Practical digital tools for everyday life
Business software for growing organizations
Free, fast, and easy to use
Track fasting and post-meal glucose levels, estimate 90-day HbA1c, calculate Time In Range, log insulin doses, and export printable clinical PDF reports.
ADA target evaluation, estimated HbA1c conversion, and doctor report PDF exports
Real-time feedback on Fasting (70–130 mg/dL) and Post-prandial (< 180 mg/dL) target zones according to ADA standards.
Automatically converts your average glucose readings into estimated 90-day glycated hemoglobin percentages.
Generate a clean, single or multi-page clinical blood glucose log PDF with telemetry summaries and target breakdowns.
Everything you need to know about tracking blood sugar, eA1c, and doctor reports
According to the American Diabetes Association (ADA 2024), target ranges for non-pregnant adults are: Fasting / Pre-meal between 70–130 mg/dL (3.9–7.2 mmol/L), and 1–2 hours after meals under 180 mg/dL (< 10.0 mmol/L).
Click 'Doctor Report (PDF)' in the top header to generate a clinical PDF report formatted for medical consultations, complete with Time In Range, eA1c estimate, and full chronological log history. You can also export to CSV for spreadsheets.
The mathematical formula established by the ADAG (A1c-Derived Average Glucose) study is: eA1c (%) = (Average Glucose in mg/dL + 46.7) / 28.7.
Seamlessly switch between US mg/dL and International mmol/L units with instant bidirectional conversion.
If blood sugar falls below 70 mg/dL, consume 15 grams of fast-acting carbohydrates (such as 4 oz fruit juice or 3–4 glucose tablets), wait 15 minutes, and re-test. Repeat until blood sugar is ≥ 70 mg/dL.
Click the unit toggle button in the top bar to switch between mg/dL (used in the US) and mmol/L (used internationally in Europe, Canada, and Australia).
Time In Range is the percentage of readings that fall within the safe 70–180 mg/dL target zone. Modern diabetes guidelines target at least 70% Time In Range.
No. All glucose entries, carb logs, and notes are processed 100% locally in your web browser memory with zero external transmission.
Check exactly 2 hours after the start of your meal to capture your peak post-prandial glycemic response.
Drink plenty of water to flush ketones, check for blood/urine ketones if you have Type 1 diabetes, avoid intense exercise, and consult your diabetes care team.
Yes! The meal context selector includes Bedtime and 3 AM Night checks to detect nighttime hypoglycemia.
No. The Diabetes Sugar Log & Glycemic Hub is 100% free with no sign-up or app download required.
Yes! The interface is fully responsive and touch-optimized for mobile browsers and tablets.