Medical Lab Unit Converter
Convert 30 lab tests between conventional and SI units.
Enter your values to see the result.
Conversion factors follow the SI unit tables used by major journals (AMA Manual of Style). Reference ranges vary between laboratories, so compare results with your own lab's ranges.
Processing and privacy
Processing varies by tool. Check the instructions for local processing, server requests, external services and any file or request limits before entering sensitive information.
Read the privacy policyHow this calculation works
Understand the method, inputs and limits behind your result.
- Formula
- SI result = conventional value × analyte-specific conversion factor. Reverse conversion divides by that factor. Factors and reporting units vary by analyte; mass and molar concentrations are not interchangeable without the correct factor.
- Variables
- Test: Glucose, Total cholesterol, LDL cholesterol, HDL cholesterol, Non-HDL cholesterol, Triglycerides, Creatinine, Urea nitrogen (BUN), Uric acid, Hemoglobin, Albumin, Total protein, Bilirubin, Calcium, Magnesium, Phosphate, Iron, Ferritin, Vitamin D (25-hydroxy), Vitamin B12, Folate, Free T4, Free T3, Cortisol, Testosterone, Estradiol, Insulin, Lactate, Ammonia, C-reactive protein
- Convert: Conventional → SI, SI → Conventional
- Value
- Units
- Use the units shown beside each input. Counts and ratios are dimensionless unless labeled otherwise.
- Example
- Glucose 100 mg/dL is 5.55 mmol/L, and vitamin D 30 ng/mL is 74.9 nmol/L.
- Assumptions
- Conversion factors follow the SI unit tables used by major journals (AMA Manual of Style). Reference ranges vary between laboratories, so compare results with your own lab's ranges.
- Source
- ToolzHive calculation guide and calculator implementation. External reference verification is pending.
- Last reviewed
- Review date not yet recorded.
Methodology & References
The method depends on the selected model and input options. Review the assumptions and references above before interpreting the result.
- Choose the lab test.
- Choose the direction: conventional to SI, or SI to conventional.
- Enter the value and read the result, the factor and the typical range.
Interpretation and limitations
- Why do countries use different units? The US mostly uses mass units (mg/dL), while most other countries use SI molar units (mmol/L), which count molecules.
- Why do reference ranges differ between labs? Ranges depend on the analyzer, method and population. Always compare your result with the range printed on your own lab report.
References
External reference verification is pending. The formula and examples describe the current ToolzHive implementation.
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Clear instructions
Find steps, examples and limitations below.
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Free to use
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How to use the Medical Lab Unit Converter
Convert 30 lab tests between conventional and SI units.
- 1 Choose the lab test.
- 2 Choose the direction: conventional to SI, or SI to conventional.
- 3 Enter the value and read the result, the factor and the typical range.
Example and practical tips
Glucose 100 mg/dL is 5.55 mmol/L, and vitamin D 30 ng/mL is 74.9 nmol/L.
Frequently asked questions
Why do countries use different units?
The US mostly uses mass units (mg/dL), while most other countries use SI molar units (mmol/L), which count molecules.
Why do reference ranges differ between labs?
Ranges depend on the analyzer, method and population. Always compare your result with the range printed on your own lab report.
Practical guides
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How to Use Medical Lab Unit Converter
Convert 30 lab tests between conventional (US) and SI units: glucose, cholesterol, creatinine, urea, hemoglobin, vitamin D, B12, hormones and more.
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