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Molarity Calculator

Molarity is the concentration of a solution expressed as moles of solute per liter of solution, and it is one of the most used quantities in chemistry. This calculator uses the relationship that molarity equals moles divided by volume in liters, and it solves for whichever value you leave blank. Enter any two of molarity, moles and volume and it computes the third, which is exactly what you need when preparing a solution to a target concentration, diluting a stock, or working through titration problems. It is a reliable companion for lab prep, homework and quick bench checks. Volume is entered in liters and results appear the instant you finish typing. Every calculation runs locally in your browser, so your work stays on your device and is available offline.

How to use Molarity Calculator

  1. Enter any two of molarity, moles of solute, and solution volume.
  2. Leave the unknown field blank.
  3. Read the calculated third value.

Frequently asked questions

What formula does this molarity calculator use?

Molarity M equals moles of solute divided by liters of solution. Enter any two of molarity, moles, or volume to solve for the third.

What units should I use?

Molarity is in moles per liter, the amount of solute is in moles, and volume is in liters. Convert milliliters to liters before entering.

Does it account for the solute mass?

This tool works in moles, not grams. Convert grams to moles using molar mass first if you only know the mass.

What is Molarity Calculator?

Molarity is the concentration of a solution expressed as moles of solute per liter of solution, and it is one of the most used quantities in chemistry. This calculator uses the relationship that molarity equals moles divided by volume in liters, and it solves for whichever value you leave blank.

Is Molarity Calculator free to use?

Yes. Molarity Calculator is completely free, with no sign-up and no usage limits.

Does Molarity Calculator work in a web browser?

Yes. Molarity Calculator runs in any modern web browser. There is nothing to download or install.

Is my data private with Molarity Calculator?

Yes. Molarity Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.