For most adults with diabetes, the general target is a fasting blood sugar between 80 and 130 mg/dL and less than 180 mg/dL two hours after eating. These numbers come from the American Diabetes Association’s current standards, but your personal targets may be tighter or more relaxed depending on your age, health history, and how long you’ve had diabetes.
Daily Blood Sugar Targets for Adults
The standard targets most doctors use as a starting point for non-pregnant adults with diabetes are:
- Fasting (before meals): 80 to 130 mg/dL
- Two hours after eating: less than 180 mg/dL
- A1C: less than 7%
These ranges are meant to reduce the risk of long-term complications like nerve damage, kidney disease, and vision loss while keeping the day-to-day risk of dangerous lows manageable. An A1C of 7% roughly corresponds to an average blood sugar of about 154 mg/dL over the previous two to three months.
It’s worth understanding how these numbers compare to someone without diabetes. A non-diabetic fasting blood sugar is below 100 mg/dL, and anything from 100 to 125 mg/dL falls into the prediabetes range. A fasting reading of 126 mg/dL or higher on two separate tests is what qualifies as diabetes. So the target range for someone already diagnosed is intentionally wider than “normal,” reflecting the reality that perfect glucose control isn’t always safe or achievable.
Why Your Target Might Be Different
Not everyone with diabetes gets the same goal. The 2024 ADA Standards of Care lay out specific situations where tighter or looser control makes more sense.
A stricter A1C target of less than 6.5% may be reasonable if you were recently diagnosed, you’re managing your blood sugar primarily through diet and exercise, and you’re not experiencing episodes of low blood sugar. Younger adults who are otherwise healthy and expected to live at least 15 more years are the most common candidates for tighter targets, because they have more years for elevated blood sugar to cause cumulative damage.
A more relaxed A1C target of less than 8% is often appropriate if you have a history of severe low blood sugar episodes, advanced complications from diabetes, multiple other chronic conditions, or a limited life expectancy. For older adults (roughly 80 and above) or those living in long-term care, the priority shifts from hitting a number to simply preventing symptoms of high blood sugar like excessive thirst, frequent urination, and fatigue. Pushing for aggressive targets in these situations can cause more harm than benefit, since the risks of dangerously low blood sugar outweigh the long-term payoff.
Targets for Children With Diabetes
Children with diabetes generally aim for an A1C below 7%, similar to adults. Their daily blood sugar ranges tend to be slightly wider to account for unpredictable eating patterns, activity levels, and the fact that young children may not be able to recognize or communicate symptoms of low blood sugar.
Starting blood sugar goals for children are typically 71 to 180 mg/dL during the day and 101 to 200 mg/dL at bedtime. These targets get adjusted based on the child’s age, size, activity level, and how much their pancreas is still producing insulin. A pediatric endocrinologist will usually fine-tune these numbers over time as patterns emerge from daily monitoring.
Targets During Pregnancy
Pregnancy requires much tighter blood sugar control because even moderately elevated glucose can affect fetal development. The American College of Obstetricians and Gynecologists recommends the following targets for pregnant women with type 1 or type 2 diabetes:
- Fasting: below 95 mg/dL
- One hour after eating: below 140 mg/dL
- Two hours after eating: below 120 mg/dL
These are notably lower than the standard adult targets. Frequent blood sugar checks throughout the day, sometimes six or more times, are typical during pregnancy to stay within this narrow range.
What Low Blood Sugar Looks Like
Aiming for lower numbers always carries the tradeoff of more frequent lows. Blood sugar below 70 mg/dL is considered mild hypoglycemia. You might feel shaky, sweaty, dizzy, or suddenly hungry. The standard treatment is to eat 15 to 20 grams of fast-acting carbohydrate (about four glucose tablets or half a cup of juice), then recheck after 15 minutes.
Blood sugar below 54 mg/dL is more serious and can cause confusion, difficulty speaking, or loss of coordination. At this level, you may need help from another person. Anyone who experiences episodes this severe should have a prescription for emergency glucagon, which raises blood sugar rapidly when someone can’t safely eat or drink.
How to Use These Numbers Day to Day
Knowing the target ranges is only useful if you’re checking regularly enough to spot patterns. A single reading doesn’t tell you much. What matters is whether your numbers consistently fall within your target range over days and weeks.
If you use a continuous glucose monitor, you’ll often hear the term “time in range,” which refers to the percentage of the day your blood sugar stays between 70 and 180 mg/dL. For most adults with diabetes, spending at least 70% of the day in that window is a strong indicator of good control, and it correlates closely with an A1C below 7%.
Post-meal spikes are normal, even in people without diabetes. The key is how high those spikes go and how quickly your blood sugar comes back down. If you’re consistently above 180 mg/dL two hours after meals, that’s a signal to look at portion sizes, carbohydrate intake, medication timing, or activity levels. Fasting numbers that creep above 130 mg/dL most mornings can point to overnight blood sugar patterns that may need a different approach.
Your personal targets should be a conversation with whoever manages your diabetes care. The numbers above are starting points, not rigid rules. The best target for you balances long-term protection against complications with a low day-to-day risk of dangerous lows, and that balance looks different for a 30-year-old newly diagnosed with type 2 than it does for a 75-year-old who’s managed diabetes for decades.