Theoretical yield calculator

Convert a known limiting-reactant amount to product using the balanced-equation coefficient ratio.

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Limiting-reactant amount (mol)

Reactant coefficient

More inputs and assumptions

Product coefficient

Product molar mass (g/mol)

Answer

…

Convert a known limiting-reactant amount to product using the balanced-equation coefficient ratio.

More results

Precision and calculation record

Decimal places in numeric results and text downloads

Rounding changes displayed numbers, not the calculation. Text, fractions, matrices and CSV schedules keep their own formatting. Automatic keeps up to 12 significant digits, with money shown to cents where applicable.

Step-by-step calculation

Inputs are substituted below. Each line evaluates the next operation; intermediate values are displayed to 12 significant digits while the calculation uses full precision.

Saved scenario

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Formula and assumptions

Product moles = limiting reactant moles × product coefficient/reactant coefficient; mass = moles × product molar mass. You must identify the limiting reactant and balance the equation first. Does not assume quantitative reaction in practice.

Automatic precision shows numbers to 12 significant digits. Thousands separators such as 1,000 are accepted; use a dot for decimals.

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Updated 2026-09-26

Using Theoretical yield calculator

Convert a known limiting-reactant amount to product using the balanced-equation coefficient ratio.

Next: Percent yield calculator

A worked example

Example inputs: limiting-reactant amount (mol) = 2, reactant coefficient = 1, product coefficient = 2, product molar mass (g/mol) = 18. Theoretical product mass (g) = 72.

Before you use the result

Example results for limiting-reactant amount (mol)

These examples use Reactant coefficient: 1; Product coefficient: 2; Product molar mass (g/mol): 18. They are reference calculations, not recommended settings.

Limiting-reactant amount (mol)	Theoretical product mass (g)
1	36
2	72
4	144

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