HbA1c ↔ average glucose

Convert glycated hemoglobin to 3-month average glucose (ADAG formula) and back

HbA1c, %

Average glucose (eAG)

7,8 mmol/L

140 mg/dL

Diabetes — target met for most

Reverse: glucose → HbA1c

≈ 6 %

ADAG equation: eAG = 28.7 × HbA1c − 46.7 (mg/dL). HbA1c reflects average glucose over ~3 months. Targets are individual — ask your doctor.

Treatment targets (ADA guidance)

  • • Most adults: <7.0% (ADA) / <6.5% (AACE)
  • • Pregnancy (pregestational diabetes): <6.0–6.5%
  • • Older / comorbid patients: <7.5–8.5%