Chart
A1c chart
Every A1c from 4.0% to 14.0%, with its estimated average glucose and ADA category. Use your browser's print option to print it or save it as a PDF.
eAG = 28.7 × A1c − 46.7 (Nathan 2008). mmol/L = mg/dL ÷ 18.016. IFCC from the NGSP master equation (NGSP). Categories: normal below 5.7%, prediabetes 5.7% to 6.4%, diabetes 6.5% or higher (ADA Standards 2026, sec. 2). Rows in bold have their own page. Looking for an A1c chart by age? See A1c by age. En español.
| A1c | eAG mg/dL | eAG mmol/L | IFCC mmol/mol | ADA category |
|---|---|---|---|---|
| 4.0% | 68 | 3.8 | 20 | Normal |
| 4.1% | 71 | 3.9 | 21 | Normal |
| 4.2% | 74 | 4.1 | 22 | Normal |
| 4.3% | 77 | 4.3 | 23 | Normal |
| 4.4% | 80 | 4.4 | 25 | Normal |
| 4.5% | 82 | 4.6 | 26 | Normal |
| 4.6% | 85 | 4.7 | 27 | Normal |
| 4.7% | 88 | 4.9 | 28 | Normal |
| 4.8% | 91 | 5.1 | 29 | Normal |
| 4.9% | 94 | 5.2 | 30 | Normal |
| 5.0% | 97 | 5.4 | 31 | Normal |
| 5.1% | 100 | 5.5 | 32 | Normal |
| 5.2% | 103 | 5.7 | 33 | Normal |
| 5.3% | 105 | 5.9 | 34 | Normal |
| 5.4% | 108 | 6.0 | 36 | Normal |
| 5.5% | 111 | 6.2 | 37 | Normal |
| 5.6% | 114 | 6.3 | 38 | Normal |
| 5.7% | 117 | 6.5 | 39 | Prediabetes |
| 5.8% | 120 | 6.6 | 40 | Prediabetes |
| 5.9% | 123 | 6.8 | 41 | Prediabetes |
| 6.0% | 126 | 7.0 | 42 | Prediabetes |
| 6.1% | 128 | 7.1 | 43 | Prediabetes |
| 6.2% | 131 | 7.3 | 44 | Prediabetes |
| 6.3% | 134 | 7.4 | 45 | Prediabetes |
| 6.4% | 137 | 7.6 | 46 | Prediabetes |
| 6.5% | 140 | 7.8 | 48 | Diabetes |
| 6.6% | 143 | 7.9 | 49 | Diabetes |
| 6.7% | 146 | 8.1 | 50 | Diabetes |
| 6.8% | 148 | 8.2 | 51 | Diabetes |
| 6.9% | 151 | 8.4 | 52 | Diabetes |
| 7.0% | 154 | 8.6 | 53 | Diabetes |
| 7.1% | 157 | 8.7 | 54 | Diabetes |
| 7.2% | 160 | 8.9 | 55 | Diabetes |
| 7.3% | 163 | 9.0 | 56 | Diabetes |
| 7.4% | 166 | 9.2 | 57 | Diabetes |
| 7.5% | 169 | 9.4 | 58 | Diabetes |
| 7.6% | 171 | 9.5 | 60 | Diabetes |
| 7.7% | 174 | 9.7 | 61 | Diabetes |
| 7.8% | 177 | 9.8 | 62 | Diabetes |
| 7.9% | 180 | 10.0 | 63 | Diabetes |
| 8.0% | 183 | 10.2 | 64 | Diabetes |
| 8.1% | 186 | 10.3 | 65 | Diabetes |
| 8.2% | 189 | 10.5 | 66 | Diabetes |
| 8.3% | 192 | 10.6 | 67 | Diabetes |
| 8.4% | 194 | 10.8 | 68 | Diabetes |
| 8.5% | 197 | 10.9 | 69 | Diabetes |
| 8.6% | 200 | 11.1 | 70 | Diabetes |
| 8.7% | 203 | 11.3 | 72 | Diabetes |
| 8.8% | 206 | 11.4 | 73 | Diabetes |
