A typical 1 medium serving of carrots contains 0.6 grams of protein (0.93 g per 100 g), which makes it only a minor source of protein. That covers roughly 1% of the 50 g reference Daily Value, so it adds toward your protein total for the day.
Only about 9% of the calories in carrots come from protein, so it is more of an energy food than a protein food. It is worth eating for other reasons; the protein it adds to a day is incidental.
Among the 105 vegetables in the database, carrots ranks 91st by protein per serving, and 765th out of all 796 foods on the site. Set against jalapeno peppers, another vegetable entry in the database, a serving carries about 0.5 g more protein (jalapeno peppers has 0.1 g per 1 pepper).
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 counted by piece at 61 g. Because pieces vary, the per-100 g figure is the one to use when comparing this against a food measured a different way.
Source: USDA FoodData Central #170393 - "Carrots, 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
Carrots protein FAQ
How much protein is in carrots per 100 g?
Carrots has 0.93 g of protein per 100 g. A typical 1 medium serving (61 g) provides 0.6 g.
Is carrots a complete protein?
No. Carrots 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 carrots cover?
A 1 medium serving of carrots contains 0.6 g of protein, about 1% of the 50 g reference Daily Value.
Is carrots a good source of protein?
Carrots is only a minor source of protein, and about 9% of its calories come from protein, which makes it more of an energy food than a protein food. Set against jalapeno peppers, another vegetable entry in the database, a serving carries about 0.5 g more protein (jalapeno peppers has 0.1 g per 1 pepper).