How Many Calories in Radishes? Nutrition Facts & Macros
A cup of sliced radishes (116 g) has 19 calories
Protein 0.8g · Carbs 3.9g · Fat 0.1g
Radishes are a crunchy, peppery root vegetable with just 16 kcal per 100 g and only 1.8 g of net carbs. They are a popular addition to salads and crudité platters, providing a sharp bite and vibrant color for essentially zero calories. Radishes are also a good source of vitamin C (14.8 mg per 100 g) and potassium (233 mg per 100 g). In the keto community, roasted radishes have gained popularity as a potato substitute — when roasted, they lose their peppery bite and develop a mild, tender texture similar to baby potatoes. Here is everything you need to know about radish calories and macros, based on USDA data. Radishes are approximately 95% water by weight.
67 kJ · per 100g · Water: 95.27 g
Calorie Calculator: Radish (Raw)
116 g Radish (Raw) contains 19 kcal
Calories by Portion Size
| Portion | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|
| 1 cup sliced (116 g) | 19 kcal | 0.8g | 3.9g | 0.1g |
| 1 medium radish (9 g) | 1 kcal | 0.1g | 0.3g | 0g |
| 100 grams | 16 kcal | 0.7g | 3.4g | 0.1g |
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Radish (Raw) — Nutrition Facts
| Radish (Raw) | per 100g |
|---|---|
| Calories | 16 kcal |
| Protein | 0.68 g |
| Fat | 0.1 g |
| Carbs | 3.4 g |
| Fiber | 1.6 g |
| Sugar | 1.86 g |
| Sodium | 39 mg |
| Potassium | 233 mg |
| Magnesium | 10 mg |
| Phosphorus | 20 mg |
| Vitamin C | 14.8 mg |
| Vitamin B6 | 0.071 mg |
| Folate | 25 mcg |
| Manganese | 0.069 mg |
| Water | 95.27 g |
Source: USDA FoodData Central (FDC ID: 169276) · Data verified April 2026
Variations
Raw (default)
16 kcal per 100 g. The classic form — peppery crunch, maximum vitamin C, and 95% water content. Best for salads, crudité platters, and as a snack with dips. The sharp, spicy bite mellows when sliced thin and dressed with a little salt or vinegar.
Roasted (with oil)
Approximately 40 kcal per 100 g. A popular keto potato substitute — roasting at 220 °C (425 °F) with olive oil and salt transforms radishes completely. They lose their sharp peppery bite and become mild, tender, and slightly sweet with a texture remarkably similar to roasted baby potatoes. Great in stews, as a side dish, or as a hash replacement.
Dietary Perspectives
For Weight Loss
Radishes are one of the lowest-calorie foods at just 16 kcal per 100 g. A full cup of sliced radishes (116 g) has only 19 kcal — less than a single tablespoon of olive oil. The peppery crunch adds texture and excitement to salads for essentially zero calories, and the 95% water content helps with hydration and volume. Use thinly sliced radishes as a chip substitute — dip them in hummus, guacamole, or tzatziki for a crunchy, satisfying snack. One medium radish (9 g) has less than 2 calories, making them ideal for unlimited snacking.
For Athletic Performance
Radishes are not a significant calorie or protein source for athletes at just 16 kcal and 0.68 g protein per 100 g. However, they provide a good amount of vitamin C (14.8 mg per 100 g) and potassium (233 mg per 100 g), which supports recovery and hydration. Use radishes as a crunchy, hydrating snack or salad addition between training sessions. The high potassium content helps maintain fluid balance, especially important during intense training blocks.
For Keto
Radishes are an excellent keto vegetable — only 1.8 g net carbs per 100 g (3.4 g total carbs minus 1.6 g fiber). A cup of sliced radishes (116 g) has just 2.1 g net carbs. The big keto trick: roasted radishes lose their peppery bite and develop a mild, potato-like texture and flavor. Roast at 220 °C (425 °F) with olive oil and salt for 20–25 minutes for a zero-guilt keto potato substitute. Whole roasted radishes can replace potatoes in stews and soups. Raw radishes sliced thin make an excellent low-carb chip alternative with dips.
Frequently Asked Questions
How many calories are in radishes?
One medium radish (9 g) has less than 2 calories. A cup of sliced radishes (116 g) contains approximately 19 calories. Per 100 g, raw radishes have 16 kcal — making them one of the lowest-calorie vegetables. For comparison, celery has 14 kcal, cucumber 15 kcal, and carrot 41 kcal per 100 g.
Are radishes healthy?
Yes, radishes are a nutrient-dense, low-calorie vegetable. Per 100 g they provide 14.8 mg of vitamin C (about 16% of the daily value), 233 mg of potassium, 25 mcg of folate, and 1.6 g of fiber. They are about 95% water, making them excellent for hydration. The peppery flavor comes from glucosinolates — sulfur-containing compounds that are also found in broccoli and cabbage and are linked to antioxidant properties.
How many carbs are in radishes?
Raw radishes have 3.4 g total carbs per 100 g, of which 1.6 g is fiber and 1.86 g is sugar. That gives about 1.8 g of net carbs per 100 g. A cup of sliced radishes (116 g) has approximately 3.9 g total carbs and 2.1 g net carbs. This makes radishes one of the lowest-carb vegetables available.
Are radishes a good keto potato substitute?
Roasted radishes are one of the best-kept secrets in keto cooking. When roasted at 220 °C (425 °F) with olive oil and salt for 20–25 minutes, radishes lose their sharp peppery flavor and become mild, tender, and slightly sweet — similar in texture to roasted baby potatoes. A cup of radishes has just 2.1 g net carbs vs 26 g in the same amount of potatoes. You can use roasted radishes in stews, alongside roasted meats, or even as a hash replacement.
Are radishes good for weight loss?
Radishes are an excellent weight loss food. At only 16 kcal per 100 g and 95% water content, they provide maximum crunch and volume for minimal calories. A full cup of sliced radishes (116 g) has just 19 kcal. Slice them thin and use as a chip substitute with hummus or dips. One medium radish (9 g) has less than 2 calories, making them ideal for virtually unlimited snacking.
Can you roast radishes?
Absolutely — roasting transforms radishes completely. The high heat caramelizes their natural sugars, eliminates the sharp peppery bite, and creates a mild, tender vegetable with a texture reminiscent of roasted potatoes. Halve or quarter the radishes, toss with olive oil, salt, and pepper, and roast at 220 °C (425 °F) for 20–25 minutes until golden. Roasted radishes have approximately 40 kcal per 100 g due to the added oil and water loss. They pair beautifully with roasted chicken, steak, or as a side dish on their own.
Compare with Similar Foods
| Portion | kcal | Protein | Carbs | Fat |
|---|---|---|---|---|
| Radish (Raw) | 16 | 0.68g | 3.4g | 0.1g |
| Carrot | 41 | 0.93g | 9.58g | 0.24g |
| Celery (Raw) | 14 | 0.69g | 2.97g | 0.17g |
| Cucumber | 15 | 0.65g | 3.63g | 0.11g |
| Potato | 86 | 1.71g | 20.01g | 0.1g |
per 100g
Per 100 g, raw radishes have 16 kcal with 0.68 g of protein, 0.1 g of fat, and 3.4 g of carbs (1.6 g fiber). They are comparable to celery (14 kcal) and cucumber (15 kcal), and dramatically lower than carrot (41 kcal) or potato (77 kcal).
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