HealthFree

Sugar Intake Calculator

Calculate your daily added sugar limit in grams and teaspoons using WHO or American Heart Association guidelines for 2026. Most men should cap added sugar at 36 g (9 tsp) per day; most women and children at 25 g (6 tsp). The tool also computes the WHO 10% and 5% of total energy thresholds based on your daily calories.

Enter Values

Result

Enter values above and click Calculate to see your result.

AI Assistant

Ask about this calculator

I can help you understand the sugar intake calculator formula, interpret your results, and answer follow-up questions.

Try asking

Our AI assistant provides general estimates and advice only. Please consult a qualified healthcare professional before making any health-related decisions.

Formula

#
Core Formula
Max Sugar (g)=Daily Calories×% limit4\text{Max Sugar (g)} = \frac{\text{Daily Calories} \times \text{\% limit}}{4}

How it works: One gram of sugar provides 4 calories, so multiplying total calories by the percent limit and dividing by 4 gives grams. One level teaspoon of sugar weighs about 4.2 grams.

Worked Example

A woman eating 1,800 kcal/day under the WHO 10% rule:
1Step 1: Energy from sugar = 1,800 x 0.10 = 180 kcal.
2Step 2: Grams of sugar = 180 / 4 = 45 g/day.
3Step 3: In teaspoons = 45 / 4.2 = 10.7 tsp/day.
4Step 4: For stronger benefit, the WHO 5% rule halves this to 22.5 g (5.4 tsp). The AHA cap for women (25 g) sits between the two.

How Much Added Sugar You Should Eat Per Day

The American Heart Association sets a daily added sugar cap of 36 g (9 tsp) for men, 25 g (6 tsp) for women, and 25 g for children aged 2 to 18. Children under 2 should consume no added sugar at all.

The WHO offers two thresholds: a strong recommendation to keep free sugars under 10% of total energy, and a conditional recommendation of under 5% for additional health benefits, including reduced risk of dental caries and obesity.

Free sugars include white sugar, brown sugar, honey, maple syrup, agave, and the sugars naturally present in fruit juice. The natural sugars in whole fruit and unsweetened milk are NOT counted, because the fiber and protein matrix changes how the body absorbs them.

  • AHA limit for men: 36 g (9 tsp) of added sugar per day
  • AHA limit for women and children 2-18: 25 g (6 tsp) per day; zero for children under 2
  • WHO strong recommendation: less than 10% of total energy from free sugars
  • WHO conditional recommendation: less than 5% of total energy for stronger benefit
  • Top US sources: sugary drinks (24%), desserts and sweet snacks (19%), sweetened coffee and tea (11%)

Sugary drinks alone can blow past the daily limit in one serving: a 12 oz can of cola contains about 39 g of added sugar. Pair this calculator with the Carbs to Calories Calculator to track all carbohydrate sources.

You can also calculate changes using our Carbs to Calories Calculator, Diabetes Carb Calculator, Fiber Intake Calculator or Macro Calculator.

Frequently Asked Questions

How much sugar should I eat per day?

The American Heart Association recommends men cap added sugar at 36 g (9 tsp) per day and women and children aged 2-18 at 25 g (6 tsp). The WHO recommends less than 10% of total daily energy from free sugars, with an additional benefit threshold below 5%. Children under 2 should consume no added sugar.

How many teaspoons is 25 grams of sugar?

About 6 teaspoons. One level teaspoon of granulated sugar weighs roughly 4.2 g, so 25 g divides to 5.95 tsp. For comparison, a single 12 oz can of cola contains about 39 g (9.3 tsp), already over the daily AHA limit for women.

Does fruit count as added sugar?

No. The natural sugars in whole fruit are not counted as added or free sugars because fiber and water slow their absorption and they come packaged with vitamins and antioxidants. Fruit juices, dried fruit syrups, and fruit concentrates DO count as free sugars under the WHO definition.

What foods have hidden added sugar?

Common hidden sources include flavoured yogurt (10-25 g per cup), pasta sauce (6-12 g per half cup), barbecue sauce (6-13 g per 2 tbsp), granola and granola bars (8-15 g per serving), salad dressings (3-6 g per 2 tbsp), breakfast cereals (8-15 g per cup), and protein bars (15-25 g). Always check the "Added Sugars" line on the Nutrition Facts label.

Is honey or maple syrup better than sugar?

No, not from a free sugar standpoint. The WHO classifies honey, maple syrup, agave, and fruit juice concentrate as free sugars equivalent to white sugar. They count toward the same daily limit. Some contain trace minerals, but the volumes used in food provide negligible nutritional benefit relative to the sugar load.

What happens if I exceed the daily sugar limit?

Chronic excess added sugar is linked to weight gain, type 2 diabetes, fatty liver disease, dental caries, and cardiovascular disease. A 2014 JAMA study found adults consuming 25% or more of calories from added sugar had nearly triple the cardiovascular mortality risk vs those at less than 10%. Occasional excursions over the limit are not harmful in an otherwise balanced diet.

Can I embed this Sugar Intake Calculator on my website?

Yes. Click the "Embed" button at the top of this page to customize the size, colors, and theme, then copy the iframe code. Paste it into any HTML page, WordPress site, or CMS. It is completely free, requires no signup, and works on all devices. You can also visit our embed guide at calculory.com/services/embed-calculators for more details.

Medical Disclaimer

This calculator is provided for informational and educational purposes only. It is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making any decisions based on these results. Do not disregard or delay seeking medical advice because of information obtained from this tool.

Secure and Private

All calculations run locally. Your data never leaves your browser.

Verified Precision

Precise Calculations Powered by Calculory AI