The mg to mEq converter takes into account the molecular weight and valence of the ion to perform accurate conversions.
When converting potassium (K+) from mg to mEq, the mg to Milliequivalents calculator uses potassium’s molecular weight (39.1 g/mol) and valence (+1) to determine that 39.1 mg of potassium equals 1 mEq.
mg to mEq Calculator
| Electrolyte | mg Amount | Molecular Weight (g/mol) | Valence | mEq Result |
|---|---|---|---|---|
| Potassium (K+) | 195.5 | 39.1 | +1 | 5.0 |
| Calcium (Ca2+) | 401 | 40.1 | +2 | 20.0 |
| Magnesium (Mg2+) | 243 | 24.3 | +2 | 20.0 |
| Sodium (Na+) | 460 | 23.0 | +1 | 20.0 |
| Chloride (Cl-) | 354 | 35.5 | -1 | 10.0 |
| Bicarbonate (HCO3-) | 168 | 61.0 | -1 | 2.75 |
| Phosphate (PO4^3-) | 312 | 94.97 | -3 | 3.29 |
| Sulfate (SO4^2-) | 480 | 96.06 | -2 | 5.00 |
| Iron (Fe2+) | 280 | 55.85 | +2 | 10.00 |
| Zinc (Zn2+) | 300 | 65.38 | +2 | 9.15 |
| Copper (Cu2+) | 200 | 63.55 | +2 | 6.28 |
| Lithium (Li+) | 300 | 6.94 | +1 | 43.2 |
| Sodium Bicarbonate (NaHCO3) | 420 | 84 | +1 | 5.0 |
Explanation of Electrolytes
- Chloride (Cl-): Essential for maintaining fluid balance and is often found in table salt.
- Bicarbonate (HCO3-): Plays a crucial role in maintaining pH balance in the body.
- Phosphate (PO4^3-): Important for energy production and bone health.
- Sulfate (SO4^2-): Involved in various biochemical processes, including detoxification.
- Iron (Fe2+): Vital for oxygen transport in the blood.
- Zinc (Zn2+): Important for immune function and enzyme activity.
- Copper (Cu2+): Plays a role in iron metabolism and neurological function.
- Lithium (Li+): Often used in psychiatric treatment, particularly for bipolar disorder.
- Sodium Bicarbonate (NaHCO3): Commonly used to manage acidosis and as an antacid.
mg to mEq Conversion Formula
The formula for converting mg to mEq is:
mEq = (mg ÷ molecular weight) × valence
Where
- mg: mass of the ion in milligrams
- molecular weight: mass per mole of the substance in g/mol
- valence: electrical charge of the ion
- Sodium (Na⁺): Molecular Weight = 23 g/mol, Valence = 1
- Potassium (K⁺): Molecular Weight = 39.1 g/mol, Valence = 1
- Calcium (Ca²⁺): Molecular Weight = 40 g/mol, Valence = 2
- Magnesium (Mg²⁺): Molecular Weight = 24.3 g/mol, Valence = 2
To convert 100 mg of calcium (Ca2+) to mEq:
Molecular weight of Ca2+ = 40.1 g/mol
Valence = +2
mEq = (100 ÷ 40.1) × 2 = 4.99 mEq
How to Convert mg to mEq?
Converting mg to mEq needs simple steps:
- Identify the ion and its properties
- Look up the molecular weight
- Determine the valence
- Apply the conversion formula
Using magnesium (Mg2+):
Given: 120 mg of Mg2+
Molecular weight = 24.3 g/mol
Valence = +2
mEq = (120 ÷ 24.3) × 2 = 9.88 mEq
How Many mg is in a mEq?
The mg per mEq varies for each electrolyte. Here are common values:
- Sodium (Na+): 23 mg = 1 mEq
- Potassium (K+): 39.1 mg = 1 mEq
- Calcium (Ca2+): 20.05 mg = 1 mEq
- Magnesium (Mg2+): 12.15 mg = 1 mEq
How Many Milligrams is 10 mEq?
For potassium (K+):
- 1 mEq = 39.1 mg
- 10 mEq = 39.1 × 10 = 391 mg
What Does 20 mEq Equal in mg?
For sodium (Na+):
- 1 mEq = 23 mg
- 20 mEq = 23 × 20 = 460 mg
How Many Grams is a mEq?
To convert mEq to grams, divide the mg/mEq by 1000:
- K+: 39.1 mg/mEq = 0.0391 g/mEq
- Na+: 23 mg/mEq = 0.023 g/mEq
Potassium Conversions
- 99 mg K+ to mEq: $$99 ÷ 39.1 = 2.53$$ mEq
- 600 mg KCl to mEq: $$600 ÷ 74.5 = 8.05$$ mEq
- 1080 mg K-citrate to mEq: $$(1080 ÷ 324.4) × 3 = 10$$ mEq
Sodium Bicarbonate Conversion
For NaHCO3:
- Molecular weight = 84 g/mol
- 1 mEq = 84 mg
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