How Much Sugar Should You Have Per Day? Limits Explained

In brief: how much sugar per day is healthy depends on whose guideline you follow. The NHS says adults should have no more than 30 g of free sugars a day, roughly 7 sugar cubes. The WHO and the Dietary Guidelines for Americans both set an upper limit of less than 10% of daily calories, about 50 g on a 2,000-calorie diet. The WHO adds that keeping it to 5% or less may bring extra benefits.

How Much Sugar Per Day: The Official Limits

The three main guidelines agree on the direction but use slightly different measures.

Guideline	What it limits	Daily limit for adults
NHS (UK)	Free sugars	No more than 5% of energy, which the NHS gives as 30 g
World Health Organization	Free sugars	Under 10% of energy, about 50 g at 2,000 kcal; 5% or less may give added benefit
Dietary Guidelines for Americans	Added sugars	Under 10% of calories, from age 2

The UK figure is the strictest because it is built on the 5% level. The WHO's 50 g is about 12 level teaspoons. None of these limits applies to sugars that occur naturally in whole fruit, vegetables or plain milk.

What Counts as Free or Added Sugar?

Free sugars are the ones worth cutting. They include:

• any sugar added to food or drink by a manufacturer, a cook or you at the table
• the sugar in honey, nectars and syrups (maple, golden, agave and the like)
• the sugar in fruit juices, vegetable juices and smoothies, even unsweetened ones

The sugar inside a whole apple or a glass of plain milk is not free sugar. Blending or juicing fruit releases its sugars, which is why juice counts but the whole fruit doesn't. US guidance talks about "added sugars" instead. The free-sugar definition used by the WHO and NHS goes a step further by also counting the natural sugar in juice.

Daily Sugar Limit in Grams for Your Calorie Intake

Percent limits translate into grams once you know your calorie intake. Sugar provides 4 calories per gram, so divide the calorie share by four.

Daily calories	10% limit (WHO, US)	5% level (NHS basis, WHO extra benefit)
1,600	40 g	20 g
2,000	50 g	25 g
2,400	60 g	30 g
2,800	70 g	35 g

If you don't know your number, our macro calculator estimates your daily calories and splits them into carbs, protein and fat. Sugar is part of the carb total, so it shares that budget with starchy foods.

How Much Sugar Per Day for Children (UK)

The NHS sets lower free-sugar limits for children, based on age.

Age	Maximum free sugars a day	About
1 year	10 g	2½ sugar cubes
2 to 3 years	14 g	3½ sugar cubes
4 to 6 years	19 g	5 sugar cubes
7 to 10 years	24 g	6 sugar cubes

Babies under 1 have no set limit, because they shouldn't be given added sugar at all. US guidance likewise advises avoiding added sugars before age 2.

A Worked Example: A Day of Free Sugar

Picture an adult who eats 2,000 calories a day. Say the labels on what they have show:

• breakfast: a 150 ml glass of orange juice with 13 g of sugar
• mid-morning: a flavored latte with 15 g of syrup sugar
• afternoon: a chocolate snack bar with 14 g of sugar

That's 13 + 15 + 14 = 42 g of free sugar. It sits under the WHO and US ceiling of 50 g, yet it's 12 g over the NHS limit of 30 g. The amounts are examples; real products vary, so check each label.

Swapping the latte syrup for none and the snack bar for a piece of whole fruit brings the total down to 13 g, all from the juice. The fruit adds natural sugar, but that doesn't count toward the limit.

How Much Sugar Per Day to Lose Weight?

No separate sugar limit exists for weight loss. The same daily limits apply. Too much sugar adds calories easily, and the NHS links that to weight gain, which raises the risk of heart disease, type 2 diabetes and some cancers. Cutting free sugar is one of the simplest ways to trim calories without eating less food overall. For the bigger picture, read our guide to healthy eating for weight loss.

Sugary Drinks and Healthier Swaps

Drinks are where much of the hidden sugar sits. A single can of regular cola can contain as much as nine sugar cubes, more than an adult's whole daily limit in UK advice. Healthier drink habits:

• Make water your main drink. Tea, coffee, lower-fat milk and low-sugar drinks all count toward your fluids too.
• Keep fruit juice and smoothies to one small glass (150 ml) a day, with a meal to protect your teeth.
• Replace sugary fizzy drinks with sugar-free or diet versions, no-added-sugar squash, or sparkling water with a slice of lemon.
• Dilute squash well, and drink caffeine in moderation. In pregnancy, the NHS advises no more than 200 mg of caffeine a day.

UK guidance suggests 6 to 8 glasses or cups of fluid daily, more in hot weather or after exercise, with pale yellow urine as the sign you're drinking enough. Our water intake calculator gives a personal estimate.

On sweeteners, the advice differs. The NHS lists sweeteners as one way to cut sugar in hot drinks. The WHO says lower sugar intake should be reached without non-sugar sweeteners.

Spotting Sugar on Labels

Look for "carbohydrate, of which sugars". On UK labels, more than 22.5 g per 100 g is high and 5 g or less is low. That figure includes natural sugars, so also check the ingredients list for sugar and its other names, such as glucose syrup, dextrose or fruit juice concentrate. Our guide on how to read food labels covers every line.

Limits and When to Get Advice

These limits are for healthy people. If you have diabetes, take medicines that affect blood sugar, or are planning a child's diet with special needs, ask your doctor or a registered dietitian for advice that fits you. Sugar is also a leading cause of tooth decay, so a dentist can advise on timing and frequency.

Frequently Asked Questions

Is 50 g of sugar a day too much?

For free or added sugars, 50 g is the upper limit the WHO and US guidelines allow on a 2,000-calorie diet, so it's at the ceiling rather than a target. UK advice is stricter at 30 g. If most of your 50 g comes from whole fruit and plain milk, it isn't free sugar and doesn't count toward these limits.

How much sugar per day is allowed in the UK?

The NHS advises adults to have no more than 30 g of free sugars a day, roughly seven sugar cubes. Children's limits are lower, from 10 g at age 1 to 24 g at ages 7 to 10. On food labels, the 90 g reference intake shown for total sugars includes the 30 g of free sugars.

Does sugar in fruit count toward the daily limit?

Not when the fruit is whole. Its sugars are held inside the structure of the fruit, so they aren't classed as free sugars. Once fruit is juiced, blended or puréed, the released sugars do count. That's why UK advice caps juice and smoothies at 150 ml a day, while whole fruit counts toward your 5 A Day.

How many teaspoons of sugar a day is healthy?

The WHO's 10% limit, 50 g on a 2,000-calorie diet, equals about 12 level teaspoons of free sugar. Its 5% level halves that to roughly six. The NHS limit of 30 g works out at about seven sugar cubes. Remember that most free sugar comes from foods and drinks, not the sugar bowl.

To see how sugar fits into your daily carb allowance, try the macro calculator.