Blood Sugar Converter
Convert glucose readings between mg/dL and mmol/L with normal-range diabetes guide.
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About the Blood Sugar Converter
Blood Sugar Converter switches a blood-glucose reading between the two common units: mg/dL (used in India, the USA and several Asian countries) and mmol/L (used in the UK, Europe, Canada and Australia). The conversion factor is exactly 1 mmol/L = 18.0182 mg/dL. After converting the value, the tool also classifies it against the WHO reference ranges — fasting normal at 70–99 mg/dL (3.9–5.5 mmol/L), pre-diabetic at 100–125 mg/dL, diabetic at ≥126 mg/dL — so you can see at a glance whether the reading is in a healthy band, borderline or elevated. Works for integer and decimal readings.
How to use
- Enter the reading and choose its current unit (mg/dL or mmol/L).
- Click Convert to see the value in the other unit.
- Read the colour-coded range hint to interpret the result.
Benefits & key features
- Conversion in both directions, with full decimal precision.
- Reference range shown next to the converted value for context.
- Works on any reading format from glucometers or lab reports.
- Pairs with the BMI and TDEE calculators for full health screening.
Pro tip
Always discuss readings with a clinician. Single readings fluctuate widely; trends across several weeks matter more than any individual measurement.
Why choose toolsfy for Health & Fitness tools?
A BMI calculator that harvests your email address, a TDEE estimator that upsells coaching — the health-and-fitness web is riddled with dark patterns. toolsfy's tools compute the same peer-reviewed equations (Mifflin-St Jeor for TDEE, WHO BMI bands, U.S. Navy body-fat formula) without asking for anything more than the numbers needed to run the math.
Common use cases
- Personal trainers running quick BMI and body-fat estimates for new clients during their first consultation, with nothing logged or stored.
- Home cooks planning a short calorie-deficit cycle and wanting the daily target in plain numbers rather than a vague "app score".
- Patients preparing for a doctor's appointment by converting a mg/dL blood-sugar reading into mmol/L (or vice versa) before their consult.
Frequently asked questions
Is this medical advice?
No. These tools are educational and use standard published equations. Always discuss real health decisions with a licensed clinician.
How accurate are estimates like TDEE or body fat?
They are good screening estimates for a general adult population. Individual metabolism can vary ±10–15%, so treat the number as a starting point, not a target.
Do you store my weight, height or health data?
Never. The values are only used inside this tab to compute the result. Close the tab and every trace is gone.