| 8.9% | 209 | 11.6 | 74 | Diabetes |
| 9.0% | 212 | 11.7 | 75 | Diabetes |
| 9.1% | 214 | 11.9 | 76 | Diabetes |
| 9.2% | 217 | 12.1 | 77 | Diabetes |
| 9.3% | 220 | 12.2 | 78 | Diabetes |
| 9.4% | 223 | 12.4 | 79 | Diabetes |
| 9.5% | 226 | 12.5 | 80 | Diabetes |
| 9.6% | 229 | 12.7 | 81 | Diabetes |
| 9.7% | 232 | 12.9 | 83 | Diabetes |
| 9.8% | 235 | 13.0 | 84 | Diabetes |
| 9.9% | 237 | 13.2 | 85 | Diabetes |
| 10.0% | 240 | 13.3 | 86 | Diabetes |
| 10.1% | 243 | 13.5 | 87 | Diabetes |
| 10.2% | 246 | 13.7 | 88 | Diabetes |
| 10.3% | 249 | 13.8 | 89 | Diabetes |
| 10.4% | 252 | 14.0 | 90 | Diabetes |
| 10.5% | 255 | 14.1 | 91 | Diabetes |
| 10.6% | 258 | 14.3 | 92 | Diabetes |
| 10.7% | 260 | 14.5 | 93 | Diabetes |
| 10.8% | 263 | 14.6 | 95 | Diabetes |
| 10.9% | 266 | 14.8 | 96 | Diabetes |
| 11.0% | 269 | 14.9 | 97 | Diabetes |
| 11.1% | 272 | 15.1 | 98 | Diabetes |
| 11.2% | 275 | 15.2 | 99 | Diabetes |
| 11.3% | 278 | 15.4 | 100 | Diabetes |
| 11.4% | 280 | 15.6 | 101 | Diabetes |
| 11.5% | 283 | 15.7 | 102 | Diabetes |
| 11.6% | 286 | 15.9 | 103 | Diabetes |
| 11.7% | 289 | 16.0 | 104 | Diabetes |
| 11.8% | 292 | 16.2 | 105 | Diabetes |
| 11.9% | 295 | 16.4 | 107 | Diabetes |
| 12.0% | 298 | 16.5 | 108 | Diabetes |
| 12.1% | 301 | 16.7 | 109 | Diabetes |
| 12.2% | 303 | 16.8 | 110 | Diabetes |
| 12.3% | 306 | 17.0 | 111 | Diabetes |
| 12.4% | 309 | 17.2 | 112 | Diabetes |
| 12.5% | 312 | 17.3 | 113 | Diabetes |
| 12.6% | 315 | 17.5 | 114 | Diabetes |
| 12.7% | 318 | 17.6 | 115 | Diabetes |
| 12.8% | 321 | 17.8 | 116 | Diabetes |
| 12.9% | 324 | 18.0 | 117 | Diabetes |
| 13.0% | 326 | 18.1 | 119 | Diabetes |
| 13.1% | 329 | 18.3 | 120 | Diabetes |
| 13.2% | 332 | 18.4 | 121 | Diabetes |
| 13.3% | 335 | 18.6 | 122 | Diabetes |
| 13.4% | 338 | 18.8 | 123 | Diabetes |
| 13.5% | 341 | 18.9 | 124 | Diabetes |
| 13.6% | 344 | 19.1 | 125 | Diabetes |
| 13.7% | 346 | 19.2 | 126 | Diabetes |
| 13.8% | 349 | 19.4 | 127 | Diabetes |
| 13.9% | 352 | 19.6 | 128 | Diabetes |
| 14.0% | 355 | 19.7 | 130 | Diabetes |
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
- NGSP. IFCC Standardization of HbA1c: the IFCC and NGSP master equation (NGSP = 0.09148 x IFCC + 2.152). ngsp.org/ifccngsp.asp
- 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
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: 2026-10-25. Spotted an error? See About.