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Molarity Calculator

Find molarity, or how much solute to weigh out to make a solution.

  • Free
  • No sign-up
  • Nothing is sent or stored
Find
g
L

Result

Molarity
0.1 mol/L
Moles of solute
0.1 mol
Molar mass
58.44 g/mol
Concentration
5.844 g/L
How it was calculated
  1. n = 5.844 g ÷ 58.44 g/mol = 0.1 mol
  2. M = n ÷ V = 0.1 ÷ 1

The calculation happens instantly in your browser. The numbers you enter are not sent to our servers or saved.

How to use the Molarity Calculator

  1. Choose what to find.
  2. Type the solute's formula.
  3. Enter the other values and read the result.

What does this tool do?

Molarity is moles of solute per litre of solution. To make 1 L of 0.1 M sodium chloride you need 0.1 mol, which is 5.844 g of NaCl.

When preparing a solution, dissolve the solute in less solvent first, then top up to the final volume.

Why use it?

  • Three modes for lab prep.
  • Molar mass from the formula.
  • g/L concentration too.

The formula

M = n ÷ V
mass = M × V × molar mass

Privacy

The calculation happens instantly in your browser. The numbers you enter are not sent to our servers or saved. There's no account to create and nothing to install.

Last reviewed by the M2Toolkit team.

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