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Watermelon nutrition: calories, sugar and vitamins

Watermelon is a fresh, whole fruit and, as a NOVA group 1 food, delivers naturally occurring energy and nutrients with no added sugar, salt or additives. It adds vitamins, minerals and fibre to your day. One portion counts as one of your five a day. Work out the numbers for any portion and age below, then see the full macro and micronutrient breakdown.

Watermelon nutrition calculator
Calories, sugar and key nutrients by portion, adjusted for age and gender.
Key nutrients in this portion

Watermelon nutrition per 100g and per portion

Typical valuesPer 100gPer portion (200g)
Energy3060
Fat0.15g0.3g
of which saturates0.02g0.04g
Carbohydrate7.5g15g
of which total sugars6.2g12.4g
of which added sugars0g0g
of which starch0g0g
Fibre0.4g0.8g
Protein0.6g1.2g
Salt0g0g

Sugar, fat, fibre and carbohydrate, by age

The tables below put each macronutrient against age-appropriate guidance, because what matters for a 4 year old is very different from an adult.

Sugar in Watermelon: natural, not added

1 wedge (about 200g) contains about 12.4g of sugar, and it is all natural (intrinsic) sugar that comes packaged with fibre and water. It has 0g of added or free sugar, so it does not count toward the daily free sugar limit the NHS sets. The table shows those limits by age; Watermelon contributes nothing to them.

Age groupDaily free sugar limitIn 1 wedge (about 200g)% of that
Adult30g0g
0%
Age 11 to 1730g0g
0%
Age 7 to 1024g0g
0%
Age 4 to 619g0g
0%

Fat in Watermelon: naturally very low

Watermelon is naturally very low in fat, with about 0.3g per portion and 0g of added fat. Only around 0.04g is saturated, well within the daily maximum for every age group.

Age groupMax saturated fatIn 1 wedge (about 200g)% of that
Adult24g0.04g
0%
Age 11 to 1727g0.04g
0%
Age 7 to 1022g0.04g
0%
Age 4 to 618g0.04g
0%

Fibre in Watermelon by age

Fibre supports healthy digestion, and most people in the UK do not get enough. A portion provides about 0.8g. Because children need less fibre than adults, that same portion covers a bigger share of a younger child's target.

Age groupRecommended fibreIn 1 wedge (about 200g)% of that
Adult30g0.8g
3%
Age 11 to 1725g0.8g
3%
Age 7 to 1020g0.8g
4%
Age 4 to 615g0.8g
5%

Carbohydrate in Watermelon by age

There is about 15.0g of carbohydrate per portion. There is no single daily target, but roughly half of daily energy should come from carbohydrate; the reference values below are based on that.

Age groupReference carbohydrateIn 1 wedge (about 200g)% of that
Adult250g15g
6%
Age 11 to 17275g15g
5%
Age 7 to 10225g15g
7%
Age 4 to 6188g15g
8%

Vitamins and minerals in Watermelon

Percentages are share of the daily Nutrient Reference Value (NRV). Under UK and EU rules a food is a source of a nutrient at 15% NRV per 100g and high in it at 30%.

NutrientPer 100g%NRV /100g%NRV /portion 
Vitamin C8.1mg10%20%-
Potassium112mg6%11%-
Vitamin A28ug4%7%-

Vitamins and minerals in Watermelon, by age

These tables show how the nutrients compare to daily needs across different ages, using UK Reference Nutrient Intakes (RNIs). This differs from the source of and high in labels above, which use the single adult figure (NRV) set for food packaging. Children's needs are lower, so a portion goes further.

Vitamin C in Watermelon by age

Vitamin C supports the immune system and helps the body absorb iron from food. 1 wedge (about 200g) contains 16mg. Because children need less than adults, that same portion covers a bigger share of a younger child's daily target.

Age groupDaily need (RNI)In 1 wedge (about 200g)% of daily need
Adult40mg16mg
40%
Age 11 to 1740mg16mg
40%
Age 7 to 1030mg16mg
54%
Age 4 to 630mg16mg
54%

Potassium in Watermelon by age

Potassium helps control blood pressure and supports normal muscle and nerve function. 1 wedge (about 200g) contains 224mg. Because children need less than adults, that same portion covers a bigger share of a younger child's daily target.

Age groupDaily need (RNI)In 1 wedge (about 200g)% of daily need
Adult3500mg224mg
6%
Age 11 to 173500mg224mg
6%
Age 7 to 102000mg224mg
11%
Age 4 to 61100mg224mg
20%

Vitamin A in Watermelon by age

Vitamin A supports vision, healthy skin and the immune system. 1 wedge (about 200g) contains 56ug. Because children need less than adults, that same portion covers a bigger share of a younger child's daily target.

Age groupDaily need (RNI)In 1 wedge (about 200g)% of daily need
Adult700ug56ug
8%
Age 11 to 17700ug56ug
8%
Age 7 to 10500ug56ug
11%
Age 4 to 6400ug56ug
14%

Is Watermelon processed?

No. Watermelon is a NOVA group 1 whole food, the least processed category, eaten in its natural state with nothing added. The sugars are intrinsic, packaged with fibre and water, which is why whole fruits behave very differently in the body from foods made with free sugars.

Watermelon nutrition FAQ

How many calories are in watermelon?

1 wedge (about 200g) has about 60 calories.

How much sugar is in watermelon?

1 wedge (about 200g) has about 12.4g of sugar, roughly 3.1 teaspoons, and none of it is added sugar.

Is watermelon good for you?

Yes. Watermelon is a whole food providing fibre and a range of vitamins and minerals. One portion counts as one of your five a day.

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Nutrition data from McCance and Widdowson and UK FoodData Central, per 100g raw edible portion; values are reference figures and can vary by variety and ripeness. Reference intakes: EU NRVs for labelling and UK RNIs (SACN) for age-based needs. For guidance only.