Daily Added Sugar Limit Calculator
Turn your daily calories into an added-sugar limit in grams and teaspoons using the 10%-of-calories guideline and the AHA caps.
How it works
grams = calories × limit% ÷ 100 ÷ 4 kcal/g · teaspoons = grams ÷ 4 g/tsp
Two limits circulate. The US Dietary Guidelines cap added sugar at under 10% of daily calories, which scales with intake, while the American Heart Association gives fixed daily caps of 25 g for women and 36 g for men. This tool converts your calorie level into grams and teaspoons so a nutrition label — which lists added sugar in grams — becomes easy to check. "Added" means sugar put in during processing or at the table, not the natural sugar in whole fruit or plain milk.
Worked example
On a 2000 kcal diet the 10% guideline allows 2000 × 0.10 = 200 kcal from added sugar, which is 200 ÷ 4 = 50 g, or about 12.5 teaspoons — while the stricter AHA cap for women is just 25 g.
Frequently asked questions
Does fruit count toward the sugar limit?
No. The limit applies to added sugars only. The natural sugar in whole fruit, vegetables and plain dairy is not counted and comes packaged with fiber and nutrients.
Why is the AHA limit lower than 10% of calories?
The AHA sets a tighter, fixed target focused on heart health. For many people 25–36 g is well under 10% of their calories, so it is a more conservative goal.
How do I spot added sugar on a label?
US Nutrition Facts panels list "Includes Xg Added Sugars" under total sugars. Watch for syrups, cane sugar, dextrose and concentrated juices high in the ingredient list.
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Educational estimate only — not medical or dietary advice. Nutrient reference values are population averages; your individual needs may differ with medical conditions, medications, pregnancy or activity. Talk to a doctor or registered dietitian before making changes.