A blood glucose or blood sugar chart classifies the ideal blood sugar levels throughout the day, including before and after meals. Blood sugar charts help those with diabetes self-monitor and calculate their blood sugar test results.
Monitoring blood sugar levels is a crucial part of managing diabetes.
Most of the blood sugar charts show recommended levels as a range, allowing for differences among individual people.
The following blood sugar charts have been taken as a reference from The American Diabetes Association (ADA), Joslin Diabetes Center (JDC), and American Association of Clinical Endocrinologists (AACE).
Time of check
Blood sugar levels for those without diabetes
Target blood sugar levels for those with diabetes
|Fasting (before breakfast)||less than 100 mg/dL||80 – 130 mg/dL (ADA)|
70-130 mg/dL (JDC)
less than 110 (AACE)
|Before meals||less than 110 mg/dL||70-130 mg/dL (JDC)|
|2 hrs. After meal|
1-2 hrs. After meal
|less than 140 mg/dL||less than 180 mg/dL (ADA & JDC)|
less than 140 (AACE)
|Bedtime||less than 120 mg/dL||between 90 – 150 mg/dL (JDC)|
|A1C levels||less than 5.7 percent||less than 7 percent|
Blood Sugar Meter Readings
Blood Sugar readings vary from person to person. A good blood sugar level for one person may be high or low for another.
Blood sugar level
|Before meal||72 – 109 mg/dL||110 – 144 mg/dL||145 – 180 mg/dL|
|2 hours after meal||90 – 126 mg/dL||127 – 180 mg/dL||181 – 234 mg/dL|
Gestational Diabetes Levels
For women suffering from gestational diabetes, the blood sugar recommendations are different from people with Type 1 and Type 2.
Time of check
Blood sugar level in mg/dL
|Fasting or before breakfast||60 – 90 mg/dL|
|Before meals||60 – 90 mg/dL|
|1 hour after meal||100 – 120 mg/dL|
People with high or low blood sugar should be worried.
Fasting blood sugar level
Risk level and suggested action
|50 mg/dL or less||Dangerously low, seek medical attention|
|70 – 90 mg/dL||Possibly too low, get sugar if experiencing symptoms of low blood sugar or see a doctor|
|90-120 mg/dL||Normal range|
|120-160 mg/dL||Medium, see a doctor|
|160 – 240 mg/dL||Too high, work to lower blood sugar levels|
|240-300 mg/dL||Too high, a sign of out of control diabetes, see a doctor|
|300 mg/dL or above||Very high, seek immediate medical attention|
Diabetes is becoming common amongst children and young adults. As a parent, you need to know the normal and acceptable range of blood sugar levels in children.
Age of Child (Years)
|Under 6 years||100-180 mg/dl||110-200 mg/dl||7.5% – 8.5%|
|6 to 12 years||90-180 mg/dl||100-180 mg/dl||Less than 8%|
|13 to 18 years||90-130 mg/dl||90-150 mg/dl||Less than 7.5%|
There is always a way to control and reduce blood sugar levels as long as the levels have not reached the critical stages.