Work out glycaemic load instantly with clear inputs, formula shown and shareable results.
Multiplies glycaemic index by available carbohydrate per serving and divides by 100, which scales the index by the amount actually eaten.
Glycaemic load
GL = glycaemic index x available carbohydrate per serving / 100; low is 10 or below, medium 11 to 19 and high 20 or more
Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
Watermelon has a high index but so little carbohydrate per serving that its load is low.
Around 100 is a common average; below 80 is generally considered a low glycaemic load diet.