Calf Top is a Hewitt of 609.6 m in Westmorland and Furness. It clears the 2,000 ft line (609.6 m) by only 0 m.
All four of its nearest neighbours are higher, up to Whernside at 736.6 m. It is the lowest of the 11 register hills in the Central Pennines region, where Whernside is highest.