Molarity & Dilution Calculator

Precision tools for solution preparation, concentration conversion, and serial dilution design.

Calculate Mass from Volume & Concentration

Enter the desired concentration, formula weight, and target volume to find the exact mass of solute needed.

Mass (g) = Concentration (M) × Volume (L) × Formula Weight (g/mol)
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Calculate Molarity from Mass & Volume

Determine the molar concentration of a solution given the dissolved mass, molecular formula weight, and final volume.

Molarity (M) = Mass (g) ÷ [Formula Weight (g/mol) × Volume (L)]
Quick-fill from database:

Serial Dilution Calculator

Design a step-wise dilution series. Set your starting concentration, dilution factor, and steps to generate a complete protocol table.

At each step: transfer the indicated volume from the previous tube into fresh diluent. Concentration reduces by the dilution factor at every step.

Frequently Asked Questions

How do I calculate the mass of solute needed for a molar solution?

Use the formula: Mass (g) = Molarity (M) x Volume (L) x Formula Weight (g/mol). Our Molarity Calculator performs this calculation automatically — enter your desired concentration, volume, and select the chemical from our 70+ compound database.

How do I calculate molarity from mass?

Molarity (M) = Mass (g) / (Formula Weight (g/mol) x Volume (L)). Switch to the Molarity tab in our calculator, enter the mass of solute, formula weight, and solution volume to get the molar concentration.

What is a serial dilution and how do I calculate it?

A serial dilution is a stepwise dilution of a substance in solution, where each step uses the same dilution factor. Our Serial Dilution Calculator generates the complete dilution protocol with volumes and concentrations for each step.

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