Free diabetes tools
Converters, calculators and a printable log. They run in your browser, and nothing you type is sent anywhere.
Blood sugar converter
Convert blood glucose between mg/dL and mmol/L instantly. Free, private, with a reference table and the formula.
Free toolA1c converter
Convert A1c between percent (NGSP) and mmol/mol (IFCC) and see the estimated average glucose. Free, private, with formulas and sources.
Free toolAverage glucose calculator
Paste your glucose readings to see the average, highest, lowest, time below, in and above range, variability and GMI. Free and private, in your browser.
Free toolCarb calculator
Work out the carbohydrate and calories in the portion you ate from a nutrition label, per serving or per 100 g. Free and private, in your browser.
Free toolPrintable blood sugar log
A free printable weekly blood sugar log with columns for each time of day, insulin or medicines and notes. Print it or download the spreadsheet.