Diabetes Calculators & Tools
Clinical calculations for insulin adjustments. Note: These tools provide estimates based on standard formulas. Always consult your endocrinologist before changing pump settings.
A1C to eAG Converter
Convert HbA1c percentage to Estimated Average Glucose (eAG).
Insulin Sensitivity Factor (1800 Rule)
Estimate how much 1 unit of rapid-acting insulin will drop your glucose.
Insulin to Carb Ratio (500 Rule)
Estimate how many grams of carbs are covered by 1 unit of insulin.
Basal/Bolus Split Analyzer
Check your insulin distribution. A typical split is roughly 50/50.
Active Insulin (IOB) Estimator
A simplified linear estimate of how much insulin remains active after a bolus. (Note: True insulin decay curves are non-linear).
CGM Cost Calculator (Out of Pocket)
Estimate un-insured or cash-pay costs for sensors.
Infusion Set / Pod Cost Calculator
Estimate ongoing supply costs for your insulin pump.
TIR Goal Setter
Convert TIR percentages into hours per day.
Meal Bolus Estimator
Standard meal bolus calculation (Carbs ÷ Ratio).
Correction Bolus Estimator
Calculate insulin needed to bring high blood sugar back to target range.
Sensor Warmup Schedule
Quick reference for CGM warmup times when changing devices.
| Device | Warmup Time | Grace Period |
|---|---|---|
| Dexcom G7 | 30 Minutes | Yes (12 hours) |
| FreeStyle Libre 3 | 60 Minutes | No |
| Dexcom G6 | 2 Hours | No |
| Eversense E3 | 24 Hours | N/A (Implanted) |