Lactate (Lactic Acid) Unit Converter

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Lactate (the anion of Lactic Acid) is a metabolic byproduct primarily generated by the breakdown of glucose during anaerobic metabolism (glycolysis without sufficient oxygen). While the liver can recycle lactate, excessive production leads to Lactic Acidosis.

Lactate is a critical biomarker used to diagnose tissue hypoperfusion (inadequate blood flow and oxygen delivery) common in shock, trauma, and sepsis. Elevated lactate levels (> 4.0 mmol/L) are associated with poor prognosis and require immediate medical intervention (resuscitation). Samples require special handling (on ice) to prevent artifactual production in vitro. This converter facilitates switching between the SI unit (mmol/L) and the conventional mass unit (mg/dL).

SI Units

Recommended (Critical Care)

mmol/L

µmol/L

Millimoles per liter (Standard International).

Conventional Units

mg/dL

g/L

mg/L

mg%

Clinical Context

Reference Range: Normal venous lactate is typically 0.5–2.0 mmol/L (4.5–18.0 mg/dL).

Lactate > 4.0 mmol/L is associated with organ dysfunction and requires aggressive fluid resuscitation (Type A Lactic Acidosis). Causes can include severe hypoxia, massive tissue injury, or sometimes metabolic disorders (Type B Lactic Acidosis). The conversion factor relies on molecular weight 90.08 g/mol: 1 mmol/L ≈ 9.008 mg/dL.

Clinical References

How to Use This Calculator

Follow these steps to get accurate clinical conversions instantly.

Enter Values

Input your laboratory results into the corresponding unit field (e.g., mmol/L). You can use either dot or comma decimals.

Automatic Conversion

The calculator works in real-time. As you type in one field, all other units (like mg/dL) are instantly updated.

Verify Units

Check the SI Units section. mmol/L is the standard unit for lactate monitoring in critical care.

Reset

Use the Clear button to reset all fields before starting a new calculation.

? Frequently Asked Questions & Tips

Is mg/dL the same as mg%?

Yes. mg/dL (milligrams per deciliter) and mg% (milligrams per 100 milliliters) are numerically identical.

What is the relationship between Lactate and pH?

Lactic Acid is an acid; high levels consume bicarbonate (HCO₃^–), leading to a drop in blood pH (metabolic acidosis).

Disclaimer: This calculator is provided for educational and reference purposes only. It is not intended for clinical diagnosis, treatment, or medical decision-making. Always consult a qualified healthcare professional and refer to your laboratory’s official reference ranges before interpretation.

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