One cup of cooked quinoa contains 222 calories. That’s based on a 185-gram serving, which is roughly what you’d scoop onto a plate as a side dish. The number is nearly identical to brown rice (218 calories per cooked cup), but quinoa delivers significantly more protein and fiber per calorie.
Cooked vs. Dry: Why the Difference Matters
Quinoa expands to about three times its volume when cooked. One cup of dry quinoa yields roughly three cups cooked, so if you’re measuring from an uncooked bag, you’re looking at approximately 222 calories per third of what you started with. This trips people up when meal prepping. If a recipe calls for two cups of cooked quinoa, you only need about two-thirds of a cup dry.
Most nutrition labels on packaged quinoa list values for the dry grain, typically around a quarter-cup dry serving (about 170 calories). That quarter cup becomes roughly three-quarters of a cup once cooked. When tracking calories, always confirm whether a label or recipe refers to cooked or dry weight.
What Else Is in Those 222 Calories
Quinoa’s calorie count tells only part of the story. A single cooked cup also provides about 8 grams of protein and 5 grams of fiber. The protein content is notably high for a plant food, nearly double the 4 to 5 grams you’d get from the same amount of cooked brown or white rice. That fiber count covers roughly 18 to 20 percent of most adults’ daily target, which helps you feel full longer after eating.
Quinoa is also one of the few plant foods considered a complete protein, meaning it contains all nine essential amino acids your body can’t produce on its own. Most grains are missing or low in at least one, which is why beans and rice are traditionally paired together. Quinoa handles that job on its own, making it especially useful for vegetarian and vegan diets.
Mineral Content
Beyond protein and fiber, quinoa is unusually rich in minerals that many people fall short on. A cup of the dry grain contains roughly 357 milligrams of magnesium (a mineral involved in muscle function, sleep regulation, and blood sugar control), nearly 16 milligrams of iron, and about 5.6 milligrams of zinc. Those numbers drop proportionally once cooked and portioned, but even a standard serving contributes meaningful amounts toward daily needs, particularly for iron and magnesium.
How Quinoa Compares to Rice
Calorie for calorie, quinoa and brown rice are almost interchangeable: 222 versus 218 per cooked cup. The real differences show up elsewhere. Quinoa delivers roughly twice the protein, more fiber, and a broader mineral profile. It also has a low glycemic index, meaning it raises blood sugar more gradually than white rice (which is classified as high glycemic). Brown rice falls in the moderate range.
For people managing blood sugar or looking to increase protein without adding meat, quinoa has a clear edge. For those who simply want an affordable, neutral-tasting grain to round out a meal, brown rice is a perfectly reasonable choice at a lower price point. The calorie difference between them is negligible.
Portion Sizes in Practice
Most people serve quinoa as a side, using about half a cup to three-quarters of a cup cooked. That puts a typical portion somewhere between 111 and 167 calories. As a base for a grain bowl or salad, a full cup (222 calories) is standard. Because quinoa absorbs dressings, sauces, and oils readily, the toppings and mix-ins often contribute more calories than the grain itself.
If you’re cooking a batch for the week, one cup of dry quinoa (roughly 630 to 680 calories total) produces about three cups cooked, enough for four to six side portions. Cooked quinoa keeps well in the refrigerator for five to seven days, making it one of the easier grains to prep in advance.