Skip to main content

Insulin Calculators & Apps

These web-based and mobile calculator apps are designed for simple calculations of insulin doses in the Canadian home and school setting.

Web apps

With this calculator, you can calculate the number of units of insulin to adjust a dose, based on the trend arrows of your CGMS (Dexcom G6®, Medtronic Enlite 2®/Guardian 3™, or FreeStyle Libre® 1 or 2) and your correction/sensitivity factor (ISF, in mmol/L or mg/dL). Alternatively, using your carb ratio (in grams), you can adjust your carbohydrate intake to offset the predicted rise or fall in blood glucose with time. These calculations are only to be used pre-meals and -snacks, and 3 hours or more hours after the previous insulin dose was given, to avoid insulin stacking. These calculations are not valid for use in children under the age of 2 years. Calculations do not account for active insulin/insulin-on-board, nor for activity! Based on Laffel LM et al. J Endocr Soc 2017;1(12):1461–1476.

 

With this calculator, you can generate a full insulin sliding scale for people on multiple daily injections, based on carb ratio (which must be between 4–60 grams), correction/sensitivity factor (ISF, which must be between 1–20 mmol/L or 18–360 mg/dL), and target blood glucose (the default is 6 mmol/L or 100 mg/dL). Insulin doses are rounded off (using a cut-off of 80%, not 50%) to the nearest half-unit. Calculations do not account for active insulin/insulin-on-board, nor for activity! You can export the resulting table to a CSV file, which can be opened in any spreadsheet program (Microsoft Excel, Google Sheets, Mac OS Numbers, etc.).

With this calculator, you can do a simple insulin bolus calculation for people on multiple daily injections, based on carbohydrate ratio (in grams), correction/sensitivity factor (ISF, in mmol/L or mg/dL), target blood glucose (the default is 6 mmol/L or 100 mg/dL), current measured blood glucose (in mmol/L or mg/dL), and carbs to be consumed (in grams). Insulin doses are rounded off to the nearest half-unit. Calculations do not account for active insulin/insulin-on-board, nor for activity! ‎

 

With this calculator, On this screen, you can create a simplified insulin sliding scale for people on a fixed amount of carbs at a meal, based on baseline insulin dose (the dose they get when their blood glucose is in target), correction/sensitivity factor (ISF, which must be between 1–20 mmol/L or 18–360 mg/dL), and target blood glucose (the default is 6 mmol/L or 100 mg/dL). By ticking the box for “Extra Carbs”, you can add/subtract carbs for variations from normal. Insulin doses are rounded off (using a cut-off of 80%, not 50%) to the nearest half-unit for ISF 2–20 mmol/L (36–360 mg/dL), and to the nearest unit for ISF 1–1.9 mmol/L (18–35 mg/dL). Calculations do not account for active insulin/insulin-on-board, nor for activity!

 

BolusCalc app for Android and iOS boluscalc.png

Our BolusCalc app is available on Android Play and on the App Store. This app is designed for simple calculations of insulin doses in the Canadian home and school setting (although calculations can also be done in U.S. mg/dL blood glucose units). There are 5 screens available: The Simple Insulin Bolus screen calculates an insulin dose for people on multiple daily injections (MDI) based on carb ratio, correction/sensitivity factor (ISF), target BG (the default is 6 mmol/L or 100 mg/dL for daytime, and 8 mmol/L or 120 mg/dL for bedtime), carbs to be consumed, and current BG. The Simple Insulin Scale screen generates a simplified insulin sliding scale for people who are on a fixed dose of carbs at a meal, based on baseline insulin dose, ISF, and target BG. The Full Sliding Scale screen generates a full insulin scale for people on MDI based on carb ratio, ISF, and target BG. The Correcting for Arrows screen allows CGMS users to calculate an increase or decrease in insulin dose (or carbs) to account for positive or negative direction arrows. The School Resources screen contains links to websites devoted to the care of Canadian children with diabetes in the school setting. For all screens, there is the ability to share a time-stamped copy of the data generated with a student’s parent or caregiver via text, e-mail or other phone app.

google-play-badge.png appstore.svg

SOURCE: Insulin Calculators & Apps ( )
Page printed: . Unofficial document if printed. Please refer to SOURCE for latest information.

Copyright © BC Children's Hospital. All Rights Reserved.

    Copyright © 2021 Provincial Health Services Authority.