Molarity Calculator

1

Mass from Volume & Concentration

mass = concentration × volume × MW

Concentration

Molecular Weight (g/mol)

Volume

Mass Required

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2

Volume from Mass & Concentration

volume = mass / (concentration × MW)

Mass

Molecular Weight (g/mol)

Desired Concentration

Volume to Prepare

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3

Molarity from Mass & Volume

molarity = mass / (MW × volume)

Mass

Molecular Weight (g/mol)

Volume

Concentration

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4

Moles from Mass

moles = mass / MW

Mass

Molecular Weight (g/mol)

Moles

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Common Molecular Weights

Buffers & Salts

Sugars

Detergents

Nucleotides

Reducing Agents

Other Reagents

Click any compound to autofill the MW field in the active calculator.

ℹ️ About This Calculator

This calculator helps you prepare solutions of a given molarity. All four calculators are independent and can be used in any order.

Tip: The results from one calculator can be used as inputs for another. Each calculator also shows the number of moles for easy reference.

Note: For proteins and peptides, use the molecular weight from your sequence analysis. The average molecular weight of amino acids is approximately 110 Da.