Math error in Glycemic Load calculation + feature request

Create a new custom food.

Set weight per serving to 100. 1 servings. Serving size: gram.

Let’s say I have a Glycemic Index of 53 and total carbs of 9,56. GL=(GI*number of carbs)/100.

So it’s 5 (rounded down from 5,0668), set it on Glycemic Load value in the app.

Go to dairy log, add to Lunch/Dinner/Breakfast this new custom food, but change its servings to 857. And set its serving size to gram.

Carb Manager now shows that the food has 8192,9g of carbs.

But it shows a Glycemic Load amount of 4285.0, while if you open your calculator it has to be 4342.0 (rounded down from 4.342,237).


Math doesn’t agree with Carb Manager. Also I’d suggest to add a Glycemic Index value, so the app can automatically calculate the Glycemic Load through the carbs of the selected serving size (grams, liters, milliliters, etc.) and to the selected number of servings.


PS. I can’t see the amount of trans fats under food “Fats” list after I added it myself on my new custom food. Why?

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  • Lawrence
    Thanks for raising this. We were not able to replicate the error. Please contact our support team at if you're still having trouble.

    As for the feature request, we have added it to our list and it's now under

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