HKQuantityTypeIdentifierBloodGlucose — reading blood glucose from Apple Health
HKQuantityTypeIdentifierBloodGlucose carries a unit that differs by roughly 18× between regions, which makes assuming it — instead of reading it — the most consequential mistake on this list.
Open your file
Drop your file here
export.zip straight from the Health app — do not unzip it
No account. No upload. The file is read on this device and never leaves it.
Nothing has been sent anywhere. 0 requests to this site, for the page's own code.
mg/dL or mmol/L, and never guess
The United States reports glucose in mg/dL (a fasting value near ninety); most of the world reports mmol/L (the same value near five). That is an eighteenfold gap, and Apple records whichever the source device used, per sample, in the unit attribute. Assuming one unit for a glucose series is not an off-by-a-bit error — it is off by 18×, and for a number people make decisions on, reading the attribute rather than guessing is the whole game.
Continuous monitors and fingersticks arrive together
Glucose reaches Apple Health from two very different instruments. A continuous glucose monitor writes a reading every few minutes, day and night; a fingerstick meter writes a handful of sharp, deliberate points a day. In an export that has seen both, one identifier holds a dense CGM trace and a sparse manual series interleaved, each with its own sourceName. Averaging them together blurs a smooth interstitial trend into a few blood-drawn spikes; they are best read as separate lines, not one pooled cloud.
What you get from this page
This page extracts your glucose readings with their real units and sources, on your device, and keeps CGM and manual readings distinguishable rather than merging them. Nothing is uploaded, which for a measurement this sensitive is the entire reason to read it in the browser instead of a cloud dashboard.
This identifier is one of dozens. The Apple Health data dictionary lists every identifier this parser reads, with its canonical type and unit.