Understanding your result
How much sugar is too much?
The NHS and WHO advise that free (added) sugars should be no more than ~30 g a day for adults — that's about 7 sugar cubes. The WHO's ideal target is even lower, around 5% of energy (~25 g). One teaspoon or cube is roughly 4 g.
Sugar cubes = grams of sugar ÷ 4
⚕️ Refers to free/added sugars, not the natural sugars in whole fruit, vegetables and milk. General guidance, not personal dietary advice.
Questions
How many grams of sugar per day is OK?
Adults: no more than about 30 g of free sugar daily (roughly 7 cubes). Children need less. Whole fruit and plain milk aren't counted.
How many grams in a sugar cube?
About 4 grams — the same as a level teaspoon.
Sources
Evidence-based · last reviewed July 2026