Corrected Magnesium Calculator

Written by Great Medico

Updated September 24, 2026 •2 min read

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Fluid and electrolyte decisions often start with a small equation and a careful unit check. Corrected Magnesium Calculator makes that calculation visible without pretending the number replaces bedside assessment.

What this calculator does

Corrected Magnesium Calculator uses Patient magnesium and Albumin to calculate corrected magnesium. Where supported, it also shows Albumin converted so the primary result is easier to check. It follows the exact field flow and engine behavior in this plugin rather than describing a different calculator with the same name. Fluid and electrolyte formulas are sensitive to units, timing, ongoing losses, kidney function, and rapidly changing physiology. They are most useful as structured estimates alongside repeat measurements and bedside assessment.

How to use it

Enter or select Patient magnesium and Albumin. Use the units offered by the calculator and keep paired laboratory or treatment values from the same clinical episode whenever the formula assumes that. If an entry is unknown, do not substitute a guess simply to obtain a number.

How the calculation works

The engine converts albumin from g/dL to g/L, then applies corrected magnesium = measured magnesium + 0.005 × (40 − albumin in g/L). The result is reported in mg/dL.

Example

Using the sample values prefilled in this calculator, the primary result is 1.55 mg/dL (Corrected magnesium) and Albumin converted is 30 g/L. This example demonstrates the plugin’s own calculation path; replace the sample inputs with verified values before interpreting a real result.

How to interpret the result

Read the output as corrected magnesium from the implemented formula. Compare it with measured values, volume status, ongoing inputs/losses, and serial trends; treatment decisions should not rely on the calculator in isolation.

Limitations and notes

Albumin-adjusted magnesium is not a universally standardized clinical correction. The equation is a mathematical estimate and should not replace a measured magnesium result or clinical assessment.