Estimated Average Glucose (eAG) Calculator
Metabolic Relevance
Your HbA1c reflects average blood glucose over 2-3 months (the lifespan of red blood cells). The eAG conversion, developed from the ADAG Study (507 participants), translates this percentage into familiar glucose units — bridging lab values with daily monitoring.
Recommended testing frequency:
Every 3 months for diabetes management, 6-12 months for prevention monitoring
Did you know?
Unlike a single fasting glucose reading, eAG represents the average of ALL glucose levels — post-meal spikes, overnight dips, and daily variations — giving a complete picture of glucose control.
The formula is: eAG (mg/dL) = 28.7 × HbA1c − 46.7. An A1c of 7% corresponds to an average glucose of ~154 mg/dL.
Want to understand your result better?
Learn about interpretation, what affects your score, and evidence-based strategies to improve it.
Read the full guideEvidence-Based
This calculator is based on peer-reviewed research validated across thousands of clinical studies.
View scientific references(4)Medical Disclaimer
Why Optimal Thresholds Differ?
Standard Medical
⚠️ Population-level diabetes diagnosis threshold
Research Consensus
✓ Optimal for minimizing metabolic risk
Metabolic Optimization
🔬 Excellent glucose stability with carbohydrate restriction
