How to Convert mg/dL to µmol/L
mg/dL is a mass concentration unit. µmol/L is a molar concentration unit. To convert between them, you need the molecular weight of the molecule being measured.
µmol/L = (mg/dL x 10000) / molecular weight mg/dL = (µmol/L x molecular weight) / 10000 This page is useful when a US-style lab report uses mg/dL but a guideline, study, or international reference range uses µmol/L.
How to Use This Calculator
Select the molecule first, then enter the value from your lab report. The result updates instantly and the formula strip shows the active conversion factor. Use the swap button if you need the reverse µmol/L to mg/dL conversion.
If you only need creatinine or bilirubin, you can also use the dedicated creatinine mg/dL to µmol/L calculator or bilirubin mg/dL to µmol/L calculator.
Supported Molecules and Conversion Factors
The conversion factor changes by molecule. The table below shows the molecular weights and what 1 mg/dL equals in µmol/L.
| Molecule | Molecular weight | 1 mg/dL equals | Common use |
|---|---|---|---|
| Creatinine | 113.12 g/mol | 88.40 µmol/L | Kidney function evaluation |
| Bilirubin | 584.66 g/mol | 17.10 µmol/L | Liver function and jaundice evaluation |
| Uric Acid | 168.11 g/mol | 59.48 µmol/L | Gout and kidney stone evaluation |
| Urea | 60.06 g/mol | 166.50 µmol/L | Kidney function and nitrogen balance |
| Calcium | 40.08 g/mol | 249.50 µmol/L | Bone health and metabolic assessment |
| Magnesium | 24.31 g/mol | 411.35 µmol/L | Electrolyte balance assessment |
| Phosphate | 94.97 g/mol | 105.30 µmol/L | Kidney, bone, and metabolic assessment |
| Iron | 55.85 g/mol | 179.05 µmol/L | Iron status and anemia evaluation |
| Copper | 63.55 g/mol | 157.36 µmol/L | Trace mineral assessment |
| Zinc | 65.38 g/mol | 152.95 µmol/L | Trace mineral assessment |
| Vitamin C (Ascorbic Acid) | 176.12 g/mol | 56.78 µmol/L | Vitamin status assessment |
| Lactate | 90.08 g/mol | 111.01 µmol/L | Tissue oxygenation and metabolic assessment |
Common mg/dL to µmol/L Examples
These examples show why molecule selection matters. The same mg/dL value can represent a different µmol/L value depending on molecular weight.
| Molecule | mg/dL | µmol/L | Context |
|---|---|---|---|
| Creatinine | 1.0 mg/dL | 88.40 µmol/L | Kidney function example |
| Bilirubin | 1.0 mg/dL | 17.10 µmol/L | Liver panel example |
| Uric Acid | 6.0 mg/dL | 356.91 µmol/L | Gout risk example |
| Calcium | 9.5 mg/dL | 2370.26 µmol/L | Serum calcium example |
| Magnesium | 2.0 mg/dL | 822.71 µmol/L | Electrolyte example |
| Lactate | 18.0 mg/dL | 1998.22 µmol/L | Critical care example |
Creatinine mg/dL to µmol/L
Creatinine is the most common mg/dL to µmol/L conversion. A practical shortcut is to multiply creatinine in mg/dL by 88.4. For example, 1.0 mg/dL creatinine equals 88.4 µmol/L.
Bilirubin mg/dL to µmol/L
Bilirubin uses a different factor. Multiply bilirubin in mg/dL by about 17.1 to estimate µmol/L. For example, 1.0 mg/dL bilirubin equals about 17.1 µmol/L.
Frequently Asked Questions
Is mg/dL to µmol/L the same for every lab value?
No. The formula uses molecular weight, so creatinine, bilirubin, uric acid, calcium, and lactate all convert differently.
How do you convert creatinine mg/dL to µmol/L?
Multiply creatinine in mg/dL by 88.4. For example, 1.2 mg/dL is about 106.08 µmol/L.
How do you convert bilirubin mg/dL to µmol/L?
Multiply bilirubin in mg/dL by about 17.1. For example, 2.0 mg/dL is about 34.2 µmol/L.
Can I use this calculator for mmol/L?
No. mmol/L is 1000 times larger than µmol/L. For mmol/L conversions, use the mg/dL to mmol/L conversion calculator.
Does this calculator interpret my lab result?
No. It only converts units. Lab interpretation depends on the test, reference range, age, sex, medications, symptoms, and clinical context.
Conclusion
The mg/dL to µmol/L conversion depends on molecular weight. This calculator handles the formula for common clinical lab molecules and shows the conversion factor so you can verify the result.
Use it when comparing lab reports across countries, reviewing medical literature, or checking reference ranges in a different unit system.