How much protein is in quinoa?

Quinoa’s reputation rests on one genuinely unusual fact: it’s a complete protein. That phrase gets thrown around loosely, but here it’s earned — quinoa supplies all nine essential amino acids your body can’t make on its own, including lysine, the one most grains run short on. For a food you cook and serve like rice, that’s rare. It’s also a little bit of a technicality that quinoa is grouped with grains at all: botanically it’s a pseudocereal, the seed of a plant related to spinach and beets, not a true cereal grass. That seed origin is part of why it punches above the typical grain on protein and amino-acid balance.

How much protein you actually get

Here’s the honest framing. “Complete protein” describes the quality of quinoa’s protein, not the quantity — and the quantity is modest. Cooked quinoa is about 72% water, which works out to 4.4 g of protein per 100 g and roughly 8.1 g in a standard cooked cup (185 g). That’s a respectable number for a grain-style side, but it is not a protein powerhouse. A cooked cup gives you less protein than a single egg-and-a-half, alongside about 222 calories and a useful 5 g of fiber.

So the right way to think about quinoa isn’t “high-protein food.” It’s the best version of a starchy base — a complete-protein, higher-fiber, higher-protein platform you build a meal on, rather than the protein itself.

The cooked-vs-dry gotcha

This trips up almost everyone reading labels. Dry quinoa shows around 14 g of protein per 100 g — a number that makes it look like a serious protein source. But dry quinoa roughly triples in weight as it absorbs water during cooking. The protein doesn’t multiply or disappear; it just spreads across three times the mass, landing cooked quinoa back near 4.4 g per 100 g. The macro table on this page is for cooked quinoa, the way you actually eat it. Whenever you see a quinoa protein figure that looks unusually high, the first question to ask is whether it’s measured dry or cooked.

Where quinoa really earns its place

The strongest case for quinoa isn’t as a protein source at all — it’s as a swap for white rice. Cooked white rice carries about 2.7 g of protein per 100 g; quinoa delivers 4.4 g, roughly 60% more, plus several times the fiber and a complete amino-acid profile white rice simply doesn’t have. Calorie for calorie, that’s a clear upgrade for the same role on the plate. If you already eat rice as your default starch, switching to quinoa is one of the lower-effort ways to nudge a meal’s protein and fiber up at once.

To turn quinoa into a meal that actually moves the needle on protein, pair it with something concentrated: black beans or lentils for an all-plant plate, or tofu, eggs, chicken, or fish. A cup of quinoa plus a cup of beans, for example, climbs into a far more serious protein range than either alone. If you’re working toward a daily target, our protein-per-day guide helps you set the number, and quinoa is best treated as one supporting contributor toward it — never the whole answer.