What is the best estimate of the capacity of a kichten sink?

The capacity of a kitchen sink typically ranges from 1.5 to 2.5 gallons (5.7 to 9.5 liters) for standard single-basin sinks. Double-basin sinks may have a combined capacity of around 3 to 4 gallons (11.4 to 15.1 liters). However, the exact capacity can vary based on the sink's design and dimensions. Always check the manufacturer's specifications for precise measurements.