Convert meq/L to mg/L or mg/L to meq/L for calcium, potassium, sodium, chloride and other common ions or salts, or enter your own molar mass and charge.
| meq/L to mg/L | mg/L to meq/L |
|---|---|
| 0.5 meq/L = 11.49 mg/L | 10 mg/L = 0.435 meq/L |
| 1 meq/L = 22.99 mg/L | 25 mg/L = 1.087 meq/L |
| 1.5 meq/L = 34.48 mg/L | 50 mg/L = 2.175 meq/L |
| 2 meq/L = 45.98 mg/L | 75 mg/L = 3.262 meq/L |
| 3 meq/L = 68.97 mg/L | 100 mg/L = 4.350 meq/L |
| 4 meq/L = 91.96 mg/L | 150 mg/L = 6.525 meq/L |
| 5 meq/L = 114.95 mg/L | 200 mg/L = 8.700 meq/L |
| 10 meq/L = 229.90 mg/L | 250 mg/L = 10.874 meq/L |
| 15 meq/L = 344.85 mg/L | 300 mg/L = 13.049 meq/L |
| 20 meq/L = 459.80 mg/L | 500 mg/L = 21.749 meq/L |
| Formulas: mg/L = (meq/L × M) ÷ z and meq/L = (mg/L × z) ÷ M. Here M = 22.98976928 g/mol (≈ mg/mmol) and z = 1 (Na+). | |
| meq/L to mg/L | mg/L to meq/L |
|---|---|
| 0.5 meq/L = 10.02 mg/L | 10 mg/L = 0.499 meq/L |
| 1 meq/L = 20.04 mg/L | 25 mg/L = 1.248 meq/L |
| 2 meq/L = 40.08 mg/L | 50 mg/L = 2.495 meq/L |
| 3 meq/L = 60.12 mg/L | 75 mg/L = 3.743 meq/L |
| 4 meq/L = 80.16 mg/L | 100 mg/L = 4.990 meq/L |
| 5 meq/L = 100.20 mg/L | 150 mg/L = 7.485 meq/L |
| 10 meq/L = 200.39 mg/L | 200 mg/L = 9.981 meq/L |
| 15 meq/L = 300.59 mg/L | 250 mg/L = 12.476 meq/L |
| 20 meq/L = 400.78 mg/L | 400 mg/L = 19.961 meq/L |
| 30 meq/L = 601.17 mg/L | 500 mg/L = 24.951 meq/L |
| Formulas: mg/L = (meq/L × M) ÷ z and meq/L = (mg/L × z) ÷ M. Here M = 40.078 g/mol (≈ mg/mmol) and z = 2 (Ca2+). | |
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meq/L to mg/L Conversion Formula
The following formula is used to convert milliequivalents per liter (meq/L) to milligrams per liter (mg/L).
Variables:
- mg/L is the concentration in milligrams per liter
- mEq/L is the concentration in milliequivalents per liter
- Molar Mass is the molar mass of the substance in milligrams per millimole (mg/mmol)
- Valence is the absolute ionic charge number, or the explicitly specified equivalent factor for a reaction
To convert meq/L to mg/L, multiply mEq/L by molar mass in g/mol (numerically mg/mmol), then divide by the applicable equivalent factor. Reverse conversion: mEq/L = mg/L × factor / molar mass. For ions, the factor is absolute charge; other chemical or reaction bases must be specified explicitly. This does not infer salt mass, total dissolved solids, water hardness or a clinical dose.
What is mEq/L?
Milliequivalents per liter (meq/L) is a unit of concentration often used in chemistry and medicine to express the amount of a substance in a solution. It takes into account the chemical valence of the ions present in the solution, providing a more accurate measure of the reactive capacity of the ions than weight alone.
How to Calculate mg/L from meq/L?
The following steps outline how to convert the concentration from meq/L to mg/L.
- First, determine the concentration in milliequivalents per liter (meq/L).
- Next, determine the molar mass of the substance in milligrams per millimole (mg/mmol).
- Next, determine the valence of the ion.
- Use the formula mg/L = meq/L * (Molar Mass / Valence) to calculate the concentration in mg/L.
- After inserting the variables 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.
Concentration in meq/L = 5 meq/L
Molar Mass of the substance = 24.305 mg/mmol (Magnesium)
Valence of the ion = 2 (Magnesium). Result: 5 × 24.305 / 2 = 60.7625 mg/L.
