Blood Sugar Level Chart Based on Age

Monitoring blood glucose is essential to diabetes management. While there are no universally mandated age-specific targets, ADA clinical guidelines and A1C-to-eAG conversions help define individualized goals. This article includes an age-based glucose guidance chart and outlines the factors that determine personalized targets.

1. Introduction and guidelines

Monitoring blood glucose is essential to diabetes care, but targets are individualized and can vary with age, overall health, time of day, pregnancy and other conditions. While there is no single official age-based blood glucose target, clinical guidelines—most commonly the American Diabetes Association’s 2025 Standards of Care—offer starting points that many clinicians use when setting personalized goals. The ADA relies on the hemoglobin A1C, a 3-month average established in the early 1990s and still considered the clinical standard, to recommend general A1C goals by age group; however, A1C has known limitations, including not reflecting day-to-day glucose variability. To translate A1C into day-to-day targets, the ADA provides an estimated average glucose (eAG) converter. Ultimately, specific glucose or A1C goals should be determined in partnership with your diabetes care team based on your individual circumstances.

2. Blood sugar level chart by age

This chart summarizes target blood glucose ranges (mg/dL) by age and condition. Children and adolescents: 90–130 mg/dL before meals (see guidelines). Adults: 80–130 mg/dL before meals and <180 mg/dL 1–2 hours after eating (see guidelines). Pregnant individuals: 70–95 mg/dL before meals, 110–140 mg/dL 1 hour after meals, 100–120 mg/dL 2 hours after meals (see guidelines). Adults 65 and older: 80–130 mg/dL before meals (see guidelines). People without diabetes: ≤99 mg/dL before meals and ≤140 mg/dL after eating (see guidance).

3. Individualizing targets

Age alone should not determine blood glucose targets. The American Diabetes Association advises individualized goals that take into account overall health, functional status, and other factors. For very young children, prioritizing safety and simpler regimens may be preferable to strict short‑term glycemic control, since simplification can reduce parental anxiety and build confidence to support later intensification. For older adults, tight control is not automatically inappropriate, but less stringent targets may be reasonable for those with limited life expectancy or when treatment harms outweigh benefits. Always set and review targets with your diabetes care team.

4. Learn About Diabetes (related media and context)

Cinnamon has been investigated for its potential to lower blood glucose and may help support glycemic control in people with diabetes. For both type 1 (T1D) and type 2 (T2D) diabetes the primary goal is to keep glucose levels as stable as possible within individualized target ranges, which can differ by person and change as evidence and guidelines evolve. For example, the American Diabetes Association revised its guidance in 2015 in response to concerns about overtreatment and hypoglycemia. A 2014 study noted that children, adults, and older adults who use variable doses of insulin or other glucose‑lowering medications may be more susceptible to overtreatment and should consider a higher low‑glucose threshold, a finding that contributed to the ADA’s adjustment to an 80 mg/dL low threshold.

5. Factors that influence blood sugar goals

Individualized blood glucose targets depend on multiple factors, including diabetes type and duration; patterns of high or low readings and your ability to recognize hypoglycemia; fasting and post‑prandial values; time of day; pregnancy; comorbid conditions and diabetes‑related complications that affect management; and situational influences such as recent or planned exercise, active insulin, concomitant medications that affect glucose, and stress. Discuss these factors with your healthcare team to set appropriate goals.

6. Older adults, prediabetes, and mmol/L guidance

Per the American Diabetes Association, glucose targets should be individualized in consultation with a healthcare professional. For many adults older than 65 in good health, a typical target range is about 70–180 mg/dL (3.9–10.0 mmol/L), with higher targets appropriate for those with multiple comorbidities or limited life expectancy. Prediabetes is defined by a fasting plasma glucose of 100–125 mg/dL (5.6–6.9 mmol/L) or a 2‑hour plasma glucose of 140–199 mg/dL (7.8–11.0 mmol/L) on a 75‑g oral glucose tolerance test. Diabetes is diagnosed with a fasting glucose ≥126 mg/dL (≥7.0 mmol/L), a 2‑hour glucose ≥200 mg/dL (≥11.1 mmol/L) on OGTT, a random glucose ≥200 mg/dL with symptoms, or an HbA1c ≥6.5%. For people with diabetes, the ADA generally recommends preprandial glucose of 80–130 mg/dL (4.4–7.2 mmol/L) and a 1–2 hour postprandial peak <180 mg/dL (<10.0 mmol/L).