Convert mEq to mg, or mg to mEq, for potassium, sodium, calcium, magnesium and salts such as KCl, or enter your own molar mass and valence.
| K⁺ mEq to mg | K⁺ mg to mEq |
|---|---|
| 1 mEq = 39.1 mg | 99 mg = 2.532 mEq |
| 2 mEq = 78.2 mg | 250 mg = 6.394 mEq |
| 5 mEq = 195.5 mg | 391 mg = 10.000 mEq |
| 8 mEq = 312.8 mg | 500 mg = 12.788 mEq |
| 10 mEq = 391.0 mg | 750 mg = 19.182 mEq |
| 12 mEq = 469.2 mg | 1000 mg = 25.575 mEq |
| 15 mEq = 586.5 mg | 1500 mg = 38.363 mEq |
| 20 mEq = 782.0 mg | 2000 mg = 51.151 mEq |
| 24 mEq = 938.4 mg | 2300 mg = 58.824 mEq |
| 25 mEq = 977.5 mg | 3000 mg = 76.726 mEq |
| 30 mEq = 1173.0 mg | 3519 mg = 90.000 mEq |
| 40 mEq = 1564.0 mg | 4000 mg = 102.302 mEq |
| 45 mEq = 1759.5 mg | 4692 mg = 120.000 mEq |
| 50 mEq = 1955.0 mg | 4700 mg = 120.205 mEq |
| 60 mEq = 2346.0 mg | 5000 mg = 127.877 mEq |
| 80 mEq = 3128.0 mg | 6000 mg = 153.453 mEq |
| 90 mEq = 3519.0 mg | 7000 mg = 179.028 mEq |
| 100 mEq = 3910.0 mg | 7820 mg = 200.000 mEq |
| 120 mEq = 4692.0 mg | 8000 mg = 204.604 mEq |
| 200 mEq = 7820.0 mg | 10000 mg = 255.754 mEq |
| Formula (K⁺): mg = mEq × 39.1 and mEq = mg ÷ 39.1. | |
| Na⁺ mEq to mg | Na⁺ mg to mEq |
|---|---|
| 10 mEq = 229.90 mg | 500 mg = 21.749 mEq |
| 50 mEq = 1149.50 mg | 1000 mg = 43.497 mEq |
| 100 mEq = 2299.00 mg | 1500 mg = 65.246 mEq |
| 154 mEq = 3540.46 mg | 2300 mg = 100.043 mEq |
| 200 mEq = 4598.00 mg | 3000 mg = 130.492 mEq |
| Formula (Na⁺): mg = mEq × 22.99 and mEq = mg ÷ 22.99. Values are rounded; 22.99 is a conventional approximate molar mass. | |
mEq to mg Conversion Formula
The formula to convert milliequivalents to milligrams is:
Variables:
- mg is the mass in milligrams
- meq is the amount in milliequivalents
- Atomic/Molecular Weight is the atomic or molecular weight in mg/mmol
- Valence is the absolute ionic charge number or equivalent factor for one specified salt component
To convert mEq to mg, multiply mEq by molar mass in g/mol (numerically mg/mmol), then divide by the absolute ionic charge or specified equivalent factor. The reverse is mEq = mg × factor / molar mass. Match the exact species and hydration state; elemental-ion mass differs from salt mass. These conversions do not select a clinical dose.
What is a Milliequivalent?
A milliequivalent (meq) is a unit of measure that reflects the amount of a substance based on the number of ions or electrons that the substance can supply in a chemical reaction. It is commonly used in chemistry and medicine, particularly in the context of electrolyte concentrations in fluids.
How to Calculate Milligrams from Milliequivalents?
The following steps outline how to calculate milligrams from milliequivalents.
- First, determine the amount in milliequivalents (meq).
- Next, determine the absolute ionic charge or the equivalent factor for the specified salt component.
- Then, determine the atomic or molecular weight in mg/mmol.
- Use the formula: mg = (meq * Atomic/Molecular Weight) / Valence.
- Finally, calculate the mass in milligrams (mg).
- 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.
Milliequivalents (meq) = 5 meq
Valence = 2
Atomic or Molecular Weight (mg/mmol) = 24.305 (elemental magnesium). Result: 5 × 24.305 / 2 = 60.7625 mg.
