Blood glucose is measured in milligrams per deciliter (mg/dL) in the United States, and millimoles per liter (mmoles/L) in many other countries (Canada, England, Australia) This is important to remember if you are talking with someone from a country who uses a different measurement system than you do.

• The conversion factor is about 18.
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• Divide the U.S. value by 18 to get the European value (mg/dl / 18 = mmol/L).
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• Multiply the European value by 18 to get the U.S. value (mmol/L x 18 = mg/dl).
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• Example: In the U.S., a bg of 100 mg/dL is about the same as 5.6 mmol/L. Here's a chart to help you.

Blood Glucose Conversion Chart

mg/dL	mmol/L	mg/dL	mmol/L	mg/dL	mmol/L	mg/dL	mmol/L
(US)	(Europe)	(US)	(Europe)	(US)	(Europe)	(US)	(Europe)
20	1.1	130	7.2	225	12.5	340	18.9
30	1.7	135	7.5	230	12.8	350	19.4
40	2.2	140	7.8	235	13.1	360	20.0
50	2.8	145	8.1	240	13.3	370	20.6
55	3.1	150	8.3	245	13.6	380	21.1
60	3.3	155	8.6	250	13.9	390	21.7
65	3.6	160	8.9	255	14.2	400	22.2
70	3.9	165	9.2	260	14.4	410	22.8
75	4.2	170	9.4	265	14.7	420	23.3
80	4.4	175	9.7	270	15.0	430	23.9
85	4.7	180	10.0	275	15.3	440	24.4
90	5.0	185	10.3	280	15.6	460	25.6
95	5.3	190	10.6	285	15.8	480	26.7
100	5.6	195	10.8	290	16.1	500	27.8
105	5.8	200	11.1	295	16.4	520	28.9
110	6.1	205	11.4	300	16.7	540	30.0
115	6.4	210	11.7	310	17.2	560	31.1
120	6.7	215	11.9	320	17.8	580	32.2
125	6.9	220	12.2	330	18.3	600	33.3