Molarity & Dilution Calculator

Compute molarity, molality, dilution targets, and a simple serial-dilution chain.

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What This Calculator Does

This calculator converts between solute mass and moles, computes solution concentration, and estimates target volumes for direct dilution or repeated serial dilution steps.

It combines Known Solute Amount, Solute Mass, Moles of Solute, Molar Mass to estimate Molarity, Molality, Moles of Solute.

Formula & Method

Core equations:

n=\frac{m}{M}

, molarity is

C=\frac{n}{V}

, molality is

m=\frac{n}{m_{solvent}}

, and dilution follows

C_1V_1=C_2V_2

Notation used in the formulas: $R$ = Molarity; $x_{1}$ = Known Solute Amount; $x_{2}$ = Solute Mass; $x_{3}$ = Moles of Solute; $x_{4}$ = Molar Mass; $x_{5}$ = Solution Volume; $x_{6}$ = Solvent Mass.

Method summary: inputs are normalized to consistent units, core equations are evaluated, then secondary values are derived and rounded for display.

Use it when preparing solutions in the lab or planning how to reach a lower concentration through one-step or serial dilution.

Reference Book

Chemistry: The Central Science

Theodore E. Brown, H. Eugene LeMay, Bruce E. Bursten, Catherine Murphy, Patrick Woodward, and Matthew E. Stoltzfus · Pearson

A widely used general chemistry text covering stoichiometry, gases, solutions, acids and bases, and electrochemistry.

View Book

Inputs Used

Known Solute Amount: Used directly in the calculation.
Solute Mass: Used directly in the calculation.
Moles of Solute: Used directly in the calculation.
Molar Mass: Used directly in the calculation.
Solution Volume: Used directly in the calculation.
Solvent Mass: Used directly in the calculation.
Target Molarity: Used directly in the calculation.
Serial Dilution Factor: Used directly in the calculation.
Serial Dilution Steps: Used directly in the calculation.

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