Polar bears are also the largest species of bear. An adult male polar bear weighs around 775 to 1,200 lbs. (351 to 544 kilograms). The largest polar bear recorded weighed 2,209 pounds (1,000 kg), according to Polar Bear International. Females weigh half as much as their male counterparts, at only or 330 to 650 lbs. (50 to 295 kg).