Fill in the details and click Calculate to see your results.
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📘 About the Blood Sugar Calculator
Normal fasting blood sugar is below 100 mg/dL; 100–125 is prediabetes and 126 or higher, on two tests, is diabetes. Two hours after a meal or glucose drink, below 140 is normal, 140–199 prediabetes and 200 or more diabetes.
HbA1c shows your average sugar over about three months: below 5.7% is normal, 5.7–6.4% prediabetes and 6.5% or more diabetes. These are the American Diabetes Association criteria, also used by ICMR in India.
✏️ Worked examples
Fasting 110 mg/dL
You get| Result | Prediabetes range |
| Your value | 110 mg/dL = 6.1 mmol/L |
| Test | Fasting (8+ hours without food) |
Prediabetes range.
HbA1c 6.8%
You get| Result | Diabetes range |
| Average glucose (eAG) | 148 mg/dL (8.2 mmol/L) |
| HbA1c (IFCC) | 51 mmol/mol |
Diabetes range; average glucose 148 mg/dL (8.2 mmol/L).
🧭 How to use this calculator
What you enter
- Test
- Result
- Unit (for glucose)
❓ Frequently asked questions
What is normal sugar level?
Fasting 70–99 mg/dL, and below 140 mg/dL two hours after eating. HbA1c below 5.7%.
Is 110 fasting sugar normal?
No — 100–125 mg/dL fasting is the prediabetes range. Diet, exercise and weight loss can often bring it back to normal; repeat the test and see a doctor.
What is low blood sugar?
Below 70 mg/dL is low (hypoglycaemia) and below 54 is dangerously low. Take 15 g of fast sugar (glucose, juice, sugar in water), recheck after 15 minutes, and get help if it stays low.