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Free mass percent calculator & concentration calculator. Calculate mass percent, mass fraction, and concentration with step-by-step solutions. Our calculator handles solution chemistry with comprehensive analysis.
Last updated: February 2, 2026
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Mass of the substance dissolved in the solution
Mass of the dissolving medium (optional if total mass is provided)
Total mass of the solution (optional if solvent mass is provided)
This is a moderately concentrated solution.
Moderate concentrations are common in many chemical processes and laboratory preparations.
Formula
Mass % = (Solute/Total) × 100
Uses mass ratios to determine solution concentration
Properties
Multiple Calculations
Calculates mass percent, mass fraction, and concentration
Formula
Mass Fraction = Solute/Total
Provides decimal representation of solute concentration
Process
Step-by-Step
Provides detailed step-by-step process for mass percent calculation
Composition
Chemical Analysis
Analyzes mass percent composition of chemical compounds
Formula
Complete Analysis
Applies mass percent formula with comprehensive solution analysis
For solution with 5g solute and 95g solvent:
Mass Percent
5.00%
Mass Fraction
0.05
Concentration
50.00 g/L
Our mass percent calculator uses fundamental solution chemistry formulas adapted for concentration analysis. The calculation applies mass percent, mass fraction, and concentration formulas to ensure accurate solution analysis with comprehensive chemical explanations.
1. Identify solute and solution masses2. Calculate total solution mass3. Apply mass percent formula4. Calculate mass fraction5. Determine concentrationThis process ensures accurate mass percent analysis by systematically applying solution chemistry formulas and providing comprehensive chemical explanations.
Shows solute, solvent, and solution mass relationships
Mass percent calculations are based on solution chemistry principles. The mass percent formula relates the mass of solute to the total mass of solution, providing a concentration measure that's independent of temperature and pressure. This makes it ideal for many chemical applications.
Need help with other chemistry calculations? Check out our partial pressure calculator and molarity calculator.
Get Custom Calculator for Your PlatformResult: Mass Percent = 5.00%, Mass Fraction = 0.05, Concentration ≈ 50 g/L
This represents a moderately dilute salt solution commonly used in medical applications.
10g sugar in 200g water: Mass % = 4.76%
Mass fraction = 0.048
20g alcohol in 80g water: Mass % = 20%
Mass fraction = 0.20
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