Formula
This calculator uses the equation below. Use it as a quick reference when checking setup before solving.
percent = (solute/solution) * 100Stoichiometry
Mass Percent Calculator
Relate solute mass, solution mass, and mass percent via percent = (solute / solution) * 100.
percent = (solute/solution) * 100
Run this calculator
Leave a nullable field blank to solve for it.
Variable glossary
Solute Mass (solute_mass)
Mass of solute (any mass unit).
Solution Mass (solution_mass)
Total solution mass in the same unit as solute_mass.
Percent (percent)
Mass percent of solute.
Frequently Asked Questions
What does the Mass Percent calculator solve?
It solves Mass Percent problems in stoichiometry using your provided inputs and computes unknown values when nullable fields are left blank.
Do I need to convert units before using this tool?
Use the unit toggles where available (for example K/C and L/mL). ChemGenius converts values to the calculator's base units automatically before solving.
Can I save this result in my workflow?
Yes. After computing a result, you can continue into ChemGenius workflows like protocol drafting or notes to keep your calculation context attached to downstream work.