Solution Mass Percentage Calculator

How the solution mass percentage calculator works

Mass percentage = solute mass ÷ total solution mass × 100. Both masses must use compatible units, and solute cannot exceed total solution mass. At zero total mass and zero solute mass, the fraction is unavailable rather than a defined zero percent.

Total solution mass includes solute and solvent; it is not solvent mass alone. This relation does not calculate volume percentage, account for a chemical reaction, identify composition or prescribe a preparation or dose. No mass-to-volume conversion is made.

Quantities use the stated units and finite bounded inputs. Whole purchases round up under the documented model; cost components round half-up to cents before totals are summed. Undefined ratios stay unavailable. π and logarithms use normal numeric precision. Display rounding does not alter the entered assumptions.

Worked example

5 mass units of solute in 100 total solution mass units is 5%. Increasing solute to 10 at the same total mass gives 10%.

Sources and assumptions

The source material explains the underlying calculation or pricing structure. Entered prices, costs, schedules and scenario choices are your assumptions; this tool does not obtain supplier quotes or predict actual results.

• Western Oregon University CH104 Chapter 7: Solutions