The weight of 1 liter of cat litter depends on the type and density of the cat litter. Different cat litter products have different densities and weights.

Generally speaking, the density of common cat litter is between 450 and 500 grams/liter. According to this density range, the weight of 1 liter of cat litter is roughly between 0.45 and 0.5 kilograms, that is, about 0.9 to 1 kilogram.

However, this is only a rough estimate. In reality, the weight of cat litter can vary depending on the type, brand, and production process. For example, some high-quality cat litter may be denser and weigh accordingly. Therefore, if you need more accurate weight information, it is recommended to directly check the label on the cat litter package, or to determine it by actual weighing.