Insulin Calculator – Loan calculator

Insulin Bolus Dose Calculator

Current Blood Glucose (mg/dL):

Target Blood Glucose (mg/dL):

Carbohydrates to be Eaten (grams):

Insulin-to-Carb Ratio (grams/unit):

Insulin Sensitivity Factor (mg/dL/unit):

Disclaimer:

This Insulin Bolus Dose Calculator is for informational purposes only and should NOT be used as a substitute for professional medical advice, diagnosis, or treatment. Always consult with your healthcare provider or endocrinologist before making any decisions about your insulin dosage or diabetes management plan. Individual insulin needs vary greatly and are influenced by many factors not accounted for in this simple calculator.

function calculateInsulin() { var currentBG = parseFloat(document.getElementById("currentBloodGlucose").value); var targetBG = parseFloat(document.getElementById("targetBloodGlucose").value); var carbsEaten = parseFloat(document.getElementById("carbohydratesEaten").value); var insulinToCarbRatio = parseFloat(document.getElementById("insulinToCarbRatio").value); var insulinSensitivityFactor = parseFloat(document.getElementById("insulinSensitivityFactor").value); var resultDiv = document.getElementById("insulinResult"); if (isNaN(currentBG) || isNaN(targetBG) || isNaN(carbsEaten) || isNaN(insulinToCarbRatio) || isNaN(insulinSensitivityFactor) || currentBG <= 0 || targetBG <= 0 || carbsEaten < 0 || insulinToCarbRatio <= 0 || insulinSensitivityFactor <= 0) { resultDiv.innerHTML = "Please enter valid positive numbers for all fields. Carbohydrates can be zero."; return; } var correctionDose = 0; if (currentBG > targetBG) { correctionDose = (currentBG – targetBG) / insulinSensitivityFactor; } var carbDose = carbsEaten / insulinToCarbRatio; var totalInsulinDose = correctionDose + carbDose; resultDiv.innerHTML = "

Calculated Insulin Dose:

" + "Correction Dose: " + correctionDose.toFixed(1) + " units" + "Carbohydrate Dose: " + carbDose.toFixed(1) + " units" + "Total Bolus Insulin: " + totalInsulinDose.toFixed(1) + " units"; }

Understanding the Insulin Bolus Dose Calculator

Managing diabetes often involves calculating the correct insulin dose to match carbohydrate intake and correct high blood glucose levels. This Insulin Bolus Dose Calculator is designed to help individuals with diabetes estimate the amount of rapid-acting or short-acting insulin needed for a meal or to bring down elevated blood sugar.

How Insulin Bolus Dosing Works

A bolus dose of insulin is typically taken before meals to cover the carbohydrates consumed and to correct any high blood glucose (sugar) levels. It's a crucial part of intensive insulin therapy. The calculation usually involves two main components:

Carbohydrate Dose: This part of the bolus covers the carbohydrates you are about to eat. It's determined by your Insulin-to-Carb Ratio (ICR).
Correction Dose: This part of the bolus is used to lower your current high blood glucose level back to your target range. It's determined by your Insulin Sensitivity Factor (ISF), also known as the Correction Factor.

Inputs Explained

Current Blood Glucose (mg/dL): Your current blood sugar reading before eating or taking insulin. This is typically measured with a glucometer. (Note: If your readings are in mmol/L, you can convert to mg/dL by multiplying by 18).
Target Blood Glucose (mg/dL): Your desired blood glucose level before a meal or the level you aim to reach after a correction. This is set by your healthcare provider.
Carbohydrates to be Eaten (grams): The total amount of carbohydrates in the meal or snack you are about to consume. This requires careful food labeling reading or estimation.
Insulin-to-Carb Ratio (grams/unit): This is a personalized ratio that tells you how many grams of carbohydrates are covered by 1 unit of rapid-acting insulin. For example, an ICR of 10 means 1 unit of insulin covers 10 grams of carbs.
Insulin Sensitivity Factor (mg/dL/unit): Also known as the Correction Factor, this is a personalized factor that indicates how much 1 unit of rapid-acting insulin will lower your blood glucose level. For example, an ISF of 50 means 1 unit of insulin will lower your blood glucose by 50 mg/dL.

The Calculation Formula

The calculator uses the following formulas:

Correction Dose = (Current Blood Glucose – Target Blood Glucose) / Insulin Sensitivity Factor (If Current BG is already at or below Target BG, Correction Dose is 0).
Carbohydrate Dose = Carbohydrates to be Eaten / Insulin-to-Carb Ratio
Total Bolus Insulin = Correction Dose + Carbohydrate Dose

Example Calculation

Let's consider a realistic scenario:

Current Blood Glucose: 220 mg/dL
Target Blood Glucose: 100 mg/dL
Carbohydrates to be Eaten: 75 grams
Insulin-to-Carb Ratio: 15 grams/unit
Insulin Sensitivity Factor: 30 mg/dL/unit

Here's how the calculation would proceed:

Correction Dose: (220 mg/dL – 100 mg/dL) / 30 mg/dL/unit = 120 / 30 = 4 units
Carbohydrate Dose: 75 grams / 15 grams/unit = 5 units
Total Bolus Insulin: 4 units (correction) + 5 units (carbs) = 9 units

In this example, the estimated total bolus insulin dose would be 9 units.

Important Considerations

While this calculator provides a useful estimate, several factors can influence your actual insulin needs, including:

Physical activity levels
Stress or illness
Time of day
Hormonal changes
Type of food (fat and protein content)
Medications

Always work closely with your healthcare team to determine your individual insulin ratios and factors, and to adjust your doses as needed. This calculator is a tool to assist in understanding the principles of insulin dosing, not a replacement for professional medical guidance.