How to convert mmol/l to mg/dl? – Your useful guide to practical life.


I know that you keep reading thousands of articles on diabetes. Or you keep measuring your blood sugar levels by a meter which is not using the measurement system that you are used to.

As a diabetic you may face some difficulties on how to convert mmol/l to mg/dl or mg/dl to mmol/l.

Actually, there are two measurement systems for measuring blood sugar levels.

The first one is world standard and the second one is US standard. The world standard uses mmol/l, while US standard uses mg/dl.

Now, if you want to convert mg/dl of glucose to mmol/l, you can divide the result in mg/dl by 18 or multiply by 0.055.

But, if you want to convert mmol/l of glucose to mg/dl, just multiply by 18.

In case you need more details, below I’m showing you an interpretation of the numbers for which of the measurement systems.

Undestanding diabetes blood sugar reading

mmol/l mg/dl Interpretation
2.0
35
Extremely low
3.0
55
Low
4.0
75
Slightly low
4.4
80
Normal
5.5
100
Normal
5 to 6
90-110
Normal before meal in nondiabetics
8.0
150
Normal After meal in nondiabetics
10.0
180
Maximum After meal in nondiabetics
15.0
270
A little high to very high depending on patient
20.0
360
Very high
22.0
400
Maximum mg/dl for some meters and strips
33.0
600
High danger




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