Solution & Molarity Calculator

Fill any known values, then click Calculate to solve for the unknown.

Molarity Calculator

Fill any two values — the third will be calculated.

M = n / V

Moles of solute (n)

mol

Volume of solution (V)

Molarity (M)

mol/L

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Result

Step-by-step

Dilution Calculator

Fill any three values — the fourth will be calculated.

C₁V₁ = C₂V₂

Stock Solution

C₁ / V₁

→ add solvent →

Diluted Solution

C₂ / V₂

Initial concentration (C₁)

mol/L

Initial volume (V₁)

Final concentration (C₂)

mol/L

Final volume (V₂)

Reset

Result

Step-by-step

Mass ↔ Moles Converter

Enter mass and molar mass to find moles, or moles and molar mass to find mass.

n = m / M_r | m = n × M_r

Quick molar mass reference — click to fill M_r

Mass (m)

Molar mass (M_r)

g/mol

Moles (n)

mol

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Result

Step-by-step

Percent Concentration

Choose a concentration type and fill the known values.

% (m/v) = (m_solute / V_solution) × 100

Mass of solute

Volume of solution

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Result

Step-by-step