Molarity Calculator

Calculate molarity, moles or volume of a solution.

Quick answer: Molarity Calculator: Calculate molarity, moles or volume of a solution. Everything runs in your browser, so nothing you enter is uploaded or stored.

Mass of solute (g)

Molar mass (g/mol)

Volume of solution (L)

How to use Molarity Calculator

Enter your values in the fields.
The results update instantly as you type.
Note or copy the numbers you need.

Features

Instant results
Free, no signup
Runs in your browser, nothing is uploaded
Works on phone and desktop

Formula

M = (mass / molar mass) / volume.

Worked example

58.44 g of NaCl (molar mass 58.44) in 1 L is a 1 M solution.

Frequently asked questions

What is molarity?

Moles of solute per litre of solution: M = n / V.

How do I find moles?

moles = mass / molar mass.

Is the Molarity Calculator free?

Yes. It is free, needs no signup and works on any device.