A typical 1 cup serving of radish sprouts contains 1.4 grams of protein (3.81 g per 100 g), which makes it only a minor source of protein. That covers roughly 3% of the 50 g reference Daily Value, so it adds toward your protein total for the day.
Protein accounts for roughly 35% of the calories in radish sprouts, making it very protein-dense. The rest comes from fat and carbohydrate, so it adds a solid amount of protein while still carrying real energy - useful when you are eating to a calorie target rather than under one.
Among the 105 vegetables in the database, radish sprouts ranks 69th by protein per serving, and 697th out of all 796 foods on the site. Set against cabbage, another vegetable entry in the database, a serving carries about 0.5 g less protein (cabbage has 1.9 g per 1 cup cooked).
It is an incomplete protein on its own; pairing it with other plant foods across the day covers the full range of essential amino acids. The serving above is measured by volume at 38 g. The per-100 g figure lets you compare it directly against any other food here, whatever its serving.
Source: USDA FoodData Central #170095 - "Radish seeds, sprouted, raw" (SR Legacy, published 4/1/2019). Values are the published reference figures for that record, not lab measurements for a specific brand or batch.
Quick answers
Radish sprouts protein FAQ
How much protein is in radish sprouts per 100 g?
Radish sprouts has 3.81 g of protein per 100 g. A typical 1 cup serving (38 g) provides 1.4 g.
Is radish sprouts a complete protein?
No. Radish sprouts is an incomplete protein on its own; pairing it with other protein sources across the day covers the full range of essential amino acids.
How much of the Daily Value does a serving of radish sprouts cover?
A 1 cup serving of radish sprouts contains 1.4 g of protein, about 3% of the 50 g reference Daily Value.
Is radish sprouts a good source of protein?
Radish sprouts is only a minor source of protein, and about 35% of its calories come from protein, which makes it very protein-dense. Set against cabbage, another vegetable entry in the database, a serving carries about 0.5 g less protein (cabbage has 1.9 g per 1 cup cooked).