Formula
- Use the units shown beside each field.
- Results update automatically whenever you change an input.
- Displayed values use up to four decimal places, or scientific notation for very small or large numbers. Calculations use standard floating-point arithmetic; exact integer and fraction tools identify their own precision rules.
- Balanced-reaction coefficients and an already identified limiting reactant are required. Assumes complete conversion and 100% selectivity.
Example Calculation
- Limiting-reactant mass: 10 g
- Reactant molar mass: 20 g/mol
- Reactant coefficient: 1
- Product coefficient: 2
- Product molar mass: 30 g/mol
10 g of a 20 g/mol reactant yielding two moles of 30 g/mol product per mole gives 30 g.
Frequently asked questions
How do I use this calculator?
Enter limiting-reactant mass, reactant molar mass, reactant coefficient, product coefficient, product molar mass. The result updates automatically. Use Reset to restore the example values.
What method does it use?
product mass=(reactant mass/reactant molar mass) × (product coefficient/reactant coefficient) × product molar mass.. Balanced-reaction coefficients and an already identified limiting reactant are required. Assumes complete conversion and 100% selectivity.
Why might a rounded result differ?
The calculation keeps full numeric precision internally, then rounds the displayed result. Rounding intermediate steps by hand can produce a slightly different answer.
Are my inputs saved online?
No. This calculator processes your inputs in your browser. A recently used list stores only calculator names on this device, not your entered values.
Check the assumptions and units before using this result. Read about calculation methods.