Free Tools
Free Diabetes Calculators
Free online calculators to help you manage blood sugar, understand your A1C, calculate insulin doses, assess insulin resistance, and track carbohydrates.
mg/dL ↔ mmol/L
Blood Sugar Converter
Instantly convert between mg/dL and mmol/L with ADA reference ranges.
Use ToolADA ADAG formula
A1C Calculator
Estimate A1C from average glucose or find average glucose for any A1C level.
Use Tool1800 Rule & correction dose
Insulin Correction Factor
Calculate your insulin sensitivity factor using the 1800 Rule.
Use Tool70+ foods, 9 categories
Carb Counter & GI Chart
Look up carb content and glycemic index for 70+ common foods.
Use ToolWHO classifications
BMI Calculator
Calculate your BMI and understand how weight affects your diabetes risk.
Use ToolInsulin resistance score
HOMA-IR Calculator
Assess insulin resistance from fasting glucose and insulin levels.
Use Tool500 & 450 Rule
Carb-to-Insulin Ratio
Find how many grams of carbs one unit of insulin covers.
Use ToolMedical disclaimer: These tools are for informational and educational purposes only and do not constitute medical advice. Always discuss your results with a qualified healthcare professional before making any changes to your treatment.