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Convert mmol/l to mg/dl : Diabetes Buddies
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Converting Blood Glucose Levels from mmol/l to mg/dl

There are two measurement sytsems for measuring blood glucose levels, the 'World Standard' of mmol/l and the US system of mg/dl

The US system will eventually be replaced by the World Standard, but until it does we need to be able to understand both.

The simple way to convert is to multiply or divide by 18, the following table makes it a little easier.

mmol/l
mg/dl
Fingertip Blood Sample Level
2
36
 
dangerously low
3
54
 
low, you need to eat something quickly
4
72
 
slightly low
5
90
 
normal before eating
6
108
 
normal before eating
7
126
 
normal before eating
8
144
 
maximum before bedtime
9
162
 
10
180
 
maximum 1-2 hours after a meal
11
198
 
12
216
 
13
234
 
14
252
 
15
270
 
16
288
 
17
306
 
18
324
 
19
342
 
20
360
 
25
450
 
30
540