Sugar Content Calculator

Nutrition labels in most of the world report sugar content per 100 grams as a standardized reference amount, which lets you compare two different products on equal footing even if their listed serving sizes differ. This calculator asks for that per-100g figure plus your actual serving size so it can scale the number to what you're really eating -- if you only entered a manufacturer's stated serving-size sugar figure, you couldn't adjust for eating a different portion than the label assumes.

4.2 grams per teaspoon is the standard approximation for granulated white table sugar and is widely used by nutrition resources to translate gram figures into a more intuitive kitchen measurement. Other sugar forms -- brown sugar, powdered sugar, honey, or syrups -- pack differently by volume and would convert at a somewhat different gram-per-teaspoon rate, so this conversion is most accurate for granulated sugar specifically and approximate for other sweeteners.

The World Health Organization's guidance is expressed as a share of total energy intake -- under 10% as a baseline, under 5% for additional benefit -- rather than a fixed gram number, because sugar tolerance scales with how much you eat overall. This calculator's default of 25g is that 5% target translated for a standard 2,000-calorie reference diet; if your own calorie needs are meaningfully higher or lower, adjust the Daily Sugar Limit field to match your own energy intake rather than relying on the 2,000-calorie default.

No -- raising the Daily Sugar Limit only changes the percentage this calculator reports, not the actual sugar content of the food itself, which is determined entirely by the Serving Size and Sugar Per 100g fields. Setting a higher personal limit (for example, switching from the WHO-based 25g default to the AHA's roughly 36g figure commonly cited for men) simply means the same serving registers as a smaller percentage of your chosen daily budget, not that the food changed.