Free Diabetes Risk Calculator
Check your blood sugar levels against clinical thresholds — find out if you are normal, prediabetic, or diabetic in seconds.
Summary
Name: | Age: | Gender:
Blood Sugar Reference Chart
| Category | Fasting Value (mg/dL) | Post Prandial (mg/dL) | ||
|---|---|---|---|---|
| Min | Max | Just after eating | 2 hrs after glucose | |
| Normal | 70 | 100 | 170–200 | <140 |
| Early Diabetes | 101 | 126 | 190–230 | 140–200 |
| Established Diabetes | >126 | — | 230–300 | >200 |
Diabetes Diet Tips
- Focus on non-starchy vegetables like spinach, broccoli, and bell peppers.
- Choose whole grains over refined carbohydrates.
- Include lean proteins such as chicken, fish, tofu, and legumes.
- Limit added sugars and processed foods in your diet.
- Monitor portion sizes and be mindful of total carbohydrate intake.
Health Tips
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Why Knowing Your Blood Sugar Levels Matters
Understanding your blood sugar (glucose) levels is one of the most powerful steps you can take for your long-term health. Knowledge is power, and early detection is key. Many people live with slightly elevated blood sugar, a condition known as prediabetes, without any obvious symptoms. This is a critical warning stage. If left unmanaged, prediabetes can progress to type 2 diabetes, significantly increasing the risk of serious health complications, including.
India context: India has the second highest number of people with diabetes in the world — over 101 million adults as of 2023, according to the Indian Council of Medical Research. South Asians develop type 2 diabetes at lower BMI and younger ages compared to Western populations, making early screening especially important.
If you are Indian, overweight, above 35, or have a family history of diabetes — regular blood sugar checks are strongly recommended.
Normal Blood Sugar Levels — What the Numbers Mean
Blood sugar is measured in milligrams per deciliter (mg/dL).
Here are the standard clinical thresholds used worldwide:
| Category | Fasting (mg/dL) | Post-Meal 2hr (mg/dL) | HbA1c (%) |
|---|---|---|---|
| Normal | Below 100 | Below 140 | Below 5.7 |
| Prediabetes | 100 – 125 | 140 – 199 | 5.7 – 6.4 |
| Diabetes | 126 or above | 200 or above | 6.5 or above |
These thresholds are based on American Diabetes Association (ADA) and WHO guidelines. Indian guidelines from ICMR use the same thresholds.
How to Use This Calculator
- Enter your age, gender, and name — your name is used only to generate your personalised PDF report.
- Enter your fasting blood sugar (after 8 hours without food) and post-meal blood sugar (2 hours after eating).
- HbA1c is optional — if you have a recent lab report, add it for a more complete assessment.
Click Calculate to see your result instantly.
What Your Results Mean
Your result will fall into one of three categories. Here’s what each means and the recommended next steps:
- Normal: This is great news! Your blood sugar levels are within a healthy range. The best next step is to continue your healthy habits, including a balanced diet and regular exercise, to maintain these excellent results.
- Prediabetes: This is a critical warning sign, but it’s also an opportunity. It means your blood sugar is higher than normal but not yet in the diabetic range. Type 2 diabetes is often preventable, and this result is your chance to take action through lifestyle changes. It is highly recommended to discuss this result with your doctor.
- Diabetic: This result indicates that your blood sugar levels are in the diabetic range. It is essential to see a healthcare provider as soon as possible. They can perform formal tests to confirm a diagnosis and work with you to create a personalized management plan.
Many people with prediabetes have no symptoms at all. Some may notice increased thirst, fatigue after meals, or darkened skin around the neck and armpits (acanthosis nigricans) — a common early sign in South Asians.
Common Symptoms of Diabetes
If your results indicate prediabetes or diabetes, or if you are experiencing any of the following common symptoms, it is important to consult a healthcare professional:
- Frequent urination
- Increased thirst and hunger
- Unexplained weight loss
- Constant fatigue or lack of energy
- Blurred vision
- Slow-healing sores or frequent infections
- Tingling or numbness in your hands or feet
Who Is at Higher Risk of Diabetes in India?
Type 2 diabetes risk is higher if you have one or more of the following:
- Family history of diabetes (parent or sibling)
- BMI above 23 (Indian threshold — lower than Western 25)
- Waist circumference above 90 cm (men) or 80 cm (women)
- Age above 35
- Sedentary lifestyle or desk job
- History of gestational diabetes
- PCOS (polycystic ovary syndrome)
- High blood pressure or cholesterol
South Asians are genetically predisposed to insulin resistance, meaning blood sugar problems can develop even at a healthy body weight by Western standards.
Annual screening is recommended for anyone above 30 with one or more risk factors.