A1c 6.7%
A1c of 6.7%: what it means
An A1c of 6.7% is in the diabetes range, and below the common goal of 7% for adults who already have diabetes. It maps to about 146 mg/dL.
Average glucose from the ADAG formula, eAG = 28.7 × A1c − 46.7 (Nathan 2008). Categories from the ADA Standards of Care (ADA Standards 2026, sec. 2).
What an A1c of 6.7% means
- The ADA criteria list an A1c of 6.5% or higher as one way to diagnose diabetes. Below 6.5% down to 5.7% is the prediabetes range. (ADA Standards 2026, sec. 2)
- Any test used to diagnose diabetes needs a second measurement to confirm it, unless there are clear symptoms. For diagnosis, blood from a vein should go to a lab using an NGSP-certified method. (NIDDK)
- The ADA Standards of Care describe an A1c goal below 7% as appropriate for many nonpregnant adults with diabetes, as long as it can be reached without significant hypoglycemia (low blood sugar). (ADA Standards 2026, sec. 6)
- Repeat tests on the same sample vary a little. NIDDK gives the example that a result of 6.8% could read anywhere from 6.4% to 7.2% on a repeat test. (NIDDK)
Questions to ask your doctor
- Is this a confirmed diagnosis, or does it need a repeat test?
- What A1c goal is right for me, and why?
- How often should my A1c be checked?
- Does my current treatment plan need to change?
Read next: A1c goals in diabetes, A1c high but glucose normal. Lab reports in mmol/mol? Use the HbA1c mmol/mol converter.
Nearby values
| A1c | mg/dL | mmol/L | Category |
|---|---|---|---|
| 6.2% | 131 | 7.3 | Prediabetes |
| 6.3% | 134 | 7.4 | Prediabetes |
| 6.4% | 137 | 7.6 | Prediabetes |
| 6.5% | 140 | 7.8 | Diabetes |
| 6.6% | 143 | 7.9 | Diabetes |
| 6.7% | 146 | 8.1 | Diabetes |
| 6.8% | 148 | 8.2 | Diabetes |
| 6.9% | 151 | 8.4 | Diabetes |
| 7.0% | 154 | 8.6 | Diabetes |
| 7.1% | 157 | 8.7 | Diabetes |
| 7.2% | 160 | 8.9 | Diabetes |
All values from 4.0% to 14.0% are in the A1c chart. Planning a retest? See how fast A1c can change. Over 65? See A1c by age.
Try another number
Estimated average glucose (eAG) = 28.7 × A1c − 46.7, from the ADAG study. mmol/L = mg/dL ÷ 18.016. Real averages vary from person to person at the same A1c. This is a conversion, not a diagnosis.
Other key numbers
6.5 mmol/L
6.6 mmol/L
6.8 mmol/L
7.0 mmol/L
7.1 mmol/L
7.3 mmol/L
7.4 mmol/L
7.6 mmol/L
7.8 mmol/L
8.6 mmol/L
9.4 mmol/L
10.2 mmol/L
10.9 mmol/L
11.7 mmol/L
13.3 mmol/L
14.9 mmol/L
16.5 mmol/L
Sources
- Nathan DM, Kuenen J, Borg R, Zheng H, Schoenfeld D, Heine RJ; A1c-Derived Average Glucose (ADAG) Study Group. Translating the A1C assay into estimated average glucose values. Diabetes Care. 2008;31(8):1473-1478. doi.org/10.2337/dc08-0545
- American Diabetes Association Professional Practice Committee. 2. Diagnosis and Classification of Diabetes: Standards of Care in Diabetes 2026. Diabetes Care. 2026;49(Suppl 1). doi.org/10.2337/dc26-S002
- National Institute of Diabetes and Digestive and Kidney Diseases (NIH). The A1C Test & Diabetes. www.niddk.nih.gov/health-information/diagnostic-tests/a1c-test
- American Diabetes Association Professional Practice Committee. 6. Glycemic Goals, Hypoglycemia, and Hyperglycemic Crises: Standards of Care in Diabetes 2026. Diabetes Care. 2026;49(Suppl 1). doi.org/10.2337/dc26-S006
Written and maintained by the controla1clevels.com editorial team. We do not have a medical reviewer; every claim links to its primary source above. Last reviewed: 2026-10-27. Spotted an error? See About.