# mmol/L to mg/dL Converter (Lab Values)

URL: https://speedycalculator.com/calculators/health/mmol-l-to-mg-dl/
Last updated: 2026-10-30

> The mmol/L to mg/dL converter switches common blood test results – glucose, cholesterol, triglycerides, urea, calcium, magnesium, phosphate, uric acid, creatinine, bilirubin, iron and lactate – between SI (mmol/L or µmol/L) and conventional US units.

## Inputs

- Test
- Value in SI units

## Results

- Value in mg/dL

## Formula

```
mg/dL = mmol/L × factor (factor = molar mass ÷ 10)
Creatinine and bilirubin: mg/dL = µmol/L × factor
```

## Explanation

US labs report most results in mg/dL, while most other countries use SI units. The conversion factor depends on the molar mass of each substance, so there is no single factor for all tests.

### How to use the mmol/L to mg/dL Converter

- **Test**
- **Value in SI units**
- Every result field is editable: type into **Value in mg/dL** and **Value in SI units** plus every other field update to match.

Results update as you type, and every field accepts the units shown in its menu.

### How it works

Choose the test and enter the value in SI units; type into the result to convert from mg/dL.

### Conversion factors (SI → mg/dL)

TestMultiply SI value byGlucose18.016Cholesterol (total, LDL, HDL)38.67Triglycerides88.57Urea nitrogen (BUN, from urea mmol/L)2.801Calcium4.008Magnesium2.431Phosphate3.097Uric acid16.81Creatinine (µmol/L)0.01131Bilirubin (µmol/L)0.05848Iron (µmol/L)5.585Lactate9.008

### Inputs explained

FieldWhat to enterTestChoose one: Glucose, Cholesterol (total, LDL, HDL), Triglycerides, Urea nitrogen (BUN, from urea mmol/L) …Value in SI unitsA number
*Health note: this calculator is for education and screening only and is not a diagnosis or treatment advice. Discuss your results with a qualified clinician.*

## Worked example

Inputs — Test: Glucose; Value in SI units: 5.5.

Results — **Value in mg/dL = 99.09 mg/dL**.

## Key terms

- **SI units**: International System of Units, e.g. mmol/L.

## FAQ

**Why do conversion factors differ?**
Each substance has a different molar mass.

**What is 5.5 mmol/L glucose in mg/dL?**
About 99 mg/dL.

**What is 88 µmol/L creatinine in mg/dL?**
About 1.0 mg/dL.


## Sources

- [AMA Manual of Style – SI conversion calculator](https://www.amamanualofstyle.com/page/si-conversion-calculator)