Creatinine umol/L To mg/dL Converter

Convert creatinine results between umol/L and mg/dL, copy the formula, and convert a reference range without turning the number into a diagnosis.

Creatinine Result

Value
Report details
Optional reference range

Converted Result

Creatinine in mg/dLEnter a creatinine result to convert.

This converter changes units only. Kidney function assessment may need eGFR, urine albumin, age, sex, medicines, symptoms and clinical review.

What This Converter Does

Creatinine is often reported in umol/L in the UK and mg/dL in the United States. The same blood result can look unfamiliar when it appears in another unit. This page converts between the two formats using the standard creatinine factor. It also converts optional reference range limits, which can be useful when copying a report into a letter or comparing papers written in different unit systems.

The page does not estimate eGFR and does not judge kidney function. Creatinine is only one part of kidney assessment. eGFR formulas use creatinine with demographic and clinical information, and many reports already include eGFR. Urine albumin, repeat testing and medical history may also matter.

Formula And Factor

mg/dL = umol/L / 88.4umol/L = mg/dL x 88.4The factor is based on creatinine molecular mass and the relation between litres and decilitres.Small differences in the last decimal usually come from rounding.

Some tables use 88.42 or 88.4. This calculator uses 88.4, which is common in laboratory conversion tables. Use the decimal-place setting to match the report style you need.

Quick Conversion Table

umol/Lmg/dLUnit note
440.50Same concentration in another unit.
620.70Use the laboratory range.
88.41.00Useful anchor value.
1001.13Rounded to two decimals.
1201.36Not an eGFR calculation.
1501.70Clinical meaning depends on context.
2002.26Discuss report interpretation with a clinician.

Worked Examples

UK To US Unit

A creatinine result of 88.4 umol/L converts to 1.00 mg/dL. The value is the same result, not a second blood test.

US To UK Unit

A result of 1.2 mg/dL converts to 106.08 umol/L. A report may round this to 106 umol/L.

Range Conversion

If a range is 60 to 110 umol/L, the converted range is 0.68 to 1.24 mg/dL using the same factor.

How To Share A Converted Result

When sending results to a clinician, include the original value and unit as well as the converted value. Add the date, laboratory name, sample type, reference range and whether the report included eGFR. If the report is part of monitoring for medicines, diabetes, blood pressure, kidney disease or dehydration, do not reduce the discussion to the converted creatinine number alone.

Creatinine can change with muscle mass, diet, hydration, recent exercise, some medicines and acute illness. A converter cannot tell whether a change is clinically important. Repeated results and the full medical context matter.

Common Errors To Avoid

  • Copying the number without the unit.
  • Using mg/L instead of mg/dL by mistake.
  • Using this page as an eGFR calculator.
  • Comparing urine creatinine and blood creatinine directly.
  • Using another laboratory’s range when your report provides its own.

The mg/dL unit is easy to misread because it is not the same as mg/L. A value copied as mg/L can be ten times different from the intended unit. If you are entering results into a spreadsheet, place the unit in the column header and keep the original report PDF or screenshot available for checking.

Why eGFR Is Separate

eGFR is not a unit conversion. It is an estimate of kidney filtration calculated from creatinine plus other information. Many laboratories provide eGFR automatically when creatinine is measured in blood, but the equation and reporting rules can vary by laboratory and country. A person with the same creatinine value can have a different eGFR because age, sex and other factors affect the formula.

For that reason, this page does not ask for age or sex and does not produce an eGFR number. If you need eGFR, use the value printed on your report or a calculator recommended by a clinician or laboratory, and keep it separate from this unit conversion.

Before Comparing Two Results

Convert both results into the same unit, then check whether they came from the same laboratory and sample type. A small change may reflect hydration, muscle activity, diet or measurement variation. A larger change may need prompt medical review depending on symptoms and background conditions. The converter can format the numbers, but it cannot say why they changed.

FAQs

How do I convert creatinine umol/L to mg/dL?

Divide umol/L by 88.4. For example, 88.4 umol/L is 1.00 mg/dL.

How do I convert mg/dL to umol/L?

Multiply mg/dL by 88.4. For example, 1.2 mg/dL is 106.08 umol/L.

Is this an eGFR calculator?

No. It converts creatinine units only and does not calculate kidney filtration.

Can I use this for urine creatinine?

Be careful. Urine reports may use different units and collection formats. Follow the units printed on the report.

Why do results round differently?

Laboratories and papers may round to whole umol/L or one or two mg/dL decimals. Rounding can explain small differences.

Sources

  1. Lab Tests Online UK. (2026). Creatinine test. The Association for Laboratory Medicine. https://labtestsonline.org.uk/tests/creatinine-test
  2. National Health Service. (2026). Chronic kidney disease: diagnosis. NHS. https://www.nhs.uk/conditions/kidney-disease/diagnosis/
  3. National Center for Biotechnology Information. (2026). PubChem Compound Summary for Creatinine. PubChem. https://pubchem.ncbi.nlm.nih.gov/compound/Creatinine
  4. Unified Code for Units of Measure. (2024). UCUM specification. Regenstrief Institute. https://ucum.org/ucum
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