Blood sugar 64 mg/dl — what it means
Where 64 mg/dl sits — adjust to your situation
64 mg/dl as a fasting reading
Low (hypoglycemia)
A fasting reading below 70 mg/dl counts as hypoglycemia. If you feel shaky, sweaty or confused, treat it right away with fast-acting carbohydrates.
Fasting = no food for at least 8 hours, typically first thing in the morning. More on fasting readings.
64 mg/dl after eating
Low (hypoglycemia)
Below 70 mg/dl after a meal is unusual and counts as hypoglycemia — worth discussing with your doctor, especially if it happens repeatedly.
Guidelines measure 2 hours after the start of a meal. More on post-meal readings.
How 64 mg/dl compares to a typical day
The curve shows how glucose moves through a typical day in someone without diabetes: a steady baseline in the 80s with short peaks after meals that settle within about two hours. Your reading is the horizontal line — below the band a typical day stays in.
What to do with a reading of 64 mg/dl
Use the 15-15 rule: 15 g of fast carbohydrates, wait 15 minutes, re-test. Repeat until you are above 70 mg/dl, then eat a small snack with protein.
Save this reading
Stored only in your browser on this device — it never leaves your phone or computer. Build a history you can chart, print for your doctor, or export.
Questions about 64 mg/dl
Is 64 mg/dl blood sugar normal?
It depends on when you measured. Fasting, 64 mg/dl is low (hypoglycemia) (normal fasting range: 70–99 mg/dl). Two hours after a meal it is low (hypoglycemia) (normal post-meal range: 70–139 mg/dl).
What is 64 mg/dl in mmol/L?
64 mg/dl equals 3.6 mmol/L. Divide mg/dl by 18 to convert (used in the UK, Canada, Australia and most of Europe).
Is 64 mg/dl different for women, men or children?
No — the diagnostic thresholds are the same for men, women and children. The one exception is pregnancy, which uses stricter cut-offs (gestational diabetes screening flags fasting readings from 92 mg/dl). Age changes treatment goals for people already diagnosed, not how a reading is classified.
How accurate is a home reading of 64 mg/dl?
Home meters are allowed a ±15 % error, so a displayed 64 can correspond to a true value anywhere from 54 to 74 mg/dl. Fasting, that window crosses the 70 mg/dl line — a single home reading of 64 cannot settle which side you are truly on. That is a lab-test question, not a meter question.
Should I re-test after a reading of 64 mg/dl?
Yes, single readings vary by 10–15 %. Wash your hands, use a fresh strip, and compare the same situation (fasting with fasting). A pattern over days tells you far more than one number — the journal below saves readings on this device.
BloodSugarEasy — blood sugar reading report
Reading: 64 mg/dl (3.6 mmol/L)
Fasting classification: Low (hypoglycemia) · After-meal classification: Low (hypoglycemia)
Reference: ADA criteria, reviewed 2026-08-21 · https://bloodsugareasy.com/blood-sugar-64/
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