A1C conversion chart

This is the internet's only exhaustive A1C to glucose (eAG) conversion chart. While the most common A1C levels are likely between 4.0 and 15.0, we've decided to include values from 1.0 to 20.0 in the interest of creating a truly exhaustive list.

For reference the formula for converting A1C to glucose mg/dl is 28.7 x A1C – 46.7. Similarly, the formula for converting A1C to glucose mmol/l is (28.7 x A1C – 46.7) / 18.

A1C	Glucose (eAG) mg/dl	Glucose (eAG) mmol/l
1.0	-18	-1
1.1	-15	-0.8
1.2	-12	-0.7
1.3	-9	-0.5
1.4	-7	-0.4
1.5	-4	-0.2
1.6	-1	-0
1.7	2	0.1
1.8	5	0.3
1.9	8	0.4
2.0	11	0.6
2.1	14	0.8
2.2	16	0.9
2.3	19	1.1
2.4	22	1.2
2.5	25	1.4
2.6	28	1.6
2.7	31	1.7
2.8	34	1.9
2.9	37	2
3.0	39	2.2
3.1	42	2.3
3.2	45	2.5
3.3	48	2.7
3.4	51	2.8
3.5	54	3
3.6	57	3.1
3.7	59	3.3
3.8	62	3.5
3.9	65	3.6
4.0	68	3.8
4.1	71	3.9
4.2	74	4.1
4.3	77	4.3
4.4	80	4.4
4.5	82	4.6
4.6	85	4.7
4.7	88	4.9
4.8	91	5.1
4.9	94	5.2
5.0	97	5.4
5.1	100	5.5
5.2	103	5.7
5.3	105	5.9
5.4	108	6
5.5	111	6.2
5.6	114	6.3
5.7	117	6.5
5.8	120	6.7
5.9	123	6.8
6.0	126	7
6.1	128	7.1
6.2	131	7.3
6.3	134	7.5
6.4	137	7.6
6.5	140	7.8
6.6	143	7.9
6.7	146	8.1
6.8	148	8.2
6.9	151	8.4
7.0	154	8.6
7.1	157	8.7
7.2	160	8.9
7.3	163	9
7.4	166	9.2
7.5	169	9.4
7.6	171	9.5
7.7	174	9.7
7.8	177	9.8
7.9	180	10
8.0	183	10.2
8.1	186	10.3
8.2	189	10.5
8.3	192	10.6
8.4	194	10.8
8.5	197	11
8.6	200	11.1
8.7	203	11.3
8.8	206	11.4
8.9	209	11.6
9.0	212	11.8
9.1	214	11.9
9.2	217	12.1
9.3	220	12.2
9.4	223	12.4
9.5	226	12.6
9.6	229	12.7
9.7	232	12.9
9.8	235	13
9.9	237	13.2
10.0	240	13.4
10.1	243	13.5
10.2	246	13.7
10.3	249	13.8
10.4	252	14
10.5	255	14.1
10.6	258	14.3
10.7	260	14.5
10.8	263	14.6
10.9	266	14.8
11.0	269	14.9
11.1	272	15.1
11.2	275	15.3
11.3	278	15.4
11.4	280	15.6
11.5	283	15.7
11.6	286	15.9
11.7	289	16.1
11.8	292	16.2
11.9	295	16.4
12.0	298	16.5
12.1	301	16.7
12.2	303	16.9
12.3	306	17
12.4	309	17.2
12.5	312	17.3
12.6	315	17.5
12.7	318	17.7
12.8	321	17.8
12.9	324	18
13.0	326	18.1
13.1	329	18.3
13.2	332	18.5
13.3	335	18.6
13.4	338	18.8
13.5	341	18.9
13.6	344	19.1
13.7	346	19.2
13.8	349	19.4
13.9	352	19.6
14.0	355	19.7
14.1	358	19.9
14.2	361	20
14.3	364	20.2
14.4	367	20.4
14.5	369	20.5
14.6	372	20.7
14.7	375	20.8
14.8	378	21
14.9	381	21.2
15.0	384	21.3
15.1	387	21.5
15.2	390	21.6
15.3	392	21.8
15.4	395	22
15.5	398	22.1
15.6	401	22.3
15.7	404	22.4
15.8	407	22.6
15.9	410	22.8
16.0	413	22.9
16.1	415	23.1
16.2	418	23.2
16.3	421	23.4
16.4	424	23.6
16.5	427	23.7
16.6	430	23.9
16.7	433	24
16.8	435	24.2
16.9	438	24.4
17.0	441	24.5
17.1	444	24.7
17.2	447	24.8
17.3	450	25
17.4	453	25.1
17.5	456	25.3
17.6	458	25.5
17.7	461	25.6
17.8	464	25.8
17.9	467	25.9
18.0	470	26.1
18.1	473	26.3
18.2	476	26.4
18.3	479	26.6
18.4	481	26.7
18.5	484	26.9
18.6	487	27.1
18.7	490	27.2
18.8	493	27.4
18.9	496	27.5
19.0	499	27.7
19.1	501	27.9
19.2	504	28
19.3	507	28.2
19.4	510	28.3
19.5	513	28.5
19.6	516	28.7
19.7	519	28.8
19.8	522	29
19.9	524	29.1
20.0	527	29.3

Sources

Translating the A1C assay into estimated average glucose values - National Library of Medicine
Measurement of Hemoglobin A1C: A new twist on the path to harmony - National Center for Biotechnology Information

Disclaimer

This page is intended to be an educational reference only. Please check with your HSA administrator or health insurance provider if you have any questions about your plan's specific contribution limits.