How heavy is a koala?

Koalas can weigh between 12 to 33 pounds (5.5 to 15 kg). Male koalas are generally larger than females. Female koalas are between 12 to 18 pounds (5.5 - 8.5 kg) and males Koalas can be between 17 and 33 pounds (7.7 - 15 kg).