Blood Glucose Calculator
Convert glucose units, estimate HbA1c, and interpret your blood sugar levels. Understand where you stand — normal, prediabetes, or diabetes range — and track your management.
Step 1: Glucose Reading
Normal ranges (fasting)
mg/dL: 70–99 normal, 100–125 prediabetes, ≥126 diabetes (fasting).
mmol/L: 3.9–5.5 normal, 5.6–6.9 prediabetes, ≥7.0 diabetes.
Step 2: Additional Context
Estimated A1c
Average glucose (mg/dL) = 28.7 × A1c – 46.7. Reverse: A1c ≈ (glucose + 46.7) / 28.7 (for average). We’ll estimate based on your current reading (as if average).
Glucose Interpretation
Summary
Glucose Gauge
Conversion & A1c
Interpretation
Normal
120 mg/dL (fasting)
Converted (mmol/L)
6.7
Converted (mg/dL)
120
Estimated HbA1c
5.8%
Risk category
Low
Glucose Gauge
Your level
120 mg/dL
Range
Normal
Recommended
70–140 mg/dL
Status
Within target
Unit Conversion & A1c Estimates
| Glucose (mg/dL) | Glucose (mmol/L) | Estimated A1c (%) | Category |
|---|
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