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Watermelon vs Grapefruit - In-Depth Nutrition Comparison

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Comparison summary

Which food contains less Sugars?
Watermelon
Watermelon contains less Sugars (difference - 0.69g)
Which food is lower in Saturated Fat?
Watermelon
Watermelon is lower in Saturated Fat (difference - 0.005g)
Which food is cheaper?
Watermelon
Watermelon is cheaper (difference - $0.2)
Which food contains less Sodium?
Grapefruit
Grapefruit contains less Sodium (difference - 1mg)
Which food is lower in glycemic index?
Grapefruit
Grapefruit is lower in glycemic index (difference - 47)
Which food is richer in vitamins?
Grapefruit
Grapefruit is relatively richer in vitamins
Which food contains less Cholesterol?
?
The foods are relatively equal in Cholesterol (0 mg)
Which food is richer in minerals?
?
It cannot be definitely stated which food is richer in minerals. See charts below for detailed information.

Comparison summary table

Pay attention at the most right column. It shows the amounts side by side, making it easier to realize the amount of difference.
Watermelon Grapefruit
Lower in Sugars ok
Lower in Saturated Fat ok
Lower in price ok
Lower in Sodium ok
Lower in glycemic index ok
Rich in vitamins ok
Lower in Cholesterol Equal
Rich in minerals Equal

Which food is preferable in case of diets?

ok
ok
is better in case of low diet
Watermelon Grapefruit
Low Calories diet ok
Low Fats diet ok
Low Carbs diet ok
Low glycemic index diet ok

Vitamin and Mineral Summary Scores

Summary score is calculated by summing up the daily values contained in 300 grams of the product. Obviously the more the food fulfils human daily needs, the more the summary score is
Vitamin Summary Score
9
Watermelon
22
Grapefruit
Mineral Summary Score
4
Watermelon
5
Grapefruit

Mineral Comparison

Mineral comparison score is based on the number of minerals by which one or the other food is richer. The "coverage" chart below show how much of the daily needs can be covered by 300 grams of the food
:
Contains more Iron +200%
Contains more Magnesium +11.1%
Contains more Copper +31.3%
Contains more Zinc +42.9%
Contains more Calcium +214.3%
Contains more Potassium +20.5%
Contains more Phosphorus +63.6%
Contains less Sodium -100%
Equal in Magnesium - 9
Contains more Iron +200%
Contains more Magnesium +11.1%
Contains more Copper +31.3%
Contains more Zinc +42.9%
Contains more Calcium +214.3%
Contains more Potassium +20.5%
Contains more Phosphorus +63.6%
Contains less Sodium -100%
Equal in Magnesium - 9

Vitamin Comparison

Vitamin comparison score is based on the number of vitamins by which one or the other food is richer. The "coverage" chart below show how much of the daily needs can be covered by 300 grams of the food
:
Contains more Vitamin K +∞%
Contains more Vitamin C +285.2%
Contains more Vitamin A +102.1%
Contains more Vitamin E +160%
Contains more Vitamin B1 +30.3%
Contains more Vitamin B2 +47.6%
Contains more Vitamin B3 +14.6%
Contains more Vitamin B5 +18.6%
Contains more Vitamin B6 +17.8%
Contains more Vitamin K +∞%
Contains more Vitamin C +285.2%
Contains more Vitamin A +102.1%
Contains more Vitamin E +160%
Contains more Vitamin B1 +30.3%
Contains more Vitamin B2 +47.6%
Contains more Vitamin B3 +14.6%
Contains more Vitamin B5 +18.6%
Contains more Vitamin B6 +17.8%

Macronutrients Comparison

Macronutrient comparison charts compare the amount of protein, total fats and total carbohydrates in 300 grams of the food. The displayed values show how much of the daily needs can be covered by 300 grams of the food
Protein
4%
Watermelon
5%
Grapefruit
Carbohydrates
8%
Watermelon
11%
Grapefruit
Fats
1%
Watermelon
1%
Grapefruit

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All nutrients comparison - raw data values

In the column "Opinion" we made some assumptions which could be controversial. For instance we are assuming that less saturated fats is good for you. Please ignore this column if you have your own opinion.We marked the nutrients, comparison of which we considered as not meaningful, as "N/A"
Nutrient Watermelon Grapefruit Opinion
Calories 30 42 Grapefruit
Protein 0.61 0.77 Grapefruit
Fats 0.15 0.14 Watermelon
Vitamin C 8.1 31.2 Grapefruit
Carbs 7.55 10.66 Grapefruit
Cholesterol 0 0
Vitamin D 0 0
Iron 0.24 0.08 Watermelon
Calcium 7 22 Grapefruit
Potassium 112 135 Grapefruit
Magnesium 10 9 Watermelon
Sugars 6.2 6.89 Grapefruit
Fiber 0.4 1.6 Grapefruit
Copper 0.042 0.032 Watermelon
Zinc 0.1 0.07 Watermelon
Starch 0 0
Phosphorus 11 18 Grapefruit
Sodium 1 0 Grapefruit
Vitamin A 569 1150 Grapefruit
Vitamin E 0.05 0.13 Grapefruit
Vitamin D 0 0
Vitamin B1 0.033 0.043 Grapefruit
Vitamin B2 0.021 0.031 Grapefruit
Vitamin B3 0.178 0.204 Grapefruit
Vitamin B5 0.221 0.262 Grapefruit
Vitamin B6 0.045 0.053 Grapefruit
Vitamin B12 0 0
Vitamin K 0.1 0 Watermelon
Folic acid (B9) 0 0
Trans Fat 0 0
Saturated Fat 0.016 0.021 Watermelon
Monounsaturated Fat 0.037 0.02 Watermelon
Polyunsaturated fat 0.05 0.036 Watermelon
Tryptophan 0.007 0.008 Grapefruit
Threonine 0.027 0.013 Watermelon
Isoleucine 0.019 0.008 Watermelon
Leucine 0.018 0.015 Watermelon
Lysine 0.062 0.019 Watermelon
Methionine 0.006 0.007 Grapefruit
Phenylalanine 0.015 0.013 Watermelon
Valine 0.016 0.015 Watermelon
Histidine 0.006 0.008 Grapefruit
The main source of information is USDA Food Composition Database (U.S. Department of Agriculture)
Dietary Guidelines for Americans is used as the primary source for advice in this web resource
Data provided by FoodStruct.com should be considered and used as information only. Please consult your physician before beginning any diet.