carbohydrate content in common foods - authoritative source

[void]

Composition of foods integrated dataset (CoFID)

McCance and Widdowson’s 'composition of foods integrated dataset' on the nutrient content of the UK food supply.

www.gov.uk

very useful. Can hide the columns of the data you're not interested in, leaving two columns, one of the food, the other of carbs in grams.
Be sure to read the guide first.

 

[littlevoice359]

Agree. When I started working on a meal planner app for my own use I searched for a trustworthy source to initialise my database. This web page was hands-down the most accurate one I found.