How Much Sugar Per Day Is Actually OK? WHO, AHA, and Your Real Number
How much sugar per day is OK? The World Health Organization caps free sugars at 50 grams and suggests 25 grams for extra benefit. The American Heart Association says 25 grams for women and 36 grams for men. The NHS sets 30 grams. All of these numbers mean added sugar, not the sugar in whole fruit or plain milk.
Here is the gap that matters. The average American sugar intake runs about 17 teaspoons of added sugar a day, which is roughly 68 grams. That is close to three times the WHO ideal, and it happens without anyone feeling like they ate a lot of sweets.
The Short Answer: How Much Sugar Per Day Each Guideline Allows
There is no single global number. There are five, and they sit close enough together to treat as one range. Pick the body that matches where you live.
| Guideline | Sugar per day | Teaspoons |
|---|---|---|
| WHO ideal (under 5% of calories) | 25 g | about 6 |
| WHO upper limit (under 10% of calories) | 50 g | about 12 |
| AHA, women | 25 g | 6 |
| AHA, men | 36 g | 9 |
| NHS, adults (free sugars) | 30 g | about 7.5 |
| FDA Daily Value on food labels | 50 g | about 12 |
The teaspoon math is easy. One teaspoon of sugar weighs about 4 grams, so you divide the grams by 4. A 25 gram limit is roughly six teaspoons a day from every source combined.
Notice how tight that range is. The strictest number is 25 grams and the loosest is 50 grams. If you land under 25 grams, every major health body agrees you are fine.
Added Sugar, Natural Sugar, and Free Sugars: The Definition That Changes Your Number
This is where most people go wrong. The limits above do not apply to all sugar. They apply to a subset, and that subset is defined differently on each side of the Atlantic.
Natural sugar in whole foods never counts
The sugar in a whole banana, a bowl of raspberries, or a glass of plain milk does not count toward any of these limits. The FDA states plainly that naturally occurring sugars in milk, fruits, and vegetables are not added sugars. Whole fruit arrives with fiber and water, which slows everything down.
The fruit sugar chart lists more than 50 fruits per serving and per 100 grams.
Added sugars: the American definition
The FDA counts sugars added during processing, table sugar, syrups, honey, and sugars from concentrated fruit or vegetable juices. That is the number printed on the Nutrition Facts label next to the word "Includes".
Free sugars: the WHO and NHS definition
WHO and the NHS use a wider term called free sugars. It covers everything the FDA counts, plus the sugars naturally present in honey, syrups, and unsweetened fruit juice and smoothies.
Here is the practical difference between free sugars vs added sugars. Pour a glass of pure orange juice with nothing added. A US label shows 0 grams of added sugars. WHO and the NHS count every gram of it against your 25 or 30 gram limit.
So a banana does not count, but the juice you make from four oranges does. That single rule changes a lot of people's daily total.
Where the Daily Sugar Intake Guidelines Actually Come From
These numbers are not blog folklore. The WHO sugar recommendations, the AHA limits, and the NHS figures each trace to a named document you can read.
- WHO, 2015. The guideline Sugars intake for adults and children makes a strong recommendation to keep free sugars under 10% of daily energy. It adds a conditional suggestion to go under 5%. The WHO healthy diet fact sheet puts that at 50 grams and 25 grams at 2,000 calories.
- American Heart Association. The AHA page How Much Sugar Is Too Much? sets 6 teaspoons (25 grams, 100 calories) for women and 9 teaspoons (36 grams, 150 calories) for men.
- NHS. The NHS page on sugar in our diet gives adults 30 grams of free sugars a day. Children get less: 24 grams at ages 7 to 10, 19 grams at ages 4 to 6, and 14 grams at ages 2 to 3.
- FDA. The added sugars label rules set a Daily Value of 50 grams, based on limiting added sugars to under 10% of a 2,000 calorie diet.
One thing has changed recently, and most articles have not caught up. The Dietary Guidelines for Americans, 2025 to 2030 dropped the old percentage cap for a blunter line. They state that no amount of added sugars is recommended, and that one meal should contain no more than 10 grams of added sugars.
That per meal rule is a useful sanity check. Three meals at 10 grams each lands you at 30 grams, right inside the WHO and NHS range.
What 25 to 36 Grams of Sugar Looks Like in Real Food
Grams mean nothing until you attach them to things you actually buy.
A standard 12 ounce can of regular cola holds about 39 grams of added sugar. That is the entire daily limit for a man, and more than a day and a half for a woman, in one drink you finish in five minutes.
Other common offenders are quieter:
- Flavored yogurt. A single pot often carries 10 to 20 grams once you subtract the milk sugar.
- Granola and breakfast cereal. Half a cup commonly runs 6 to 12 grams before you add milk or fruit.
- Ketchup and sauces. One tablespoon is roughly 4 grams, so a single teaspoon of sugar per squeeze.
