Blood Glucose Converter
Medical blood glucose unit converter supporting mg/dL, mmol/L, mg/L, and g/L
Blood Glucose Input
Choose the unit used by your meter or lab report
Unit Categories
Quick Set
Conversion Results
(3 units)How to Use the Blood Glucose Converter
Convert glucose readings in seconds with these simple steps
Enter Glucose Value
Input the number from your glucometer or lab report.
Select Source Unit
Choose mg/dL, mmol/L, mg/L, or g/L as your starting unit.
Review All Results
See instant conversions across all supported blood glucose units.
Copy for Records
Copy any result for doctor visits, logs, or app entries.
Common Reference Ranges
Typical adult reference values used in many guidelines (for quick orientation only)
Fasting Plasma Glucose
Common non-diabetic reference: about 70-99 mg/dL (3.9-5.5 mmol/L).
2-Hour Post-Meal
Many targets keep post-meal values below 180 mg/dL (10.0 mmol/L).
Diagnostic Threshold
A fasting value at or above 126 mg/dL (7.0 mmol/L) is a common diagnostic threshold.
Important Medical Note
This tool only performs unit conversion and does not provide diagnosis. Always follow guidance from your healthcare professional.
Medical-Friendly Unit Conversion
Built for diabetes tracking, cross-country lab interpretation, and clinical communication.
Instant Results
Get all unit conversions immediately as you type.
Clinical Precision
Uses standard glucose conversion factors for reliable unit mapping.
Multiple Unit Support
Supports both core clinical units and mass concentration units.
Perfect For
Daily glucose monitoring and personal logs
Doctor visits and international clinical reports
Diabetes education and caregiver communication
Frequently Asked Questions
What is the formula between mg/dL and mmol/L?
For glucose, mmol/L = mg/dL ÷ 18.0182 and mg/dL = mmol/L × 18.0182. Clinical practice often rounds this factor to 18.
Why do some countries use mmol/L while others use mg/dL?
Different regions adopted different lab standards. The US commonly uses mg/dL, while many countries in Europe and Asia commonly use mmol/L.
Can I use this for CGM and fingerstick values?
Yes. The conversion is unit-based only, so it can be used for both CGM data and fingerstick meter readings.
Does this tool diagnose diabetes?
No. It only converts units. Diagnosis must be made by a qualified healthcare professional using proper clinical criteria.
How do mg/L and g/L relate to mg/dL?
1 mg/dL equals 10 mg/L and 0.01 g/L. These are direct concentration unit relationships.