One cup of cooked white rice (158g) has 205 calories, 4.3g of protein, and 45g of carbs, according to USDA FoodData Central. But that number means nothing if you don't know how much a cup actually is — and most people pour way more than one cup.
Here's the full breakdown based on USDA data, plus the real reason rice gets blamed for weight gain (spoiler: it's not the rice).