Added sugar calculator

Why the number on the label matters

Added sugar is the sugar you did not get from the fruit or the milk itself: it was put in during processing, cooking or at the table. Since the label began listing it in grams and as a percent of the Daily Value, you can finally add it up. The AHA says most adults take in more than they realize, and that people aged 2 and older get about 12 to 13 percent of their calories from it, double its recommended maximum of 6 percent. Sugary drinks are the largest single source: about 24 percent of added sugars, with desserts and sweet snacks at about 19 percent.

How many teaspoons are in a gram of sugar?

We use 4 grams per level teaspoon, so 25 g is 6.3 teaspoons and 36 g is 9 teaspoons, the American Heart Association's own pairs. The AHA page also says a 12-ounce soda has 10 teaspoons, which it gives as 42 grams (4.2 g per teaspoon), so the conversion is a rounded rule of thumb, not an exact one.

How many calories are in a gram of sugar?

Four, as on the AHA's added sugars page: 15 grams of sugar in a serving is 60 calories from the sugar. So 25 g is 100 calories and 36 g is 144.

What is the daily limit for added sugar?

The AHA recommends no more than 25 grams (6 teaspoons, 100 calories) for most women and 36 grams (9 teaspoons, 150 calories) for most men, which it expresses as no more than 6% of calories. For children 2 to 18 the AHA statement says 25 grams or less, and none under age 2. The Dietary Guidelines for Americans 2025–2030, released in January 2026, say no amount of added sugars is recommended and that one meal should contain no more than 10 grams. The Nutrition Facts Daily Value is 50 grams.

Did the Dietary Guidelines change the 10 percent rule?

Yes. The 2020–2025 edition said to limit added sugars to less than 10 percent of calories from age 2. The 2025–2030 edition replaces it with a stricter message: avoid highly processed foods and sugar-sweetened drinks, no amount of added sugars is recommended, and one meal should have no more than 10 grams. The calculator still shows the older percent figure if you enter your calories, because many articles and old labels cite it.

What counts as an added sugar?

Sugars and syrups put in foods during preparation or processing, or at the table (AHA). That includes honey, maple syrup, agave, corn syrup, concentrated fruit juice and the many names that end in -ose. The Dietary Guidelines say the sugars in fruit and plain milk are naturally occurring and are not counted as added. On the Nutrition Facts label look for the Added Sugars line under Total Sugars.

Are the limits the same for everyone?

No. The AHA limits differ by sex and age and are for people without a medical reason for a different plan. People with diabetes, children with special needs and people who are pregnant should follow the plan their clinician gives them. This page compares your intake with published general advice and does not diagnose or treat anything.

How the calculation works

For each item the calculator multiplies the grams per serving by the servings you had and adds them up. It then divides by four to get teaspoons, multiplies by four to get calories, and divides by the limit for the group you chose. If you enter your daily calories it also shows what 6 percent of them (the AHA share) and 10 percent of them (the older Dietary Guidelines share) come to in grams: percent of calories ÷ 4 calories per gram. Nothing you enter is sent anywhere; the page stores your list only in your own browser.

Worked example

Take a 12-ounce regular soda (42 g, the AHA's figure), a flavored yogurt with 12 g of added sugars and a bowl of cereal with 10 g. The day's total is 64 g, which is 16 teaspoons and 256 calories. Against the women's AHA limit of 25 g that is 256 percent; against the men's limit of 36 g it is 178 percent, and against the child limit of 25 g it is 256 percent. It is 128 percent of the 50 g Daily Value. For someone eating 2,000 calories, 6 percent of calories is 30 g and the older 10 percent figure is 50 g. The soda alone is 168 percent of the women's limit. The AHA's own text rounds the soda to 10 teaspoons and 160 calories; our 4-grams-per-teaspoon rule gives 10.5 and 168, a difference caused by rounding.

Common mistakes

• Reading Total Sugars instead of Added Sugars. Total sugars include lactose in milk and sugar in fruit. Only the Added Sugars line goes into this calculator.
• Forgetting the serving size. The label gives grams per serving, and a bottle often holds more than one. Enter the number of servings you drank or ate.
• Treating honey, maple syrup or juice concentrate as healthier. The AHA says added sugar is added sugar no matter what it is called, and the FDA counts syrups, honey and concentrated juices in the definition.
• Treating the limits as targets. The Dietary Guidelines 2025–2030 say no amount of added sugars is recommended; the AHA figures are ceilings, not a daily allowance to be used up.
• Mixing the guides. The AHA limits, the Dietary Guidelines and the Daily Value answer different questions and sit at different places: 25 or 36 g, 10 g per meal and 50 g. The table shows each side by side.

Sources and related calculators

Sources, read October 28, 2026: American Heart Association, “How Much Sugar Is Too Much?” (reviewed May 2026) and “Added Sugars” (6% of calories, 4 calories per gram, label reading); R. K. Johnson et al., Circulation 2009;120:1011–1020; M. B. Vos et al., Circulation 2017;135:e1017–e1034 (children; checked through the AHA text and press summaries, the article itself was not opened); Dietary Guidelines for Americans, 2025–2030 (January 2026), cdn.realfood.gov/DGA.pdf; 21 CFR 101.9(c)(9) (Daily Value of 50 g; 25 g for ages 1 to 3). The earlier 10% figure is from the 2020–2025 edition, read only in press summaries. This page is not endorsed by or affiliated with the AHA, USDA or FDA. Related: calorie calculator, macro calculator, sodium intake calculator and glycemic load calculator.

For general information only — not medical advice. Talk with your doctor or another health professional about your own health. How we check our calculators.