2 liters of water is about the size of a half-gallon. It weighs 4.41 lb (2 kg) and fills a glass 5.27 in (13.4 cm) wide.

In kitchen measures
8.45 cups
406 tsp · 135 tbsp · 8.45 cups
about the size of a half-gallon
Water typically ranges 1–1 g/mL depending on how it's packed. A firmly packed scoop weighs more.