1. About Creatinine Unit Conversion

Creatinine measurements are reported in different units worldwide - μmol/L (micromoles per liter) is common in many countries, while mg/dL (milligrams per deciliter) is standard in the United States. This calculator provides quick conversion between these units.

2. Conversion Formula

The calculator uses the following conversion formula:

Where:

• 1 mg/dL of creatinine = 88.4 μmol/L
• The conversion factor 88.4 comes from the molecular weight of creatinine (113.12 g/mol)

3. Why Convert Between Units?

Clinical Importance: Many medical guidelines and equations (like CKD-EPI) require creatinine values in specific units. Accurate conversion ensures proper interpretation of lab results and correct calculations.

4. Using the Calculator

Instructions: Simply enter the creatinine value in μmol/L and the calculator will automatically convert it to mg/dL. The result is rounded to 2 decimal places for clinical practicality.

5. Frequently Asked Questions (FAQ)

Q1: Why is the conversion factor 88.4?
A: It's derived from the molecular weight of creatinine (113.12 g/mol) and unit conversion factors between mg/dL and μmol/L.

Q2: Is the conversion different for other substances?
A: Yes, each substance has its own conversion factor based on its molecular weight. Never use this factor for non-creatinine conversions.

Q3: How precise is this conversion?
A: The conversion is mathematically exact, though clinical measurements may have analytical variability.

Q4: Should I convert before or after using GFR equations?
A: Always check which units your equation requires. CKD-EPI requires mg/dL, while some European equations use μmol/L.

Q5: What's the reverse conversion (mg/dL to μmol/L)?
A: Multiply mg/dL by 88.4 to get μmol/L. Some calculators offer bidirectional conversion.