Grapefruit vs. Kale
Nutrition comparison of Grapefruit and Kale
Ever wonder how your favorite foods stack up against each other in terms of nutrition?
We compared the nutritional contents of
grapefruit
versus
kale
(100g each)
below using 2020 USDA and NIH data[1].
For a quick recap of significant nutrients and differences in grapefruit and kale:
- Both kale and grapefruit are high in Vitamin C.
- Kale has 5.9 times less sugar than grapefruit.
- Kale has 59% less carbohydrates than grapefruit.
- Kale has more beta-carotene and lutein + zeaxanthin than grapefruit, however, grapefruit contains more lycopene than kale.
- Kale has more thiamin, riboflavin, niacin, Vitamin B6 and folate.
- Kale has signficantly more iron than grapefruit.
- Kale is an excellent source of Vitamin A, Vitamin K, calcium, dietary fiber and potassium.
USDA sources for nutritional information: Grapefruit (Grapefruit, raw, pink and red, all areas) and Kale (Kale, raw) . Have a correction or suggestions? Shoot us an email.
Calories and Carbs
calories
Kale and grapefruit contain similar amounts of calories - kale has 35 calories per 100 grams and grapefruit has 42 calories.
For macronutrient ratios, grapefruit is lighter in protein, much heavier in carbs and much lighter in fat compared to kale per calorie. Grapefruit has a macronutrient ratio of 7:91:2 and for kale, 27:41:32 for protein, carbohydrates and fat from calories.
Macro Ratios from Calories:
| Grapefruit | Kale | |
|---|---|---|
| Protein | 7% | 27% |
| Carbohydrates | 91% | 41% |
| Fat | 2% | 32% |
| Alcohol | ~ | ~ |
carbohydrates
Kale has 59% less carbohydrates than grapefruit - kale has 4.4g of total carbs per 100 grams and grapefruit has 10.7g of carbohydrates.
dietary fiber
Kale is an excellent source of dietary fiber and it has 156% more dietary fiber than grapefruit - kale has 4.1g of dietary fiber per 100 grams and grapefruit has 1.6g of dietary fiber.
sugar
Kale has 5.9 times less sugar than grapefruit - kale has 0.99g of sugar per 100 grams and grapefruit has 6.9g of sugar.
Protein
protein
Kale has 279% more protein than grapefruit - kale has 2.9g of protein per 100 grams and grapefruit has 0.77g of protein.
Fat
saturated fat
Both kale and grapefruit are low in saturated fat - kale has 0.18g of saturated fat per 100 grams and grapefruit has 0.02g of saturated fat.
Vitamins
Vitamin C
Both kale and grapefruit are high in Vitamin C. Kale has 199% more Vitamin C than grapefruit - kale has 93.4mg of Vitamin C per 100 grams and grapefruit has 31.2mg of Vitamin C.
Vitamin A
Kale is an excellent source of Vitamin A and it has 316% more Vitamin A than grapefruit - kale has 241ug of Vitamin A per 100 grams and grapefruit has 58ug of Vitamin A.
Vitamin E
Kale and grapefruit contain similar amounts of Vitamin E - kale has 0.66mg of Vitamin E per 100 grams and grapefruit has 0.13mg of Vitamin E.
Vitamin K
Kale is an excellent source of Vitamin K and it has more Vitamin K than grapefruit - kale has 389.6ug of Vitamin K per 100 grams and grapefruit does not contain significant amounts.
The B Vitamins
Kale has more thiamin, riboflavin, niacin, Vitamin B6 and folate. Both grapefruit and kale contain significant amounts of pantothenic acid.
| Grapefruit | Kale | |
|---|---|---|
| Thiamin | 0.043 MG | 0.113 MG |
| Riboflavin | 0.031 MG | 0.347 MG |
| Niacin | 0.204 MG | 1.18 MG |
| Pantothenic acid | 0.262 MG | 0.37 MG |
| Vitamin B6 | 0.053 MG | 0.147 MG |
| Folate | 13 UG | 62 UG |
Minerals
calcium
Kale is an excellent source of calcium and it has 10 times more calcium than grapefruit - kale has 254mg of calcium per 100 grams and grapefruit has 22mg of calcium.
iron
Kale has signficantly more iron than grapefruit - kale has 1.6mg of iron per 100 grams and grapefruit has 0.08mg of iron.
potassium
Kale is an excellent source of potassium and it has 158% more potassium than grapefruit - kale has 348mg of potassium per 100 grams and grapefruit has 135mg of potassium.
