What are the calories of Quinoa vs Rice?

When comparing typical 1 cup servings:
1 cup cooked quinoa (185g): 222 calories
1 cup cooked white rice (158g): 206 calories.
1 cup cooked brown rice (202g): 248 calories.
So, in a 1 cup serving, quinoa has slightly more calories than white rice, but fewer calories than an equal serving of brown rice.

However, quinoa is higher in protein and fiber, which can increase feelings of fullness compared to rice. Hence, you may end up eating a lesser quantity of quinoa than you would of rice due to this feeling of fullness.

In summary, Quinoa and rice have comparable calorie contents. But quinoa provides more satiating protein and fiber in those calories compared to normal white rice.