Blood Glucose Converter: mg/dL to mmol/L Fast Tool
Convert blood sugar readings between mg/dL and mmol/L instantly using the IFCC standard conversion factor (18.0182).
Convert Glucose Units
Enter a glucose value below to convert between mg/dL and mmol/L instantly.
mg/dL
Reference Only
This converter provides educational unit conversion using the IFCC-recommended factor of 18.0182. It does not interpret glucose results, evaluate clinical significance, or recommend treatment. Always consult your healthcare provider for interpretation of your glucose values.
Common Reference Values
The following values are pre-converted examples provided for reference purposes only. They are not intended as targets, diagnostic thresholds, or clinical recommendations.
| mg/dL | mmol/L |
|---|---|
| 70.0 | 3.88 |
| 100.0 | 5.55 |
| 120.0 | 6.66 |
| 140.0 | 7.77 |
| 180.0 | 9.99 |
| 200.0 | 11.10 |
Quick Summary
Bidirectional blood glucose converter designed for diabetics, clinicians, and researchers. Real-time conversion as you type with instant copy, quick reference target tables, and IFCC molecular weight fidelity.
How It Works
- Select your input unit — Choose mg/dL (US standard) or mmol/L (international standard) using the radio buttons. The input unit determines whether you enter a value in mg/dL or mmol/L.
- Enter a glucose value — Type a numeric glucose value (greater than 0) into the input field. The conversion happens instantly as you type — there is no Calculate button.
- Read the converted result — The converter displays the equivalent value in the opposite unit. mmol/L results are shown rounded to 2 decimal places; mg/dL results are shown rounded to 1 decimal place.
- Swap units (optional) — Click the Swap button to exchange the input and output units. The entered value is automatically converted to the new input unit.
- Copy or reset (optional) — Click Copy to copy the conversion result to your clipboard. Click Clear to reset the form and start over.
- View common reference values — The Common Reference Values table shows pre-converted examples of commonly discussed glucose values for reference purposes.
Formula Used
The conversion factor 18.0182 is recommended by the International Federation of Clinical Chemistry (IFCC) for converting between glucose concentration units. The factor is derived from the molecular weight of glucose (180.156 g/mol).
Note: Some sources use a rounded factor of 18.0 for quick mental conversion. This converter uses the more precise IFCC factor of 18.0182 for informational reference.
Evidence
Blood glucose unit conversion is based on established laboratory medicine standards:
- The International Federation of Clinical Chemistry and Laboratory Medicine (IFCC) recommends reporting glucose in SI units (mmol/L). The conversion factor 18.0182 is derived from the molecular weight of glucose and is used in published clinical conversion tables. The National Library of Medicine (NIH/NCBI) references the conversion formulas: mg/dL × 0.0555 = mmol/L and mmol/L × 18.018 = mg/dL.
- The American Diabetes Association (ADA) publishes its Standards of Care in Diabetes using both mg/dL and mmol/L units, and the organization's educational materials reference the standard conversion between these units.
- The National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) provides blood glucose testing and diagnosis information, with reference ranges and target values reported in mg/dL along with SI unit (mmol/L) equivalents for informational purposes.
- The Centers for Disease Control and Prevention (CDC) provides diabetes testing guidance that includes both measurement units.
- The National Library of Medicine (MedlinePlus) provides peer-reviewed educational content on blood glucose testing that references both units and their relationship.
This converter applies the IFCC-recommended conversion factor to the value you enter. It does not interpret glucose results, evaluate clinical significance, or recommend treatment.
How to Interpret Your Results
The converter displays the mathematical equivalent of your entered glucose value in the opposite unit. For example:
- 120 mg/dL converts to approximately 6.66 mmol/L (120 ÷ 18.0182 = 6.66).
- 6.7 mmol/L converts to approximately 120.7 mg/dL (6.7 × 18.0182 = 120.7).
The conversion is a pure mathematical transformation using the IFCC-recommended factor. The result is the exact equivalent value in the target unit, based on the internationally accepted conversion standard.
Important: This converter provides educational unit conversion only. It does not evaluate whether your glucose value is within any particular range, does not diagnose or monitor any medical condition, and does not recommend any action based on the converted value. Glucose targets are individualized and should be discussed with your healthcare provider.
Medical Disclaimer
The information provided by Qurekit's calculators is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition or treatment. Never disregard professional medical advice or delay in seeking it because of something you have read on this website.
Frequently Asked Questions
Related Tools
Version History
Every version is logged with its build date, changes, and evidence sources so you can verify the methodology.
Version v1.0.0
Initial Implementation
Initial implementation of the Glucose Unit Converter. Provides instant bidirectional conversion between mg/dL and mmol/L using the IFCC-recommended conversion factor (18.0182). Supports swapping input and output units, copying conversion results, resetting the form, and a common reference values table for educational reference. Built for educational reference only.
Changes
- Initial converter implementation
- Instant bidirectional conversion (mg/dL ↔ mmol/L) with IFCC factor 18.0182
- Input type="text" with inputmode="decimal" to prevent browser-native validation (R10 compliance)
- Swap button to exchange input value and units
- Copy result to clipboard with fallback for older browsers
- Clear/Reset button to reset the form
- Common reference values table with 6 pre-converted examples (purely educational)
- Validation: zero not allowed, negatives rejected, values >1000 flagged as extreme
- Internal full precision with user-friendly display rounding (mmol/L to 2 decimals, mg/dL to 1 decimal)
- Converters category added to tools registry
- Medical references section with authoritative sources (ADA, NIDDK, CDC, MedlinePlus)
- FAQ section with 5 educational questions
- Structured data (WebApplication, MedicalWebPage, FAQPage)
- BreadcrumbList JSON-LD for SEO
- Accessibility: keyboard navigation, aria-live, focus management
- Mobile-responsive layout
- Related tools carousel with cross-linking to diabetes and medical tools
Evidence Sources
- American Diabetes Association (ADA)
- National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK): Diabetes Tests & Diagnosis
- Centers for Disease Control and Prevention (CDC)
- MedlinePlus / National Library of Medicine (NIH)
- NIH / National Library of Medicine (NCBI Bookshelf)