What this calculator does

Molarity is a common way to describe solution concentration in chemistry. It tells you how many moles of solute are present in each litre of solution.

Formula used

Molarity equals moles of solute divided by litres of solution.

How to read the result

A result of 0.5 M means 0.5 moles of solute per litre of solution.

Assumptions

  • Volume is entered in litres.
  • Uses final solution volume, not solvent volume before mixing.
  • Does not account for temperature or activity effects.

Sources and checks

This calculator uses a standard public formula. Where rules or thresholds can change, source links are listed on the relevant page.

Frequently asked questions

Is molarity the same as moles?

No. Moles measure amount of substance. Molarity measures that amount per litre of solution.