Molarity Calculator
Calculate molarity, molality, normality & PPM
📐 Key Chemistry Formulas
Molarity (M) = mol / L
Molality (m) = mol / kg solvent
Normality (N) = M × n-factor
PPM = mg / L = (g/mL) × 10⁶
Dilution: C₁V₁ = C₂V₂
Moles = mass / molar mass
Quick Guide
Molarity (M)
Moles of solute per liter of solution. Most common unit in chemistry labs.
Molality (m)
Moles of solute per kg of solvent. Temperature-independent.
Normality (N)
Molarity × n-factor. Used in titrations.
PPM
Parts per million (mg/L). Used for trace concentrations.
Dilution
C₁V₁ = C₂V₂ relates initial and final concentrations and volumes.
FAQ
Molarity vs Molality difference?
Molarity uses solution volume (L), molality uses solvent mass (kg). Molality is temperature-independent.
How to convert M to PPM?
PPM = Molarity × Molar Mass × 1000
What is n-factor?
Number of H⁺ (acids), OH⁻ (bases), or electrons transferred (redox).
How to use dilution formula?
C₁V₁ = C₂V₂. Know 3 values, solve for the 4th.
Is this calculator free?
Yes, completely free for all users.