In terms of maximum land area controlled at the peak, British empire beats Mongol empire by roughly 10 million sq kilometers. While the British controlled 35.5 million sq km , the Mongols controlled 24 million sq km (at their peaks). read more
THE BRITISH Empire had far more colonies than the Mongol Empire, had far more people than the Mongol Empire(remember India and China, the two leading populations, but the Mongol Empire had even defeated the BRITISH. read more
Mongol Empire was the largest continuous empire that ever existed, but in terms of total landmass, the British Empire was larger at its peak. There is no consensus on exactly how large the Mongol Empire’s maximum territory was, because it is still a topic of debate on which year should be considered. read more
The term "empire" in this context (not necessarily a state ruled by an emperor) does not have a precise definition, but is generally applied to political entities that are considered to be especially large by the standards of their time and that have acquired a significant part of their territory by conquest. read more