Diabetes Calculations

Here are a few useful tools for people using MDI or insulin pumps.

Grams of Carbohydrate per Unit Insulin Calculation

This form uses Pumping Insulin's 500/450 rule to calculate the grams of carbohydrate per unit insulin. This rule helps you calculate your insulin to carb ratio. As always, your experience may be different than what this formula calculates. Do not change your insulin dosage without first conferring with your physician.

Total Daily Insulin:

Type of Insulin Used: Humalog Regular

Result: Grams Carbohydrate per Unit Insulin:

Point Drop per Unit Insulin Calculation

This form uses Pumping Insulin's 1800/1500 rule to calculate the point drop per unit insulin. This rule, originally developed by Dr. Paul Davidson of Atlanta, helps you set up a personal sliding scale to safely lower high blood sugars. As always, your experience may be different than what this formula calculates. Do not change your insulin dosage without first conferring with your physician.

Total Daily Insulin:

Type of Insulin Used: Humalog Regular

Result: Point Drop per Unit Insulin:

Unused Insulin Rule Calculation

The unused insulin rule tells how many units of insulin are still in the system and working after a certain amount of time. Humalog uses 30% of the dose per hour. Regular uses 20%. This rule was also from Pumping Insulin. As always, your experience may be different than what this formula calculates. Do not change your insulin dosage without first conferring with your physician.

Amount of Insulin used:

Type of Insulin Used: Humalog Regular

How long ago the insulin was administered (in hours):

Result: Insulin still in system:

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