Insulin Pump Calculator

Basal rates and bolus from total daily dose.

Medical Disclaimer

This calculator is for informational and educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making decisions about your health. Never disregard professional medical advice or delay seeking it because of results from this tool.

Inputs

Total Daily Dose (units)

Meal Carbs (g)

Current Blood Glucose (mg/dL)

Target Blood Glucose (mg/dL)

Tab to move between fields

Results

Basal Rate (units/hr)

0.83

Insulin-to-Carb Ratio11.3

Insulin Sensitivity Factor (mg/dL)45

Meal Bolus (units)5.33

Correction Bolus (units)1.33

Total Bolus (units)6.67

How to Use This Calculator

Enter the patient's Total Daily Dose (units) from their current insulin regimen.
Input Meal Carbs (g), Current Blood Glucose (mg/dL), and Target Blood Glucose (mg/dL).
Review Basal Rate (units/hr), Insulin-to-Carb Ratio, and Insulin Sensitivity Factor.
Check Meal Bolus, Correction Bolus, and Total Bolus for the current meal.
Adjust these pump settings during clinical visits based on glucose pattern analysis.

How the result changes with Total Daily Dose (units)

Total Daily Dose (units)	Basal Rate (units/hr)
51	1.06
176	3.67
325	6.77
450	9.38

What each input means

Total Daily Dose (units): Total daily insulin dose (basal + bolus combined) in units.
Meal Carbs (g): Grams of carbohydrate in the upcoming meal.
Current Blood Glucose (mg/dL): Current blood glucose reading in mg/dL.
Target Blood Glucose (mg/dL): Desired target blood glucose level in mg/dL.

What each result means

Basal Rate (units/hr): Hourly basal insulin rate. Calculated as 50% of TDD divided by 24 hours.
Insulin-to-Carb Ratio: Grams of carbs covered by 1 unit of insulin (450 / TDD rule).
Insulin Sensitivity Factor (mg/dL): Expected BG drop per 1 unit of rapid insulin (1800 / TDD rule).
Meal Bolus (units): Insulin bolus to cover meal carbohydrates.
Correction Bolus (units): Additional insulin to correct elevated blood glucose above target.
Total Bolus (units): Combined meal + correction bolus.

How this is calculated

Worked example, using the default values

Identify Input Parameters
4 parameters
Total Daily Dose (units) = 40, Meal Carbs (g) = 60, Current Blood Glucose (mg/dL) = 180, Target Blood Glucose (mg/dL) = 120 = 4 input(s) provided
Calculate Basal Rate
Basal Rate = basalTotal / 24
0.83 = 0.83
Calculate Insulin-to-Carb Ratio
Insulin-to-Carb Ratio = 450 / tdd
11.3 = 11.3
Calculate Insulin Sensitivity Factor
Insulin Sensitivity Factor = 1800 / tdd
45 = 45