g) = moles of limiting reagent × (coeff product / coeff LR) × molar mass product

Examples

2 mol H2 (coeff 2), product H2O (coeff 2), MW 18.015 g/mol → 36.03 g theoretical yield

Frequently Asked Questions

What is theoretical yield?

Theoretical yield is the maximum amount of product that can form assuming complete reaction of the limiting reagent, with no losses. It is calculated from stoichiometry.

Why is actual yield less than theoretical yield?

Losses occur due to incomplete reactions, side reactions, product recovery steps (filtering, transferring), and measurement errors.

How do I find the molar mass of a product?

Sum the atomic masses of all atoms in the product formula. Use our Molar Mass Calculator tool for instant results.