Antioxidants and Phytonutrients
flavonoids
Naturally occuring in fruits and vegetables, flavonoids are associated with many health benefits and used in a variety of medicinal and pharmaceutical applications. [2][3]
For specific flavonoid compounds, grapefruit has more luteolin than kale per 100 grams, however, kale contains more kaempferol, quercetin and isorhamnetin than grapefruit per 100 grams.
| Grapefruit | Kale | |
|---|---|---|
| luteolin | 0.6 mg | ~ |
| kaempferol | 0.01 mg | 46.8 mg |
| myricetin | 0.01 mg | ~ |
| Quercetin | 0.33 mg | 22.58 mg |
| isorhamnetin | ~ | 23.6 mg |
carotenoids
Carotenoids are micronutrients commonly found in plants and some animal products. An example is beta-carotene, the notable carotenoid which is a popular source of Vitamin A.[4][5]
For specific types of carotenoids, kale has more beta-carotene and lutein + zeaxanthin than grapefruit per 100 grams, however, grapefruit contains more lycopene than kale per 100 grams.
| Grapefruit | Kale | |
|---|---|---|
| beta-carotene | 686 UG | 2873 UG |
| alpha-carotene | 3 UG | ~ |
| lycopene | 1419 UG | ~ |
| lutein + zeaxanthin | 5 UG | 6261 UG |
Omega-3 and Omega-6
omega 3s
For omega-3 fatty acids, kale has more alpha linoleic acid (ALA) than grapefruit per 100 grams.
| Grapefruit | Kale | |
|---|---|---|
| alpha linoleic acid | 0.008 G | 0.378 G |
| Total | 0.008 G | 0.378 G |
omega 6s
Comparing omega-6 fatty acids, kale has more linoleic acid than grapefruit per 100 grams.
| Grapefruit | Kale | |
|---|---|---|
| linoleic acid | 0.029 G | 0.291 G |
| other omega 6 | ~ | 0.003 G |
| Total | 0.029 G | 0.294 G |
Customize your serving size
The comparison below is by weight, but sometimes 100g isn't that intuitive of a measurement for food. View a custom portion comparison (e.g. cups, oz, package).
You can try adding or subtracting the amount of either Grapefruit or Kale .
Note: The specific food items compared are: Grapefruit (Grapefruit, raw, pink and red, all areas) and Kale (Kale, raw) .
Grapefruit g
()
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Daily Values (%) |
Kale g
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5% | choline | 5% |
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5% | selenium | 5% |
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5% | zinc | 5% |
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| G | 5% | Water | 5% | G | |||
| G | 5% | Starch | 5% | G | |||
| G | 5% | Alcohol | 5% | G | |||
FAQ
Does kale or grapefruit contain more calories in 100 grams?Kale and grapefruit contain similar amounts of calories - kale has 35 calories in 100g and grapefruit has 42 calories.
Does kale or grapefruit have more carbohydrates?
By weight, kale has 60% fewer carbohydrates than grapefruit - kale has 4.4g of carbs for 100g and grapefruit has 10.7g of carbohydrates.
Does kale or grapefruit contain more calcium?
Kale is a rich source of calcium and it has 10 times more calcium than grapefruit - kale has 254mg of calcium in 100 grams and grapefruit has 22mg of calcium.
Does kale or grapefruit contain more potassium?
Kale is a rich source of potassium and it has 160% more potassium than grapefruit - kale has 348mg of potassium in 100 grams and grapefruit has 135mg of potassium.