What is the conversion factor for creatinine?

The factor is 88.42, derived from creatinine's molar mass of 113.12 g/mol. To convert mg/dL to µmol/L, multiply by 88.42. To convert µmol/L to mg/dL, divide by 88.42.

What is a normal serum creatinine?

Normal serum creatinine is roughly 0.7–1.3 mg/dL (62–115 µmol/L) for men and 0.6–1.1 mg/dL (53–97 µmol/L) for women, though ranges vary by lab, muscle mass, and assay method.

Why is creatinine measured?

Creatinine is a waste product cleared by the kidneys, so its blood level reflects kidney function. A rising creatinine signals reduced filtration and is used to estimate the glomerular filtration rate (eGFR).

Does this convert eGFR too?

No. This tool only converts the creatinine concentration itself. eGFR is calculated from creatinine plus age, sex, and other factors using equations such as CKD-EPI, which is a separate calculation.

Is my data stored anywhere?

No. The conversion runs entirely in your browser and the value you enter is never transmitted to or saved on any server.

Creatinine Unit Converter (mg/dL to umol/L)

The Creatinine Unit Converter switches a creatinine result between mg/dL (used in the US and a few other countries) and µmol/L (the SI unit used in the UK, Canada, Australia, and most of Europe). Creatinine is a muscle-derived waste product cleared by the kidneys, so it is central to assessing renal function.

How it works

Creatinine has a molar mass of 113.12 g/mol. Converting between the mass unit (mg/dL) and the molar unit (µmol/L) uses a single constant:

µmol/L = mg/dL × 88.42

mg/dL = µmol/L ÷ 88.42

The factor 88.42 accounts for the molar mass and the per-decilitre to per-litre scaling. For example, a serum creatinine of 1.0 mg/dL equals 1.0 × 88.42 ≈ 88 µmol/L.

Reference values and notes

Typical normal serum creatinine is about 0.7–1.3 mg/dL (62–115 µmol/L) for men and 0.6–1.1 mg/dL (53–97 µmol/L) for women. Levels depend strongly on muscle mass, so a muscular athlete and a frail elderly patient with the same kidney function can show very different values.

This tool converts the concentration only. Estimated GFR (eGFR), the more clinically meaningful measure of kidney function, is computed from creatinine together with age and sex using equations such as CKD-EPI and is not the same as a unit conversion. Always interpret values against your own laboratory’s reference range.