On average, golden retrievers are slightly taller and heavier than black labs. Male golden retrievers typically weigh between 65 and 75 pounds and stand between 22 and 24 inches tall at the shoulder. Female golden retrievers typically weigh between 55 and 65 pounds and stand between 20 and 22 inches tall at the shoulder.
Male black labs typically weigh between 65 and 80 pounds and stand between 22 and 24 inches tall at the shoulder. Female black labs typically weigh between 55 and 70 pounds and stand between 21 and 23 inches tall at the shoulder.
Of course, there is some variation in size within both breeds, so it is possible to find golden retrievers that are smaller than black labs and black labs that are larger than golden retrievers. However, on average, golden retrievers are slightly taller and heavier than black labs.