mEq to mg calculator


Free online mEq to mg calculator – Convert milliequivalents (meq) to milligrams (mg), simply Enter the mEq and select substance then click the calculate button.

mEq to mg Formula

To convert milliequivalents (mEq) to milligrams (mg), you can use the following formula:

mg = mEq * (At Wt / V)


  • mg = milligrams
  • mEq = milliequivalent
  • At Wt = Atomic Weight or molecular weight
  • V= Valance number

How to convert mEq to mg?

To convert milliequivalents (mEq) to milligrams (mg), you need to know the Atomic weight and valence of the substance

Here’s a step-by-step guide:

  • Select the substance : (eg – Mg, Zn)
  • Next, look up the atomic weight of the substance (use the periodic table)
  • Next, Determine the valence (ex – valence of magnesium is 2)
  • Next, use the above formula

Solved Example

Example – 2 mEq of sodium ions (Na⁺), and you want to convert it to milligrams


  • milliequivalent = 2 mEq
  • Atomic Weight of sodium (Na) = 22.99 g/mol
  • Valence of sodium (Na) = 2

Put all values into the formula

mg = 2 * (22.99 / 1) = 2 * 22.99 = 45.98 mg

Therefore, 2 mEq of sodium ions is equivalent to 45.98 mg of sodium

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