Glucose & HbA1c Calculator
Convert between estimated average glucose (eAG), HbA1c, and blood glucose in US (NGSP %, mg/dl) or UK (IFCC, mmol/L) units. Built on the ADAG 2008 formulas used by clinicians worldwide. Free on every platform — Android, iPhone, iPad, Windows, macOS, and Linux. No accounts, no data collection, no ads — everything stays on your device.
Calculate eAG or HbA1c as you type. No waiting, no network required.
US (NGSP %, mg/dl) and UK (IFCC mmol/mol, mmol/L) in one tap.
All computation on-device. No accounts, no data collection, nothing leaves your phone.
A comfortable theme for the clinic and the middle of the night.
Android, iOS, iPadOS, Linux, macOS, and Windows.
Standard estimated-average-glucose formulas used by clinicians.
Available for iPhone and iPad with native light and dark appearances — the same focused calculator and formulas you rely on.
On your device or on your computer, Glucocalc is free, with no ads and no tracking.