🧫 Creatinine Converter (mg/dL ↔ µmol/L)
Serum creatinine in mg/dL × 88.42 gives µmol/L; µmol/L ÷ 88.42 gives mg/dL. This converts either direction exactly. Enter your values below, results update instantly, entirely on your device.
1 mg/dL × 88.42
How the creatinine converter (mg/dl ↔ µmol/l) works
µmol/L = mg/dL × 88.42, and mg/dL = µmol/L ÷ 88.42. The factor 88.42 comes from creatinine’s molar mass of 113.12 g/mol: 1 mg/dL is 10 mg/L, which is 10 ÷ 113.12 = 0.0884 mmol/L = 88.42 µmol/L. Reading a table is easy: since 1 mg/dL ≈ 88.4 µmol/L, a value near 1 mg/dL sits near 88 µmol/L, and each 0.1 mg/dL step is about 8.8 µmol/L.
Example: 1.0 mg/dL × 88.42 = 88 µmol/L, and a lab value of 80 µmol/L ÷ 88.42 = 0.90 mg/dL.
Serum creatinine is reported in mg/dL in the US and in µmol/L in the UK, Canada, Australia and most of Europe. The exact factor 88.42 is derived from creatinine’s molar mass, so no precision is lost. Note this converts the creatinine concentration only. It does not compute eGFR (kidney function), which additionally requires age and sex. This tool is a unit conversion, not medical advice or a kidney-function assessment; discuss results with your clinician.
Frequently asked questions
How do I convert creatinine from mg/dL to µmol/L?
Multiply by 88.42. For example, 1.2 mg/dL × 88.42 = 106 µmol/L. To convert back, divide the µmol/L value by 88.42.
Where does 88.42 come from?
From creatinine’s molar mass of 113.12 g/mol. One mg/dL equals 10 mg/L, and 10 ÷ 113.12 = 0.0884 mmol/L, which is 88.42 µmol/L, so 1 mg/dL = 88.42 µmol/L.
Does this calculate eGFR or kidney function?
No. This converts the creatinine number between units only. Estimated GFR (eGFR) needs more inputs such as age and sex and a specific equation (e.g. CKD-EPI); this tool deliberately does just the unit conversion.
Is 88.4 or 88.42 the right factor?
They are the same value rounded differently. The molar-mass-derived factor is 88.42, which this tool uses; many references round it to 88.4.
Is my data uploaded?
No, the conversion runs locally in your browser and nothing is transmitted.
How do I convert 1.5 mg/dL to µmol/L?
Multiply by 88.42: 1.5 × 88.42 = 133 µmol/L. Going the other way, 133 ÷ 88.42 returns 1.5 mg/dL.
Is µmol/L the same as mmol/L for creatinine?
No, creatinine is reported in micromoles per litre (µmol/L), one-thousandth of a millimole per litre. A value of 88 µmol/L is 0.088 mmol/L, so watch the prefix when reading lab reports.
Is this creatinine converter (mg/dl ↔ µmol/l) accurate and private?
Yes. It uses the standard published formula, shows its working under every result, and computes locally in your browser, your inputs are never sent to a server, and the page works offline.