🩸 Blood Sugar Level Checker: Fasting, After Meal & HbA1c

Got a sugar test result? Enter it to see whether it is normal, in the prediabetes range or in the diabetes range — for fasting, after-meal, random sugar or HbA1c.

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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 enter
TestFasting blood sugar (FBS)
Result110
Unit (for glucose)mg/dL (India, US)
You get
ResultPrediabetes range
Your value110 mg/dL = 6.1 mmol/L
TestFasting (8+ hours without food)

Prediabetes range.

HbA1c 6.8%

You enter
TestHbA1c (%)
Result6.8
Unit (for glucose)mg/dL (India, US)
You get
ResultDiabetes 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)

What you get

  • Result
  • Your value
  • Test

❓ 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.