Convert moles to equivalents or mEq using the ion charge or reaction n-factor, or equivalents back to moles, with optional molarity and equivalent weight.

The ion charge, or H⁺ or electrons transferred per formula unit in your reaction.

Optional settings
Blank omits concentrations.

Blank omits equivalent weight.

Related Calculators

Mole to Equivalent Formula

The following formula calculates reaction equivalents from moles and a specified equivalents-per-mole factor.

E = n × z

Variables:

  • E is the equivalents
  • n is the amount of substance in moles
  • z is the reaction n-factor in Eq/mol

Multiply moles by the n-factor for the specified reaction or ionic-charge basis. Do not infer this factor from a general valence label alone.

What is a Mole to Equivalent Conversion?

A mole to equivalent conversion expresses an amount of substance on a specified reaction basis. The factor depends on the process: for example, the number of H⁺ transferred in neutralization, electrons transferred in redox, or magnitude of ionic charge. The same substance can have different factors in different reactions. Eq/L (historically normality, N) and equivalent weight must use that same stated basis.

How to Calculate Mole to Equivalent?

The following steps outline how to calculate the Mole to Equivalent conversion.

  1. First, determine the amount of substance in moles (n).
  2. Next, determine the equivalents-per-mole n-factor (z) for the stated reaction.
  3. Next, calculate the equivalents using E = n * z.
  4. Finally, calculate the Mole to Equivalent conversion.
  5. 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.

Moles (n) = 2 mol

Reaction n-factor (z) = 3 Eq/mol; E = 2 × 3 = 6 Eq for that specified reaction.