Concentration Calculator
Calculate solution concentrations using molarity, molality, normality, and mass percent with dilution and mixing calculations.
Enter Solution Data
mol
mol
mol
g
g
M
mL
M
M
mL
M
mL
Results
Enter solution data to calculate concentration
Concentration Units
Molarity (M)
M = moles of solute / liters of solution
- • Most common unit
- • Temperature dependent
- • Volume-based
- • Used in titrations
Molality (m)
m = moles of solute / kg of solvent
- • Temperature independent
- • Mass-based
- • Used in colligative properties
- • More accurate for solutions
Additional Units
Normality (N)
- • N = equivalents / liters
- • Used in acid-base titrations
- • Depends on reaction
- • N = M × equivalents per mole
Mass Percent (%)
- • % = (mass solute / mass solution) × 100
- • Temperature independent
- • Easy to understand
- • Used in commercial products
Dilution and Mixing
Dilution Formula
C₁V₁ = C₂V₂
- • C₁ = Initial concentration
- • V₁ = Initial volume
- • C₂ = Final concentration
- • V₂ = Final volume
Mixing Solutions
- • Weighted average concentration
- • Cₘᵢₓ = (C₁V₁ + C₂V₂) / (V₁ + V₂)
- • Total moles conserved
- • Volume additive