umol/L to mg/dL Calculator
Your report shows µmol/L, but a book or doctor quotes mg/dL. The factor changes with the substance, so pick yours.
Quick answer: Multiply the µmol/L by the molar mass, then divide by 10,000. For example, 100 µmol/L of Creatinine is 1.131 mg/dL, 100 µmol/L of Glucose is 1.802 mg/dL and 100 µmol/L of Cholesterol is 3.867 mg/dL.
The µmol/L to mg/dL formula
Molar concentration becomes mass concentration when you multiply by the molar mass (Wikipedia: Molar concentration).
Then change µg per liter into mg per deciliter, which means dividing by 10,000.
Take 100 µmol/L of Creatinine. 100 × 113.12 ÷ 10,000 gives 1.131 mg/dL.
Take 100 µmol/L of Glucose. 100 × 180.16 ÷ 10,000 gives 1.802 mg/dL.
µmol/L to mg/dL by substance
Value in µmol/L.
Substance. It sets the molar mass.
mg/dL is the result. The last column gives the factor for 1 µmol/L.
How to convert µmol/L to mg/dL step by step
- Enter the value in µmol/L.
- Pick the substance, or enter its molar mass.
- Read the result in mg/dL.
- Check it against the quick table.
Example 1: 100 µmol/L of Creatinine
- Start with 100 µmol/L of Creatinine.
- 100 × 113.12 ÷ 10,000 = 1.131.
- The concentration is 1.131 mg/dL.
100 µmol/L of Creatinine = 1.131 mg/dL
Example 2: 100 µmol/L of Glucose
- Start with 100 µmol/L of Glucose.
- 100 × 180.16 ÷ 10,000 = 1.802.
- The concentration is 1.802 mg/dL.
100 µmol/L of Glucose = 1.802 mg/dL
Example 3: 100 µmol/L of Cholesterol
- Start with 100 µmol/L of Cholesterol.
- 100 × 386.65 ÷ 10,000 = 3.867.
- The concentration is 3.867 mg/dL.
100 µmol/L of Cholesterol = 3.867 mg/dL
For creatinine, 88.4 µmol/L equals 1 mg/dL (Wikipedia: Creatinine). This page checks maths only. It is not medical advice, so ask your lab or clinician about any result or dose.
µmol/L to mg/dL conversion table
| Value and substance | mg/dL | Per 1 µmol/L |
|---|---|---|
| 100 µmol/L of Creatinine | 1.131 mg/dL | 0.0113 mg/dL |
| 50 µmol/L of Glucose | 0.9008 mg/dL | 0.018 mg/dL |
| 10 µmol/L of Cholesterol | 0.3867 mg/dL | 0.0387 mg/dL |
| 200 µmol/L of Triglycerides | 17.709 mg/dL | 0.0885 mg/dL |
| 5 µmol/L of Urea | 0.03 mg/dL | 0.006006 mg/dL |
| 1 µmol/L of Uric acid | 0.0168 mg/dL | 0.0168 mg/dL |
| 100 µmol/L of Bilirubin | 5.847 mg/dL | 0.0585 mg/dL |
| 50 µmol/L of Calcium | 0.2004 mg/dL | 0.004008 mg/dL |
The highlighted row is the default of the calculator. The last column gives mg/dL per 1 µmol/L.
A quick mental shortcut for µmol/L to mg/dL
Divide the molar mass by 10,000 to get the factor for one µmol/L.
For creatinine the factor is about 0.0113.
What µmol/L measures
µmol/L means millionths of a mole in one liter of fluid. It counts particles, not weight (Wikipedia: Molar concentration).
Many labs outside the US use it.
What mg/dL measures
mg/dL means milligrams of a substance in one deciliter of fluid. A deciliter is one tenth of a liter.
US lab reports use it for glucose, creatinine and cholesterol.
Why the substance matters
A mole is a count of particles, and heavier particles weigh more for the same count (Wikipedia: Molar mass).
So the same µmol/L gives a different mg/dL for each substance.
Example: Creatinine
For Creatinine, the molar mass used is 113.12 g per mol.
So 100 µmol/L is 1.1312 mg/dL.
Example: Glucose
For Glucose, the molar mass used is 180.16 g per mol.
So 100 µmol/L is 1.8016 mg/dL.
Example: Cholesterol
For Cholesterol, the molar mass used is 386.65 g per mol.
So 100 µmol/L is 3.8665 mg/dL.
Your own substance
If your substance is not in the list, enter its own molar mass.
Find it on the product label or in a trusted reference table.
Going the other way
To go back, multiply the mg/dL by 10,000 and divide by the molar mass.
For Creatinine, 1.1312 mg/dL goes back to 100 µmol/L.
Check your answer
Reverse the answer with the back formula.
For Creatinine, 1.1312 mg/dL should return 100 µmol/L.
More worked values
88.4 µmol/L of creatinine, with a molar mass of 113.12 g/mol, is 1 mg/dL. 150 µmol/L of creatinine is 1.7 mg/dL.
5,000 µmol/L of glucose, with a molar mass of 180.16 g/mol, is 90.1 mg/dL.
Checking in reverse
Multiply the mg/dL by 10,000 and divide by the molar mass. 1.7 mg/dL of creatinine gives back 150 µmol/L.
Using a report
Labs in different countries may give the same result in either unit. Convert with the molar mass of your own substance before you compare.
Quick conversion answers
| Conversion | Result |
|---|---|
| 10 µmol/L of Glucose | 0.1802 mg/dL |
| 200 µmol/L of Cholesterol | 7.733 mg/dL |
| 5 µmol/L of Triglycerides | 0.4427 mg/dL |
| 1 µmol/L of Urea | 0.006006 mg/dL |
| 100 µmol/L of Uric acid | 1.681 mg/dL |
| 50 µmol/L of Bilirubin | 2.923 mg/dL |
Where this conversion is used
Many labs report creatinine and similar tests in µmol/L.
US lab reports list blood values in mg/dL.
Common mistakes to avoid
- Using the wrong substance. Each substance has its own molar mass.
- Mixing up the direction. Here 10 µmol/L of Glucose is 0.1802 mg/dL, so a correct answer comes out smaller than the number you start with.
- Mixing dL, L and mL. A liter is 10 deciliters and 1,000 mL.
- Rounding too early. The answer for 100 µmol/L of Uric acid is 1.681 mg/dL. Cut it to 1.7 mg/dL and you are off by about 1.1 percent, and the gap grows if you reuse it.
Related converters
Example: Triglycerides
For Triglycerides, the molar mass used is 885.43 g per mol.
So 50 µmol/L is 4.4272 mg/dL.
Example: Urea
For Urea, the molar mass used is 60.06 g per mol.
So 10 µmol/L is 0.06006 mg/dL.
Frequently asked questions
How do I convert µmol/L to mg/dL?
mg/dL = µmol/L × molar mass ÷ 10,000.
Why does it depend on the substance?
Each substance has its own molar mass, so the factor changes.
How many mg/dL is 100 µmol/L of Creatinine?
1.1312 mg/dL.
How many mg/dL is 100 µmol/L of Glucose?
1.8016 mg/dL.
What if my substance is not listed?
Pick the custom option and enter its molar mass.
Is this medical advice?
No. It checks the maths only. Ask your lab or clinician about your result.
Sources
- Wikipedia: Molar concentration (en.wikipedia.org)
- Wikipedia: Molar mass (en.wikipedia.org)
- Wikipedia: Creatinine (en.wikipedia.org)
