First, let's take a look at the macros. Each of these are listed in grams and as usual, normalized to 200 calories for easy comparison, so we're always comparing apples to apples.
| Watermelon | Cucumber |
| Nutrient | watermelon | cucumber |
| Protein | 4g | 9g |
| Carbohydrate | 50g | 48g |
| Fiber | 3g | 7g |
| Fat | 1g | 1g |
| Monounsat. Fat | 0g | 1g |
| Polyunsat. Fat | 0g | 0g |
| Saturated Fat | 0g | 0g |
Next, let's take a look at the Vitamin density. These values are shown in units of percent of recommended daily intake. And since we're showing 200 calories worth, this means anything above 10% is good.
| Nutrient | watermelon | cucumber |
| Choline | 6% | 19% |
| Vitamin A | 30% | 11% |
| Vitamin C | 72% | 50% |
| Vitamin E | 3% | 3% |
| Vitamin K | 1% | 273% |
Watermelon have significantly more Vitamins A, C than cucumber. Cucumber have significantly more Vitamins K than watermelon. Watermelon are a good source of Vitamin A, Thiamin, Pantothenic Acid, Vitamin B6, Potassium, Iron. Watermelon are a great source of Vitamin C. Cucumber are a good source of Thiamin, Zinc. Cucumber are a great source of Vitamin C, Riboflavin, Pantothenic Acid, Vitamin B6, Potassium, Magnesium, Calcium, Phosphorus, Iron. Cucumber are an excellent source of Vitamin K.
And here we see the B-vitamins: B1 (Thiamin), B2 (Riboflavin), B3 (Niacin), B5 (Pantothenic Acid), B6 (Pyridoxine)
| Nutrient | watermelon | cucumber |
| Vitamin B1 | 22% | 36% |
| Vitamin B2 | 13% | 40% |
| Vitamin B3 | 10% | 11% |
| Vitamin B5 | 30% | 69% |
| Vitamin B6 | 27% | 48% |
| Vitamin B12 | 0% | 0% |
Now, lets look at mineral density. Here we have a lot of important electrolytes and minerals. Once again, units are in percent of RDI, thus for this 200 calorie serving anything above 10% would considered high.
| Nutrient | watermelon | cucumber |
| Sodium | 0% | 2% |
| Potasium | 21% | 56% |
| Calcium | 9% | 43% |
| Magnesium | 19% | 50% |
| Phosphorus | 13% | 55% |
| Iron | 27% | 62% |
| Manganese | 11% | 46% |
| Selenium | 6% | 9% |
| Copper | 28% | 55% |
| Zinc | 7% | 28% |