Laboratory unit tool
Creatinine Unit Converter: mg/dL and µmol/L
Convert a serum creatinine value with the standard molar-mass factor before using an equation that expects a specific unit.
Converted value
0.0 µmol/L
Conversion uses 1 mg/dL = 88.4 µmol/L. Always check the unit printed on your laboratory report before calculating eGFR.
How this tool works
Creatinine is commonly reported in mg/dL in the United States and in µmol/L in many other countries. This converter uses 1 mg/dL = 88.4 µmol/L. To convert mg/dL to µmol/L it multiplies by 88.4; in the other direction it divides by 88.4.
Unit conversion changes the notation, not the biological result. A value of 1.2 mg/dL and about 106.1 µmol/L represent the same creatinine concentration. The extra decimal shown by a converter does not make the original laboratory measurement more precise.
How to use it
- Copy the serum creatinine number and unit exactly as printed on the laboratory report.
- Choose that input unit and enter the number without commas or other text.
- Use the converted value only when another calculator or document explicitly requires the other unit.
How to interpret the result
Check the magnitude before continuing: values in µmol/L are roughly 88 times the equivalent values in mg/dL. Accidentally entering 106 as mg/dL instead of µmol/L will produce a meaningless eGFR result.
Whenever possible, use a calculator that accepts the laboratory's original unit. That avoids a transcription step and preserves the original measurement for comparison with the report.
Limitations and safety
- This is a unit conversion, not an eGFR calculation or interpretation of whether creatinine is normal.
- Do not use a rounded converted value to replace the original laboratory result in a medical record.
- Laboratory reference ranges vary with assay, age, sex, body composition, and clinical setting.
Sources and method
Formula and interpretation checked against the following primary or authoritative sources. Editorial review date: September 9, 2026.