However he eventually lost the title after Nepal's Chandra Bahadur Dangi, who measured 54.6 centimetres, was discovered and named the world's shortest mobile man.
Magar regained the title after Dangi's death in 2015.
"He was so tiny when he was born that he could fit in the palm of your hand, and it was very hard to bathe him because he was so small," said his father, Roop Bahadur, according to Guinness World Records.
As the world's shortest man the 27-year-old travelled to more than a dozen countries and made television appearances in Europe and the United States.
The record for shortest living mobile man is now retained by Edward "Nino" Hernandez of Colombia, a reggaeton DJ who stands 70.21 centimeters tall, Guinness said.