Tool 45/54·Charts & Guides
Normal blood sugar ranges for children by age — including Type 1 diabetes targets — in mg/dL and mmol/L.
Medical Disclaimer
This chart is for educational reference only and does not replace medical advice. Blood sugar targets for your child should be set by a licensed endocrinologist or diabetes care team based on your child's individual history and treatment plan.
Unit
Age Group
School-age children benefit from slightly tighter targets than toddlers while still maintaining a safety buffer. Consistent monitoring before and after meals is especially important.
ADA/ISPAD recommended goals
Broader safe range per ISPAD guidelines
Blood sugar (blood glucose) is the main source of energy for your child's body and brain. Maintaining levels within a healthy range is critical for growth, cognitive development, and energy. For children without diabetes, the body tightly regulates blood glucose through insulin and glucagon. For children with Type 1 diabetes, the pancreas cannot produce insulin, so external monitoring and dosing are required every day.
About These Guidelines
The ranges in this chart are based on guidance from the American Diabetes Association (ADA) and the International Society for Pediatric and Adolescent Diabetes (ISPAD). Individual targets set by a healthcare provider may differ based on a child's history, hypoglycemia awareness, and treatment regimen.
Blood sugar targets for children are not one-size-fits-all. Younger children have unique safety considerations: toddlers under 6 often cannot verbalize hypoglycemia symptoms like shakiness or dizziness, and their developing brains are particularly vulnerable to low blood sugar episodes. This is why targets for the 0–5 age group are set slightly higher — a small risk of running high is safer than the risk of an undetected severe low. As children move into the school years and adolescence, targets are gradually tightened to reduce long-term complications from chronic high blood sugar.
Low Blood Sugar (Hypoglycemia)
High Blood Sugar (Hyperglycemia)
When to Seek Emergency Care
Call emergency services immediately if your child loses consciousness, has a seizure, or cannot swallow. These can be signs of severe hypoglycemia. If prescribed, administer glucagon and call 911. For blood sugar above 300 mg/dL (16.7 mmol/L) with vomiting or difficulty breathing, seek emergency care for possible diabetic ketoacidosis (DKA).
01
For children without diabetes, normal fasting blood sugar is typically 70–100 mg/dL (3.9–5.6 mmol/L). After meals, levels may rise to 140 mg/dL (7.8 mmol/L) but should return to baseline within 2 hours. These ranges apply across age groups, though targets for children with diabetes are set higher to reduce the risk of hypoglycemia.
02
The American Diabetes Association (ADA) and ISPAD recommend the following targets for most children with Type 1 diabetes: before meals 90–180 mg/dL (5.0–10.0 mmol/L), 1–2 hours after meals below 180 mg/dL (10.0 mmol/L), and at bedtime 100–180 mg/dL (5.6–10.0 mmol/L). Younger children (ages 0–5) may have slightly higher targets due to the risk of unrecognized hypoglycemia.
03
Toddlers and preschool-age children cannot reliably communicate symptoms of low blood sugar (hypoglycemia), and their brains are still developing, making hypoglycemia especially harmful. As a result, the ADA recommends keeping fasting and overnight blood sugar slightly higher (100–200 mg/dL) for children under 6. As children grow and can better recognize and report symptoms, targets can be tightened.
04
A blood sugar above 200 mg/dL (11.1 mmol/L) at any time, or above 126 mg/dL (7.0 mmol/L) after fasting, may indicate hyperglycemia and warrants evaluation by a healthcare provider. Persistent readings above 240 mg/dL (13.3 mmol/L) require prompt medical attention as they can signal diabetic ketoacidosis (DKA), especially in children with Type 1 diabetes.
05
Blood sugar below 70 mg/dL (3.9 mmol/L) is considered hypoglycemia in children and requires immediate treatment with 15–20 g of fast-acting carbohydrates (e.g., glucose tablets, juice, or regular soda). Readings below 54 mg/dL (3.0 mmol/L) are considered severe hypoglycemia. If a child loses consciousness or has a seizure, glucagon should be administered and emergency services called.
06
The frequency varies by treatment plan. Children on multiple daily injections or an insulin pump typically check 4–10 times per day: before meals, 1–2 hours after meals, before physical activity, at bedtime, and sometimes overnight. Continuous glucose monitors (CGMs) can reduce fingerstick frequency while providing real-time data. Always follow the schedule recommended by your child's endocrinologist.