How Many Calories in Radishes? Nutrition Facts & Macros

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.

Yes, radishes are a nutrient-dense, low-calorie vegetable. Per 100 g they provide 14.8 mg of vitamin C (about 16% DV), 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.

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.

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 about 21 g in the same amount of potatoes. You can use roasted radishes in stews, alongside roasted meats, or even as a hash replacement.

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.

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.