How do I convert Chloride (CSF) from mmol/L to mg/dL?

mg/dL = mmol/L × 3.545. In the other direction: mmol/L = mg/dL × 0.2821.

What is the reference range of Chloride (CSF)?

For adults the range is 115 – 130 mmol/L (MedlinePlus (NLM): CSF analysis). Reference ranges differ between laboratories and partly by sex and age; use the range printed on your lab report.

Which units are used for Chloride (CSF)?

Common units are mmol/L, g/dL, g/L, mg/dL, mg/L.

Urine & CSF

Chloride (CSF) unit converter

Chloride in cerebrospinal fluid

Also known as: CSF chloride, Liquorchlorid, Chlorid im Liquor, Chloride in cerebrospinal fluid

Converter

Enter a value in any unit and all other units fill in.

mmol/L = mEq/L g/dL g/L mg/dL mg/L

Worked example

122.5 mmol/L (middle of the reference range) = 0.434 g/dL

Conversion formulas

g/dL	g/dL = mmol/L × 0.003545	mmol/L = g/dL × 282.1
g/L	g/L = mmol/L × 0.03545	mmol/L = g/L × 28.21
mg/dL	mg/dL = mmol/L × 3.545	mmol/L = mg/dL × 0.2821
mg/L	mg/L = mmol/L × 35.45	mmol/L = mg/L × 0.02821

Good to know

Chloride in cerebrospinal fluid is reported in mmol/L or mEq/L, which are numerically identical.

1 mmol/L = 1 mEq/L; CSF chloride is higher than serum chloride.
CSF (cerebrospinal fluid) values are only meaningful together with a blood sample taken at the same time and the other CSF results.

Reference range

Unit	Adults
mmol/L = mEq/L	115 – 130
g/dL	0.4077 – 0.4609
g/L	4.077 – 4.609
mg/dL	407.7 – 460.9
mg/L	4077 – 4608

Source: MedlinePlus (NLM): CSF analysis · Last reviewed: 2026-10-19

Note from the source: 115-130 mEq/L (= mmol/L) (MedlinePlus). A 1972 study of 102 samples found 119-127 mmol/L (Pirke et al.)