Calculate molarity to normality conversions, solute mass, equivalent weight, and stock dilution volume for chemical solution formulations.

M to Normality Calculator

Enter known values, then click Calculate.

M ⇄ N
Mass Formula
Stock Dilution

Examples: HCl = 1, H₂SO₄ = 2, H₃PO₄ may be 1, 2, or 3 depending on the reaction.

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Molarity to Normality Formula

The following formula is used to calculate the normality for a given molarity and number of equivalents.

N = M * E

Variables:

  • N is the normality
  • M is the molarity
  • E is the number of equivalents

To calculate the normality, multiply the molarity by the number of equivalents.

Molarity to Normality Conversion Table (Equivalents = 1)
Molarity (M, mol/L) Normality (N, eq/L)
0.0010.001
0.0050.005
0.0100.010
0.0200.020
0.0500.050
0.1000.100
0.2000.200
0.2500.250
0.5000.500
0.7500.750
1.0001.000
1.5001.500
2.0002.000
2.5002.500
3.0003.000
4.0004.000
5.0005.000
6.0006.000
8.0008.000
10.00010.000
Assumes number of equivalents = 1 (monoprotic/monovalent). With E = 1: 1 M = 1 N. For other cases, N = M × equivalents.

What is Normality?

Normality (N) is a measure of concentration equivalent to molarity (M) but takes into account the number of equivalents of the solute. It is used in various chemical calculations, particularly in titration. Normality is defined as the number of gram equivalents of solute per liter of solution. It is a more specific measure compared to molarity because it considers the reactive capacity of the solute.

How to Calculate Normality?

The following steps outline how to calculate the Normality.

  1. First, determine the molarity (M) of the solution.
  2. Next, determine the number of equivalents (E) for the solute.
  3. Finally, calculate the normality using the formula N = M * E.
  4. After inserting the values and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

Molarity (M) = 2 M

Number of Equivalents (E) = 3