Sydney's Taronga Zoo is celebrating the birth of a male Asian elephant.

Elephant Pak Boon gave birth to the 130-kilogram calf on Friday morning following a pregnancy lasting almost two years.

An elephant calf takes its first steps into the enclosure with its mother and the rest of the herd at Taronga Zoo. Credit:Rick Stevens/Taronga Zoo

A zoo spokesman said the birth was relatively quick, lasting just over half an hour, with both mother and calf in good health.

AAP