- Coffee shop drinks. A flavored latte or a bottled iced tea can pass 30 grams on its own.
The NHS traffic light rule gives you a fast shortcut. More than 22.5 grams of total sugar per 100 grams is high. Five grams or less per 100 grams is low.
Drinks are usually the fastest place to find your excess, so start there with the sugar in drinks calculator. For packaged food, paste an ingredient list into the hidden sugar finder, which flags more than 70 alternative names for sugar. The sugar in food checker covers 120 plus common foods per serving.
Your Real Number: How to Personalize Your Added Sugar Daily Limit
The 25 and 36 gram figures assume an average adult eating about 2,000 calories. If you eat noticeably more or less than that, your real limit moves with you. Working it out takes three steps.
- Start with your daily calories. Use the rough figure you already know, or the one your doctor or a calorie calculator gave you.
- Take 5% for the ideal and 10% for the ceiling. These are the two WHO thresholds.
- Divide those calories by 4. Sugar carries about 4 calories per gram, so the division turns calories into grams.
Worked example at 2,000 calories. Five percent is 100 calories, and 100 divided by 4 is 25 grams. Ten percent is 200 calories, and 200 divided by 4 is 50 grams. That is exactly where the headline numbers come from.
Run the same math at other calorie levels and the limits shift:
- 1,600 calories: 20 grams ideal, 40 grams ceiling.
- 2,000 calories: 25 grams ideal, 50 grams ceiling.
- 2,400 calories: 30 grams ideal, 60 grams ceiling.
To go from grams to spoons, divide by 4 one more time. A 30 gram limit is about seven and a half teaspoons.
If you would rather not do arithmetic, the daily sugar intake calculator does all three steps and returns your limit in grams and teaspoons. Parents can get age based limits from the kids sugar intake calculator, since children's ceilings are much lower than adult ones. For quick label math, the sugar grams to teaspoons converter handles grams, teaspoons, cubes, and calories.
How to Tell If You Are Over Your Recommended Sugar Intake Per Day
Guessing does not work. Most people underestimate their intake badly, because the sugar is spread across ten small things rather than one obvious dessert.
Three habits close the gap:
- Read the added sugars line, not the total sugars line. On a US label, look for "Includes Xg Added Sugars". Total sugars include milk and fruit sugar, so that number will always look worse than it is.
- Use the percent Daily Value as a shortcut. The FDA rule of thumb is that 5% DV or less is a low source of added sugars and 20% DV or more is a high one. Since the Daily Value is 50 grams, 20% is 10 grams in a single serving.
- Scan the ingredient list. The Dietary Guidelines suggest looking for anything containing "sugar" or "syrup" or ending in "-ose". Sucrose, dextrose, maltose, agave syrup, and fruit juice concentrate all count.
Then track for three days. Not a month, just three ordinary days including one weekend day. The pattern shows up fast, and it is almost never where people expect.
A paper record works fine for three days. The printable sugar log gives you a sheet for the fridge, and the food label sugar decoder turns a confusing panel into plain numbers.
Frequently Asked Questions
Is 50 grams of sugar a day too much?
Fifty grams is the ceiling, not the target. WHO treats under 50 grams as the limit you should not cross, and separately suggests under 25 grams for additional benefit. The AHA sets a lower bar at 25 grams for women and 36 grams for men, so 50 grams is over the AHA line for everyone.
Does fruit count toward my daily sugar limit?
Whole fruit does not. The FDA, WHO, and NHS all exclude the sugar naturally present in whole fruit, vegetables, and plain milk. Fruit juice is the exception: WHO and the NHS count unsweetened juice and smoothies as free sugars, even though a US label lists them as zero added sugars.
How many teaspoons is 25 g of sugar?
About six teaspoons. One teaspoon of granulated sugar weighs roughly 4 grams, so you divide grams by 4. By the same math, 36 grams is about 9 teaspoons and 50 grams is about 12.
Is honey better than sugar for the daily limit?
Not under these guidelines. WHO and the NHS explicitly count honey and syrups as free sugars, and the FDA counts honey as an added sugar on labels. A tablespoon of honey lands roughly where a tablespoon of table sugar lands, so swapping one for the other does not buy you room.
What happens if I eat over the limit occasionally?
A single day above your limit is not the thing these guidelines are aimed at. All of them describe an average pattern over time, not a rule for one birthday party. The figure worth watching is your usual week, which is why three days of honest tracking beats worrying about any single meal.
Getting Your Own Number Instead of an Average One
The short version: aim for 25 grams of added sugar a day, treat 50 grams as the hard ceiling, and remember that whole fruit and plain milk are not in the count. Everything else is detail.
If you want your number rather than the average adult's, the daily sugar intake calculator turns your calorie level into a limit in grams and teaspoons in about ten seconds. Sugar Lens, an added sugar tracking app that estimates grams from a photo of your food, is currently in development for iOS. It is an awareness and tracking tool built on WHO and AHA guidance, not medical advice.